Stainless Steel Key Stock Bars

Cut this square or rectangular key stock to length to create a straight machine key. Straight keys are the most common type of key. Machine keys are often the same material as the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.

18-8 Stainless Steel

18-8 stainless steel key stock offers a balance of strength and corrosion resistance. It may be mildly magnetic. 18-8 stainless steel key stock is more corrosion resistant than steel key stock.

Oversized Tolerance—Slightly larger than the size listed in the table, oversized stock fits tightly in a keyway. Press it into place for use in high-torque applications or to replace a key in a worn keyway.

Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.

DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.

			Tolerance
	Ht. × Wd.	Tolerance Rating	Ht.	Wd.	Min. Hardness	Specs. Met		Each
12" Long



		1/8" × 1/8"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A100	00000


		1/8" × 1/8"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	92530A100	0000
		5/32" × 5/32"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	92530A311	0000
		5/32" × 5/32"	Standard	-0.002" to 0.001"	-0.002" to 0.001"	Rockwell B82	—	92530A105	0000
		3/16" × 3/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A117	0000
		3/16" × 3/16"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	92530A117	0000
		3/16" × 1/4"	Standard	-0.002" to 0.002"	-0.005" to 0.005"	Rockwell B82	—	92530A110	0000
		3/16" × 1/2"	Standard	-0.008" to 0.008"	-0.015" to 0.015"	Rockwell B80	—	92530A118	00000
		1/4" × 1/4"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A136	0000
		1/4" × 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	92530A136	0000
		1/4" × 1/2"	Standard	-0.008" to 0.008"	-0.015" to 0.015"	Rockwell B80	—	92530A137	00000


		5/16" × 5/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A150	0000
		5/16" × 5/16"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B82	—	92530A150	0000
		3/8" × 3/8"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A165	00000
		3/8" × 3/8"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B82	—	92530A165	00000
		3/8" × 1/2"	Standard	-0.008" to 0.008"	-0.015" to 0.015"	Rockwell B80	—	92530A166	00000
		3/8" × 3/4"	Standard	-0.008" to 0.008"	-0.015" to 0.015"	Rockwell B80	—	92530A167	00000
		7/16" × 7/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A179	00000
		7/16" × 7/16"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B82	—	92530A179	00000
		1/2" × 1/2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A187	00000
		1/2" × 1/2"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A187	00000


		1/2" × 3/4"	Standard	-0.008" to 0.008"	-0.015" to 0.015"	Rockwell B80	—	92530A180	00000
		9/16" × 9/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	98493A188	00000
		9/16" × 9/16"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A188	00000
		5/8" × 5/8"	Oversized	0.000" to 0.005"	0.000" to 0.005"	Rockwell B82	—	98493A206	00000
		5/8" × 5/8"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A206	00000
		5/8" × 3/4"	Standard	-0.015" to 0.015"	-0.015" to 0.015"	Rockwell B80	—	92530A207	00000
		5/8" × 1"	Standard	-0.015" to 0.015"	-0.015" to 0.015"	Rockwell B80	—	92530A208	00000
		3/4" × 3/4"	Oversized	0.000" to 0.005"	0.000" to 0.005"	Rockwell B82	—	98493A226	00000
		3/4" × 3/4"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A226	00000
		3/4" × 1"	Standard	-0.015" to 0.015"	-0.015" to 0.015"	Rockwell B80	—	92530A227	000000


		7/8" × 7/8"	Oversized	0.000" to 0.005"	0.000" to 0.005"	Rockwell B82	—	98493A245	00000
		7/8" × 7/8"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A245	00000
		1" × 1"	Oversized	0.000" to 0.005"	0.000" to 0.005"	Rockwell B82	—	98493A257	00000
		1" × 1"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A257	00000
		1 1/4" × 1 1/4"	Oversized	0.000" to 0.006"	0.000" to 0.006"	Rockwell B82	—	98493A830	000000
		1 1/4" × 1 1/4"	Undersized	-0.006" to 0.000"	-0.006" to 0.000"	Rockwell B82	—	92530A260	00000
		1 1/2" × 1 1/2"	Undersized	-0.006" to 0.000"	-0.006" to 0.000"	Rockwell B82	—	92530A265	000000
		1 3/4" × 1 3/4"	Undersized	-0.006" to 0.000"	-0.006" to 0.000"	Rockwell B82	—	92530A270	000000
		2" × 2"	Undersized	-0.006" to 0.000"	-0.006" to 0.000"	Rockwell B82	—	92530A275	000000


