Heavy Duty Spring Pins | McMaster-Carr

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400 Series Stainless Steel

Hole Diameter

Double Shear Breaking Strength

Passivation

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Hardness

Minimum Hardness

DFARS Specialty Metals

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U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

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Export Control Classification Number (ECCN)

EAR99

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100 Products

Heavy Duty Coiled Spring Pins

End View

Made of thicker material than our other coiled spring pins, these are about 30% stronger with the same resilience to vibration and shock. They are often used in power transmission, automation, and other assemblies with constant motion and sudden starts and stops. Because of their spiral shape, pins flex to conform to holes that aren’t perfectly round.

Carbon Steel—These pins won't deform from stress and vibration. Although they're stronger than stainless steel, they're best for dry environments since moisture will cause them to rust.

Wear-Resistant 400 Series Stainless Steel—Our most wear-resistant stainless steel pins, these are good for pivoting parts that create a lot of friction. They hold up in environments that experience occasional moisture, but they're not as corrosion resistant as 18-8 and 316 stainless steel.

	Lg.	For Hole Dia.	Double Shear Breaking Strength, lbf	Min. Hardness	Specs. Met	Pkg. Qty.		Pkg.
Carbon Steel







				1/16" Diameter

				1/4"	0.061" to 0.065"	450	Rockwell C42	ASME B18.8.2	50	95755A051	000000


				1/2"	0.061" to 0.065"	450	Rockwell C42	ASME B18.8.2	50	95755A053	00000
				1"	0.061" to 0.065"	450	Rockwell C42	ASME B18.8.2	10	95755A057	00000




						3/32" Diameter

						1/4"	0.093" to 0.097"	1,100	Rockwell C42	ASME B18.8.2	100	95755A111	00000


						3/8"	0.093" to 0.097"	1,100	Rockwell C42	ASME B18.8.2	100	95755A116	00000
						1/2"	0.093" to 0.097"	1,100	Rockwell C42	ASME B18.8.2	100	95755A119	00000
						5/8"	0.093" to 0.097"	1,100	Rockwell C42	ASME B18.8.2	100	95755A123	00000
						3/4"	0.093" to 0.097"	1,100	Rockwell C42	ASME B18.8.2	100	95755A127	00000
						1 1/2"	0.093" to 0.097"	1,100	Rockwell C42	ASME B18.8.2	100	95755A136	00000




								1/8" Diameter

								1/4"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A210	00000


								3/8"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A212	00000
								7/16"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A216	00000
								1/2"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A221	00000
								5/8"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A227	00000
								3/4"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A231	00000
								7/8"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A236	00000
								1"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A239	00000
								1 1/4"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	100	95755A242	00000
								1 1/2"	0.124" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	50	95755A246	00000
								2"	0.125" to 0.129"	2,000	Rockwell C42	ASME B18.8.2	50	95755A249	00000




										3/16" Diameter

										1/2"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	50	95755A313	00000


										5/8"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	50	95755A315	00000
										3/4"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	50	95755A319	00000
										7/8"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	50	95755A321	00000
										1"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	50	95755A324	00000
										1 1/4"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	25	95755A328	00000
										1 1/2"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	25	95755A331	00000
										1 3/4"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	10	95755A138	0000
										2"	0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	10	95755A336	0000
2 1/2"										0.185" to 0.192"	4,500	Rockwell C42	ASME B18.8.2	10	95755A342	00000




		1/4" Diameter

		3/4"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	50	95755A402	00000


		1"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	25	95755A404	00000
		1 1/8"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	25	95755A409	00000
		1 1/4"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	25	95755A415	00000
		1 3/8"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	10	95755A417	0000
		1 1/2"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	10	95755A419	0000
		1 3/4"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	10	95755A421	0000
		2"	0.247" to 0.256"							7,800	Rockwell C42	ASME B18.8.2	10	95755A423	00000
		3"	0.247" to 0.256"	7,800						Rockwell C42	ASME B18.8.2	5	95755A433	0000




				5/16" Diameter

				1"	0.308" to 0.319"					12,000	Rockwell C42	ASME B18.8.2	5	95755A471	00000


				1 1/4"	0.308" to 0.319"					12,000	Rockwell C42	ASME B18.8.2	5	95755A473	0000
				1 1/2"	0.308" to 0.319"					12,000	Rockwell C42	ASME B18.8.2	5	95755A474	00000
				1 3/4"	0.312" to 0.319"					12,000	Rockwell C42	ASME B18.8.2	1	95755A475	0000
				2"	0.308" to 0.319"					12,000	Rockwell C42	ASME B18.8.2	1	95755A477	0000
				2 1/2"	0.312" to 0.319"					12,000	Rockwell C42	ASME B18.8.2	1	95755A481	0000
				3"	0.308" to 0.319"	12,000				Rockwell C42	ASME B18.8.2	1	95755A485	0000




