Carbon Steel Hex Rods | McMaster-Carr

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50,000 psi to 99,999 psi

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226 Products

About Steel

Compare over 50 grades of steel and cast iron to find the right material for you—all with material certificates for traceability.

Multipurpose Low-Carbon Steel Hex Bars

Also known as mild steel, low-carbon steel is easy to machine, form, and weld. It's often fabricated into low-strength fasteners and fixture clamps. For added wear resistance, it can be surface hardened with heat treating.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Wd.	Wd. Tolerance	Yield Strength, psi	Hardness		1/2 ft. Long	1 ft. Long	2 ft. Long	3 ft. Long	4 ft. Long	6 ft. Long	8 ft. Long	12 ft. Long
1/4"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K121	—	00000	—	00000	—	00000	—	—
5/16"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K141	—	0000	—	0000	—	0000	000000	—
3/8"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K161	—	0000	—	0000	—	00000	00000	—
7/16"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K29	—	—	—	00000	—	00000	—	—
1/2"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K181	—	0000	00000	00000	000000	00000	00000	000000
9/16"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K31	—	—	—	00000	—	00000	—	—
5/8"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K221	—	0000	0000	00000	00000	00000	00000	—
11/16"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K251	—	0000	00000	00000	00000	00000	00000	—
3/4"	-0.002" to 0"	54,000	Rockwell B70 (Medium)	6512K41	—	0000	00000	00000	00000	00000	00000	00000
7/8"	-0.003" to 0"	54,000	Rockwell B70 (Medium)	6512K43	—	00000	00000	00000	00000	00000	00000	00000
1"	-0.003" to 0"	54,000	Rockwell B70 (Medium)	6512K45	—	00000	00000	00000	00000	00000	00000	00000
1 1/8"	-0.003" to 0"	54,000	Rockwell B70 (Medium)	6512K441	00000	00000	00000	00000	00000	00000	00000	—
1 1/4"	-0.003" to 0"	54,000	Rockwell B70 (Medium)	6512K48	00000	00000	00000	00000	00000	00000	000000	—
1 3/8"	-0.003" to 0"	54,000	Rockwell B70 (Medium)	6512K531	00000	00000	—	00000	—	000000	—	—
1 1/2"	-0.003" to 0"	54,000	Rockwell B70 (Medium)	6512K34	00000	00000	00000	00000	—	000000	—	—
1 5/8"	-0.004" to 0"	54,000	Rockwell B70 (Medium)	6512K541	—	00000	—	00000	—	000000	—	—
1 3/4"	-0.004" to 0"	54,000	Rockwell B70 (Medium)	6512K551	00000	00000	—	00000	—	000000	—	—
2"	-0.004" to 0"	54,000	Rockwell B70 (Medium)	6512K35	00000	00000	00000	000000	—	000000	—	—
2 1/4"	-0.004" to 0"	54,000	Rockwell B70 (Medium)	6512K23	—	00000	00000	000000	—	000000	—	—
2 1/2"	-0.004" to 0"	54,000	Rockwell B70 (Medium)	6512K36	—	00000	—	000000	—	000000	—	—
5 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K11	—	0000	—	0000	—	00000	—	—
6 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K57	—	0000	—	0000	—	00000	—	—
7 mm	-0.09 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K13	—	0000	—	0000	—	00000	—	—
8 mm	-0.09 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K58	—	0000	—	00000	—	00000	—	—
10 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K15	—	0000	00000	00000	—	00000	—	—
12 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K17	—	0000	—	00000	—	00000	—	—
13 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K59	—	00000	00000	00000	—	00000	—	—
14 mm	-0.11 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K71	—	00000	—	00000	—	00000	—	—
15 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K19	—	00000	—	00000	—	00000	—	—
16 mm	-0.11 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K72	—	00000	—	00000	—	00000	—	—
17 mm	-0.1 mm to 0 mm	54,000	Rockwell B70 (Medium)	6512K73	—	00000	—	00000	—	00000	—	—
18 mm	-0.051 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K61	—	00000	—	00000	—	00000	—	—
19 mm	-0.13 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K62	—	00000	—	00000	—	00000	—	—
20 mm	-0.13 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K21	—	00000	—	00000	—	00000	—	—
22 mm	-0.13 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K63	—	00000	—	00000	—	000000	—	—
24 mm	-0.12 mm to 0 mm	54,000	Rockwell B70 (Medium)	6512K74	—	00000	—	00000	—	000000	—	—
25 mm	-0.076 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K27	—	00000	—	00000	—	000000	—	—
30 mm	-0.12 mm to 0 mm	54,000	Rockwell B70 (Medium)	6512K75	—	00000	—	000000	—	000000	—	—
50 mm	-0.16 mm to 0 mm	Not Rated	Rockwell B80 (Medium)	6512K37	—	000000	—	000000	—	000000	—	—