		36" Long



				1/8" × 1/8"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	92530A312	0000


				3/16" × 3/16"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	92530A313	00000
				1/4" × 1/4"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	92530A314	00000
				1/4" × 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	92530A315	00000
				5/16" × 5/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	92530A316	00000
5/16" × 5/16"				Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B82	—	92530A317	00000
3/8" × 3/8"	Oversized			0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	92530A318	00000
3/8" × 3/8"	Undersized			-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B82	—	92530A319	00000
1/2" × 1/2"	Oversized			0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	92530A321	00000
1/2" × 1/2"	Undersized			-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A322	00000
5/8" × 5/8"	Oversized			0.000" to 0.005"	0.000" to 0.005"	Rockwell B82	—	92530A323	00000


5/8" × 5/8"	Undersized			-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B82	—	92530A324	00000


305 mm Long



				3 mm × 3 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	—	98810A169	00000


				3 mm × 3 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6880	90457A410	0000
				4 mm × 4 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A100	0000
				4 mm × 4 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6880	90457A420	0000
				5 mm × 5 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A110	0000
				5 mm × 5 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6880	90457A430	0000
				6 mm × 6 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A120	00000
				6 mm × 6 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6880	90457A440	00000
				7 mm × 7 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A130	00000
				7 mm × 7 mm	Undersized	-0.090 mm to 0.000 mm	-0.090 mm to 0.000 mm	Rockwell B82	DIN 178	98810A812	00000
				7 mm × 8 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 174	98810A140	00000


				8 mm × 8 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A150	00000
				8 mm × 8 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6880	90457A460	00000
				8 mm × 10 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 174	98810A152	00000
				8 mm × 12 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A155	00000
				9 mm × 14 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 174	98810A160	00000
				10 mm × 10 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A170	00000
				10 mm × 10 mm	Undersized	-0.090 mm to 0.000 mm	-0.090 mm to 0.000 mm	Rockwell B82	DIN 178	98810A332	00000
				12 mm × 12 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A180	00000
				14 mm × 14 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A200	00000
				16 mm × 16 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A210	00000


				18 mm × 18 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A220	00000
				20 mm × 20 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A230	000000
				22 mm × 22 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A240	000000
				24 mm × 24 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Rockwell B82	DIN 178	98810A250	000000

304 Stainless Steel

304 stainless steel key stock offers a good balance of strength, corrosion resistance, and machinability. 304 stainless steel key stock is more corrosion resistant than steel key stock.

DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.

			Tolerance, mm
	Ht. × Wd.	Tolerance Rating	Ht.	Wd.	Min. Hardness	Specs. Met		Each
305 mm Long



		2 mm × 2 mm	Undersized	-0.025 to 0.000	-0.025 to 0.000	Rockwell B80	DIN 6880	92288A601	000000


		4 mm × 6 mm	Undersized	-0.075 to 0.000	-0.030 to 0.000	Rockwell B80	DIN 6880	92288A602	00000
		6 mm × 10 mm	Undersized	-0.030 to 0.000	-0.036 to 0.000	Rockwell B80	DIN 6880	92288A603	00000
		7 mm × 8 mm	Undersized	-0.090 to 0.000	-0.036 to 0.000	Rockwell B80	DIN 6880	92288A604	00000
		8 mm × 10 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B80	DIN 6880	92288A605	00000
		8 mm × 12 mm	Undersized	-0.036 to 0.000	-0.043 to 0.000	Rockwell B80	DIN 6880	92288A606	00000
		9 mm × 14 mm	Undersized	-0.090 to 0.000	-0.043 to 0.000	Rockwell B80	DIN 6880	92288A607	00000


		1,000 mm Long



				2 mm × 2 mm	Undersized	-0.025 to 0.000	-0.025 to 0.000	Rockwell B80	DIN 6880	92288A608	00000