						3/8" Diameter

						1"	0.37" to 0.383"			18,000	Rockwell C42	ASME B18.8.2	10	95755A508	00000


						1 1/4"	0.37" to 0.383"			18,000	Rockwell C42	ASME B18.8.2	5	95755A514	0000
						1 1/2"	0.37" to 0.383"			18,000	Rockwell C42	ASME B18.8.2	5	95755A519	00000
						2"	0.37" to 0.383"			18,000	Rockwell C42	ASME B18.8.2	5	95755A525	00000
						2 1/2"	0.37" to 0.383"			18,000	Rockwell C42	ASME B18.8.2	5	95755A530	00000
						3"	0.37" to 0.383"			18,000	Rockwell C42	ASME B18.8.2	1	95755A536	0000




										1/2" Diameter

								1 1/4"	0.493" to 0.51"	32,000	Rockwell C42	ASME B18.8.2	5	95755A641	00000


								1 1/2"	0.493" to 0.51"	32,000	Rockwell C42	ASME B18.8.2	5	95755A646	00000
								1 3/4"	0.493" to 0.51"	32,000	Rockwell C42	ASME B18.8.2	1	95755A652	0000
								2"	0.493" to 0.51"	32,000	Rockwell C42	ASME B18.8.2	1	95755A658	0000
								2 1/2"	0.493" to 0.51"	32,000	Rockwell C42	ASME B18.8.2	1	95755A665	0000
								3"	0.493" to 0.51"	32,000	Rockwell C42	ASME B18.8.2	1	95755A673	0000


								Spring Steel







										5/8" Diameter

										2 1/2"	0.618" to 0.635"	Not Rated	Rockwell C42	ASME B18.8.2	1	95755A737	0000


										3 1/2"	0.618" to 0.635"	Not Rated	Rockwell C42	ASME B18.8.2	1	95755A749	00000




												3/4" Diameter

												2"	0.743" to 0.76"	Not Rated	Rockwell C42	ASME B18.8.2	1	95755A867	00000


		3"	0.743" to 0.76"									Not Rated	Rockwell C42	ASME B18.8.2	1	95755A880	00000
		4"	0.743" to 0.76"									Not Rated	Rockwell C42	ASME B18.8.2	1	95755A889	00000
		5"	0.743" to 0.76"									Not Rated	Rockwell C42	ASME B18.8.2	1	95755A897	00000


		Wear-Resistant 400 Series Stainless Steel







														3/32" Diameter

				1/4"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	50	95765A204	00000


				3/8"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	50	95765A209	00000
				1/2"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	50	95765A215	00000
				5/8"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	25	95765A219	0000
				3/4"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	25	95765A225	0000
				1"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	25	95765A231	00000
				1 1/2"	0.093" to 0.097"									1,100	Rockwell C46	ASME B18.8.2	25	95765A238	00000




						1/8" Diameter

						3/8"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A316	00000


						7/16"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A321	00000
						1/2"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A327	00000
						5/8"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A334	00000
						3/4"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A339	00000
						7/8"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A342	00000
						1"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A348	00000
						1 1/4"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	25	95765A354	00000
						1 1/2"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	10	95765A359	0000
						2"	0.124" to 0.129"							2,000	Rockwell C46	ASME B18.8.2	10	95765A361	00000




								3/16" Diameter

3/8"	0.187" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	25	93740A648	00000


1/2"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	10	95765A408	0000
3/4"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	10	95765A413	0000
1"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	10	95765A417	00000
1 1/4"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	5	95765A419	00000
1 1/2"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	5	95765A422	0000
1 3/4"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	5	95765A424	0000
2"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	5	95765A426	0000
2 1/2"	0.185" to 0.192"							4,500	Rockwell C46					ASME B18.8.2	5	95765A433	00000




								1/4" Diameter

								1/2"	0.247" to 0.256"	7,800	Rockwell C46			ASME B18.8.2	5	95765A512	0000


								3/4"	0.247" to 0.256"	7,800	Rockwell C46			ASME B18.8.2	5	95765A514	00000
								1"	0.247" to 0.256"	7,800	Rockwell C46			ASME B18.8.2	5	95765A516	00000
		1 1/8"						0.247" to 0.256"	7,800	Rockwell C46	ASME B18.8.2			5	95765A524	0000
		1 1/4"	0.247" to 0.256"					7,800	Rockwell C46	ASME B18.8.2	5			95765A533	00000
		1 3/8"	0.247" to 0.256"					7,800	Rockwell C46	ASME B18.8.2	5			95765A536	00000
		1 1/2"	0.247" to 0.256"					7,800	Rockwell C46	ASME B18.8.2	5			95765A539	00000
		1 3/4"	0.25" to 0.256"					7,800	Rockwell C46	ASME B18.8.2	5			95765A542	00000
		2"	0.247" to 0.256"					7,800	Rockwell C46	ASME B18.8.2	5			95765A545	00000
		2 1/2"	0.247" to 0.256"					7,800	Rockwell C46	ASME B18.8.2	5			95765A551	00000