				3 mm × 5 mm	Undersized	-0.060 to 0.000	-0.030 to 0.000	Rockwell B80	DIN 6880	92288A614	00000
				4 mm × 4 mm	Undersized	-0.030 to 0.000	-0.030 to 0.000	Rockwell B80	DIN 6880	92288A615	00000
				4 mm × 6 mm	Undersized	-0.075 to 0.000	-0.030 to 0.000	Rockwell B80	DIN 6880	92288A609	00000
				5 mm × 5 mm	Undersized	-0.030 to 0.000	-0.030 to 0.000	Rockwell B80	DIN 6880	92288A616	00000
				6 mm × 6 mm	Undersized	-0.030 to 0.000	-0.030 to 0.000	Rockwell B80	DIN 6880	92288A617	00000
				7 mm × 8 mm	Undersized	-0.090 to 0.000	-0.036 to 0.000	Rockwell B80	DIN 6880	92288A610	00000
				8 mm × 8 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B80	DIN 6880	92288A618	00000
				8 mm × 10 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B80	DIN 6880	92288A611	00000
				8 mm × 12 mm	Undersized	-0.036 to 0.000	-0.043 to 0.000	Rockwell B80	DIN 6880	92288A612	00000
				9 mm × 14 mm	Undersized	-0.090 to 0.000	-0.043 to 0.000	Rockwell B80	DIN 6880	92288A613	000000

316 Stainless Steel

316 stainless steel key stock has the best corrosion resistance of our stainless steel key stock and may be mildly magnetic. 316 stainless steel key stock is more corrosion resistant than steel key stock.

DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.

			Tolerance, mm
	Ht. × Wd.	Tolerance Rating	Ht.	Wd.	Min. Hardness	Specs. Met		Each
305 mm Long



		4 mm × 6 mm	Undersized	-0.075 to 0.000	-0.030 to 0.000	Rockwell B85	DIN 6880	92288A621	000000


		14 mm × 25 mm	Undersized	-0.110 to 0.000	-0.052 to 0.000	Rockwell B85	DIN 6880	92288A622	000000
		16 mm × 28 mm	Undersized	-0.110 to 0.000	-0.052 to 0.000	Rockwell B85	DIN 6880	92288A623	000000
		18 mm × 32 mm	Undersized	-0.110 to 0.000	-0.062 to 0.000	Rockwell B85	DIN 6880	92288A624	000000


		1,000 mm Long



				3 mm × 3 mm	Undersized	-0.025 to 0.000	-0.025 to 0.000	Rockwell B85	DIN 6880	92288A628	00000


				3 mm × 5 mm	Undersized	-0.060 to 0.000	-0.030 to 0.000	Rockwell B85	DIN 6880	92288A637	00000
				4 mm × 4 mm	Undersized	-0.030 to 0.000	-0.030 to 0.000	Rockwell B85	DIN 6880	92288A638	00000
				5 mm × 5 mm	Undersized	-0.030 to 0.000	-0.030 to 0.000	Rockwell B85	DIN 6880	92288A639	00000
				6 mm × 6 mm	Undersized	-0.030 to 0.000	-0.030 to 0.000	Rockwell B85	DIN 6880	92288A640	00000
				7 mm × 7 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B85	DIN 6880	92288A641	00000
				7 mm × 8 mm	Undersized	-0.090 to 0.000	-0.036 to 0.000	Rockwell B85	DIN 6880	92288A642	00000
				8 mm × 8 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B85	DIN 6880	92288A643	00000
				8 mm × 10 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B85	DIN 6880	92288A644	00000
				8 mm × 12 mm	Undersized	-0.036 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A645	00000
				9 mm × 14 mm	Undersized	-0.090 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A646	000000


				10 mm × 10 mm	Undersized	-0.036 to 0.000	-0.036 to 0.000	Rockwell B85	DIN 6880	92288A647	00000
				10 mm × 12 mm	Undersized	-0.036 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A648	000000
				10 mm × 16 mm	Undersized	-0.090 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A649	000000
				11 mm × 18 mm	Undersized	-0.110 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A650	000000
				12 mm × 12 mm	Undersized	-0.043 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A651	000000
				14 mm × 14 mm	Undersized	-0.043 to 0.000	-0.043 to 0.000	Rockwell B85	DIN 6880	92288A653	000000
				14 mm × 22 mm	Undersized	-0.110 to 0.000	-0.052 to 0.000	Rockwell B85	DIN 6880	92288A654	000000
				14 mm × 25 mm	Undersized	-0.110 to 0.000	-0.052 to 0.000	Rockwell B85	DIN 6880	92288A630	000000
				16 mm × 28 mm	Undersized	-0.110 to 0.000	-0.052 to 0.000	Rockwell B85	DIN 6880	92288A631	000000

316/316L Stainless Steel

316/316L stainless steel key stock has the best corrosion resistance of our stainless steel key stock and may be mildly magnetic. 316/316L stainless steel key stock is more corrosion resistant than steel key stock.

DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.

			Tolerance
	Ht. × Wd.	Tolerance Rating	Ht.	Wd.	Min. Hardness	Specs. Met		Each
12" Long



		7/64" × 7/64"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	—	98530A915	000000


		7/64" × 7/64"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	—	98530A099	00000
		1/8" × 1/8"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	—	98530A673	0000
		1/8" × 1/8"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	—	98530A100	0000
		1/8" × 1/4"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A102	00000
		3/16" × 3/16"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	—	98530A677	00000
		3/16" × 3/16"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	—	98530A177	0000
		3/16" × 1/4"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A118	00000
		1/4" × 1/8"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A656	00000
		1/4" × 3/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A660	00000
		1/4" × 1/4"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	—	98530A638	00000


		1/4" × 1/4"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A136	00000
		1/4" × 5/16"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A137	00000
		1/4" × 3/8"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A138	00000
		1/4" × 1/2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A494	00000
		1/4" × 1/2"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A140	00000
		5/16" × 1/4"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A746	00000
		5/16" × 5/16"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	—	98530A778	00000
		5/16" × 5/16"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A150	00000
		5/16" × 3/8"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A151	00000
		3/8" × 1/4"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A695	00000


		3/8" × 5/16"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A742	00000
		3/8" × 3/8"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A734	00000
		3/8" × 3/8"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A165	00000
		3/8" × 1/2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A594	00000
		3/8" × 1/2"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A167	00000
		1/2" × 1/2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	—	98530A492	00000
		1/2" × 1/2"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A187	00000
		1/2" × 3/4"	Undersized	-0.003" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A190	00000
		1/2" × 1"	Undersized	-0.003" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A203	000000
		5/8" × 5/8"	Oversized	0.000" to 0.004"	0.000" to 0.004"	Not Rated	—	98530A790	00000


		5/8" × 5/8"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A206	00000
		3/4" × 3/4"	Oversized	0.000" to 0.004"	0.000" to 0.004"	Not Rated	—	98530A687	00000
		3/4" × 3/4"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A226	00000
		7/8" × 7/8"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A242	000000
		1" × 1"	Oversized	0.000" to 0.004"	0.000" to 0.004"	Not Rated	—	98530A427	000000
		1" × 1"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A229	000000


		36" Long



				1/8" × 1/8"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	—	98530A412	00000


				3/16" × 3/16"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	—	98530A410	00000
				1/4" × 1/4"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A415	00000
				5/16" × 5/16"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A420	00000
				3/8" × 3/8"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A425	00000
				1/2" × 1/2"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	—	98530A430	000000
				5/8" × 5/8"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A434	000000
				3/4" × 3/4"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A442	000000
1" × 1"				Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	—	98530A446	000000


305 mm Long



				2 mm × 2 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A100	0000


				3 mm × 3 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Not Rated	—	92288A130	0000
				3 mm × 3 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A110	0000
				4 mm × 4 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Not Rated	—	92288A159	00000
				4 mm × 4 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A120	0000
				5 mm × 5 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A130	0000
				6 mm × 6 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Not Rated	—	92288A172	00000
				6 mm × 6 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A140	0000
				7 mm × 7 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Not Rated	—	92288A225	00000
				7 mm × 7 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A150	00000
				7 mm × 8 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Not Rated	—	92288A183	00000


				7 mm × 8 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A155	00000
				8 mm × 8 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A160	00000
				8 mm × 10 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A164	00000
				8 mm × 12 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A165	00000
				9 mm × 14 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A166	00000
				10 mm × 10 mm	Oversized	0.000 mm to 0.076 mm	0.000 mm to 0.076 mm	Not Rated	—	92288A119	00000
				10 mm × 10 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A170	00000
				10 mm × 12 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A175	00000
				10 mm × 16 mm	Undersized	-0.090 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A176	00000
				11 mm × 18 mm	Undersized	-0.090 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A177	00000


				12 mm × 12 mm	Undersized	-0.043 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A180	00000
				12 mm × 20 mm	Undersized	-0.110 mm to 0.000 mm	-0.052 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A185	00000
				14 mm × 14 mm	Undersized	-0.043 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A190	00000
				14 mm × 22 mm	Undersized	-0.110 mm to 0.000 mm	-0.052 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A195	00000
				16 mm × 16 mm	Undersized	-0.043 mm to 0.000 mm	-0.043 mm to 0.000 mm	Rockwell B86	DIN 6880	90457A200	00000

416 Stainless Steel

416 stainless steel key stock is stronger than other stainless key stock and can be heat treated for extra strength. It's corrosion resistant and magnetic. 416 stainless steel key stock is more corrosion resistant than steel key stock.

			Tolerance
	Ht. × Wd.	Tolerance Rating	Ht.	Wd.	Min. Hardness		Each
12" Long



		3/16" × 3/16"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	99374A453	00000


		3/16" × 3/16"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	99374A100	0000
		1/4" × 1/4"	Oversized	0.000" to 0.002"	0.000" to 0.002"	Not Rated	99374A344	0000
		1/4" × 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B86	99374A110	0000
		5/16" × 5/16"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	99374A120	00000
		3/8" × 3/8"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Not Rated	99374A977	00000
		3/8" × 3/8"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	99374A130	00000
		1/2" × 1/2"	Undersized	-0.003" to 0.000"	-0.003" to 0.000"	Rockwell B86	99374A140	00000
		5/8" × 5/8"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	99374A150	00000
		3/4" × 3/4"	Undersized	-0.004" to 0.000"	-0.004" to 0.000"	Rockwell B86	99374A160	00000

Machine Keys

Straight keys, with a square or rectangular cross section, are the most common type of key. Install them in keyways to transmit torque from shafts to gears and other components. Machine keys are often the same material as the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.

18-8 Stainless Steel—18-8 stainless steel keys offer a balance of strength and corrosion resistance. They may be mildly magnetic.

Oversized Tolerance—Slightly larger than the size listed in the table, oversized keys fit tightly in a keyway. Press them into place for use in high-torque applications or to replace a key in a worn keyway.

Undersized Tolerance—Slightly smaller than the size listed in the table, undersized keys are the choice when you need a slightly looser fit or when you have an inconsistent keyway. Use them when parts need to be taken apart frequently, such as for maintenance or prototyping.

			Tolerance
	Lg.	Tolerance Rating	Ht.	Wd.	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
18-8 Stainless Steel







				1/8" × 1/8"

				1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	10	92624A090	00000


				1/2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	10	92624A405	0000
				1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	10	92624A095	0000
				3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	10	92624A100	0000
				1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	10	92624A110	0000
				1 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	10	92624A115	00000
				1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B82	—	10	92624A117	00000




						3/16" × 3/16"

						1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A118	00000


						1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A120	00000
						3/4"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	10	92624A407	0000
						3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A130	00000
						7/8"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A135	00000
						1"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	10	92624A404	0000
						1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A140	00000
						1 1/8"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A145	00000
						1 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A150	00000
						1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A160	0000
						1 3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A170	0000


						2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A180	0000
						2 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A190	0000




								1/4" × 1/4"

								1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A194	00000


								3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A195	00000
								1"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	10	92624A403	00000
								1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	10	92624A205	00000
								1 1/4"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	5	92624A402	0000
								1 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A215	0000
								1 1/2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	5	92624A401	0000
								1 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A230	0000
								1 3/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A240	0000
								2"	Oversized	0.000" to 0.003"	0.000" to 0.003"	Rockwell B82	—	5	92624A406	00000
								2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A245	00000


								2 1/4"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A250	00000
								2 1/2"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A255	00000
3"								Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A260	00000
3 1/2"	Undersized							-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A265	00000




		5/16" × 5/16"

		1 1/4"	Undersized					-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A275	00000


		1 1/2"	Undersized					-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A277	00000
		2"	Undersized					-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A281	00000
		2 1/2"	Undersized					-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A283	00000




								3/8" × 3/8"

								1"	Undersized	-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A285	00000


				1 1/4"	Undersized			-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A287	00000
				1 1/2"	Undersized			-0.002" to 0.000"	-0.002" to 0.000"	Rockwell B97	—	5	92624A288	00000


				316 Stainless Steel







										3 mm × 3 mm

										8 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A103	0000


										10 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A105	0000
										12 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A106	0000
										14 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A107	0000
										15 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A112	0000
										18 mm	Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A114	0000
						20 mm				Undersized	-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A119	0000
						22 mm	Undersized			-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A124	0000
						25 mm	Undersized			-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A125	0000
						30 mm	Undersized			-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A132	0000
						40 mm	Undersized			-0.025 mm to 0.000 mm	-0.025 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A143	00000




										4 mm × 4 mm

										12 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A159	0000


										14 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A163	0000
										15 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A164	0000
										20 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A172	0000
										25 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A175	0000
										28 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A177	0000
										30 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A181	0000
										32 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A185	0000
										35 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A202	0000
										40 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A207	00000
50 mm										Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A210	00000




										5 mm × 5 mm

										8 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A213	0000


										10 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A217	0000
										12 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A220	0000
		15 mm								Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A228	0000
		16 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A237	0000
		18 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A244	0000
		20 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A246	0000
		25 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A250	00000
		30 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A262	00000
		35 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A273	00000
		40 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A278	00000


		50 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A295	00000
		55 mm	Undersized							-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A297	00000
		70 mm	Undersized	-0.030 mm to 0.000 mm						-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A313	0000




				6 mm × 6 mm

				10 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A316	0000


				15 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A328	0000
				20 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A339	00000
				25 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A356	00000
				30 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A359	00000
				32 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A368	00000
				35 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A372	00000
				40 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A393	00000
				45 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A396	0000
				56 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A401	0000
				60 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A411	0000


				65 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A429	0000
				70 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A436	0000
				75 mm	Undersized			-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A441	0000
				80 mm	Undersized	-0.030 mm to 0.000 mm		-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A463	0000
				90 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A466	0000
				100 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A472	0000
				120 mm	Undersized	-0.030 mm to 0.000 mm	-0.030 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A477	0000




						7 mm × 8 mm

						18 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A498	00000


						20 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A499	00000
						25 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	5	98870A509	00000
						28 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A510	0000
						30 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A511	0000
						35 mm	Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A523	0000
36 mm						Undersized	-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A526	0000
40 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A530	0000
65 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A556	0000
80 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A564	0000
90 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A566	0000


100 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A571	00000
125 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A584	00000
150 mm	Undersized					-0.090 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A598	00000




						8 mm × 10 mm

						45 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A630	0000


						50 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A634	0000
						55 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A635	0000
						56 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A636	0000
						70 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A648	00000
						90 mm	Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A660	00000
		125 mm				Undersized	-0.036 mm to 0.000 mm	-0.036 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A672	00000




						8 mm × 12 mm

						20 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A674	0000


						22 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A678	0000
						36 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A740	0000
						50 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A850	0000
						70 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A898	00000
						80 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A907	00000
						110 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A934	00000
						130 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A946	00000
						140 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A947	00000
						150 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A948	00000
						200 mm	Undersized	-0.036 mm to 0.000 mm	-0.043 mm to 0.000 mm	Not Rated	DIN 6885	1	98870A955	00000

Step Machine Key Stock

When a keyway is damaged, cut a new, wider one. This key stock is stepped to match repaired keyways in shafts or gears. Cut it to length to create the machine key you need.

Machine Key Stock for Gears

18-8 Stainless Steel—18-8 stainless steel key stock offers a balance of strength and corrosion resistance. It may be mildly magnetic. 18-8 stainless steel key stock is more corrosion resistant than steel key stock.

	For Hub Keyway			For Shaft Keyway
	Wd. (A)	Ht. (B)	Wd. (A) Tolerance	Wd. (C)	Ht. (D)	Wd. (C) Tolerance	Ht.	Tolerance Rating	Ht. Tolerance		Each
18-8 Stainless Steel







				12" Long

				3/16"	3/32"	0.000" to 0.002"	1/8"	1/16"	0.000" to 0.002"	5/32"	Oversized	-0.015" to 0.015"	8730N111	000000


				3/8"	3/16"	0.000" to 0.002"	5/16"	1/8"	0.000" to 0.002"	5/16"	Oversized	-0.015" to 0.015"	8730N112	00000
				3/8"	3/16"	0.000" to 0.002"	5/16"	5/32"	0.000" to 0.002"	11/32"	Oversized	-0.015" to 0.015"	8730N113	000000
				3/4"	3/8"	0.000" to 0.002"	5/8"	5/16"	0.000" to 0.002"	11/16"	Oversized	-0.015" to 0.015"	8730N114	000000

Machine Key Stock for Shafts

	For Hub Keyway			For Shaft Keyway
	Wd. (A)	Ht. (B)	Wd. (A) Tolerance	Wd. (C)	Ht. (D)	Wd. (C) Tolerance	Ht.	Tolerance Rating	Ht. Tolerance		Each
18-8 Stainless Steel







				12" Long

				3/16"	3/32"	0.000" to 0.002"	1/4"	3/32"	0.000" to 0.002"	3/16"	Oversized	-0.014" to 0.017"	8730N115	000000


				3/16"	3/32"	0.000" to 0.002"	1/4"	1/8"	0.000" to 0.002"	7/32"	Oversized	-0.013" to 0.014"	8730N116	000000
				1/4"	1/8"	0.000" to 0.002"	5/16"	1/8"	0.000" to 0.002"	1/4"	Oversized	-0.014" to 0.014"	8730N117	00000
				1/4"	1/8"	0.000" to 0.002"	3/8"	1/8"	0.000" to 0.002"	1/4"	Oversized	-0.014" to 0.014"	8730N118	000000
				1/4"	1/8"	0.000" to 0.002"	3/8"	3/16"	0.000" to 0.002"	5/16"	Oversized	-0.014" to 0.014"	8730N119	00000
				3/8"	3/16"	0.000" to 0.002"	7/16"	5/32"	0.000" to 0.002"	11/32"	Oversized	-0.014" to 0.014"	8730N121	000000
				3/8"	3/16"	0.000" to 0.002"	1/2"	3/16"	0.000" to 0.002"	3/8"	Oversized	-0.011" to 0.015"	8730N122	000000
				3/8"	3/16"	0.000" to 0.002"	1/2"	1/4"	0.000" to 0.002"	7/16"	Oversized	-0.011" to 0.014"	8730N123	000000
				1/2"	1/4"	0.000" to 0.002"	5/8"	5/16"	0.000" to 0.002"	9/16"	Oversized	-0.013" to 0.014"	8730N124	000000
				3/4"	3/8"	0.000" to 0.002"	7/8"	7/16"	0.000" to 0.002"	13/16"	Oversized	-0.013" to 0.015"	8730N125	000000

Oversized Key Stock Assortments

Make a key that is the exact length you need. Because this key stock is slightly larger than standard key stock, keys will fit tightly in worn keyways.

18-8 Stainless Steel—18-8 stainless steel key stock is chemical resistant and may be mildly magnetic.

	Straight Keys Included	Key Size Tolerance	Container Type		Each
18-8 Stainless Steel



	7	1/8" × 1/8" × 12" Lg. (1 Piece) 3/16" × 3/16" × 12" Lg. (1 Piece) 1/4" × 1/4" × 12" Lg. (1 Piece) 5/16" × 5/16" × 12" Lg. (1 Piece) 3/8" × 3/8" × 12" Lg. (1 Piece) 7/16" × 7/16" × 12" Lg. (1 Piece) 1/2" × 1/2" × 12" Lg. (1 Piece)	0" to 0.003"	Cardboard Tube	90143A200	000000


	31	1/8" × 1/8" × 12" Lg. (5 Pieces) 3/16" × 3/16" × 12" Lg. (5 Pieces) 1/4" × 1/4" × 12" Lg. (5 Pieces) 5/16" × 5/16" × 12" Lg. (5 Pieces) 3/8" × 3/8" × 12" Lg. (5 Pieces) 7/16" × 7/16" × 12" Lg. (3 Pieces) 1/2" × 1/2" × 12" Lg. (3 Pieces)	0" to 0.003"	Cardboard Box	90143A140	000000
	31	4 mm × 4 mm × 305 mm Lg. (5 Pieces) 5 mm × 5 mm × 305 mm Lg. (5 Pieces) 6 mm × 6 mm × 305 mm Lg. (5 Pieces) 7 mm × 7 mm × 305 mm Lg. (5 Pieces) 8 mm × 8 mm × 305 mm Lg. (5 Pieces) 10 mm × 10 mm × 305 mm Lg. (3 Pieces) 12 mm × 12 mm × 305 mm Lg. (3 Pieces)	0 mm to 0.076 mm	Cardboard Box	90143A150	000000