Lead-Free Ultra-Machinable 1215 Carbon Steel Hex Bars

A lead-free alternative to 12L14, 1215 carbon steel contains the same amount of sulfur and phosphorus for excellent machinability. It is often used for shaft couplings, studs, and pins.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Wd.	Wd. Tolerance	Yield Strength, psi	Hardness		1 ft. Long	3 ft. Long	6 ft. Long
1/4"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	4416T61	00000	000000	000000
3/8"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	4416T63	0000	00000	00000
1/2"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	4416T65	0000	00000	00000
5/8"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	4416T69	0000	00000	00000
11/16"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	4416T71	00000	00000	00000
3/4"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	4416T73	00000	00000	00000
13/16"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	4416T75	00000	00000	00000
7/8"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	4416T77	00000	00000	00000
15/16"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	4416T79	00000	00000	00000
1"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	4416T81	00000	00000	00000
1 1/2"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	4416T83	00000	00000	000000
2"	-0.004" to 0"	60,000	Rockwell B85 (Medium)	4416T85	00000	000000	000000
2 1/2"	-0.004" to 0"	60,000	Rockwell B85 (Medium)	4416T87	000000	000000	000000
3"	-0.005" to 0"	60,000	Rockwell B85 (Medium)	4416T89	000000	000000	000000

Ultra-Machinable 12L14 Carbon Steel Hex Bars

The lead additive acts as a lubricant, which allows 12L14 carbon steel to withstand very fast machining. It's used to fabricate a wide variety of machine parts, such as hex nuts, compression fittings, and hydraulic adapters. For added wear resistance, they can be surface hardened with heat treating.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Wd.	Wd. Tolerance	Yield Strength, psi	Hardness		1 ft. Long	3 ft. Long	6 ft. Long
3/16"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K122	00000	00000	000000
1/4"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K112	0000	0000	00000
5/16"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K132	0000	0000	00000
3/8"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K152	0000	00000	00000
7/16"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K172	0000	00000	00000
1/2"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K192	0000	00000	00000
9/16"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K142	0000	00000	00000
5/8"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K212	0000	00000	00000
11/16"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K162	0000	00000	00000
3/4"	-0.002" to 0"	60,000	Rockwell B85 (Medium)	6606K232	0000	00000	00000
13/16"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K182	00000	00000	00000
7/8"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K85	00000	00000	00000
15/16"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K222	00000	00000	00000
1"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K87	00000	00000	00000
1 1/8"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K242	00000	00000	00000
1 1/4"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K89	00000	00000	000000
1 3/8"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K31	00000	00000	000000
1 1/2"	-0.003" to 0"	60,000	Rockwell B85 (Medium)	6606K33	00000	00000	000000
1 3/4"	-0.004" to 0"	60,000	Rockwell B85 (Medium)	6606K35	00000	00000	000000
2"	-0.004" to 0"	60,000	Rockwell B85 (Medium)	6606K37	00000	000000	000000
3"	-0.005" to 0"	60,000	Rockwell B85 (Medium)	6606K38	000000	000000	000000

Extreme-Strength Highly Machinable 1144 Carbon Steel Hex Bars

With more carbon and manganese than other machinable carbon steel, 1144 carbon steel has higher yield strength and hardness. Also known as Stressproof, these hex bars are stress-relieved to minimize warping during machining. Use them to make parts that require high strength, such as high-strength fasteners and fittings.

Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.

Wd.	Wd. Tolerance	Heat Treatment	Yield Strength, psi	Hardness		1 ft. Long	3 ft. Long	6 ft. Long
1/4"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N11	—	—	00000
5/16"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N12	—	—	00000
3/8"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N47	—	000000	00000
1/2"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N48	—	00000	00000
9/16"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N49	—	00000	00000
5/8"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N51	—	00000	00000
11/16"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N52	000000	00000	00000
3/4"	-0.004" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N53	00000	00000	00000
7/8"	-0.005" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N54	00000	00000	00000
1"	-0.005" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N55	00000	00000	00000
1 1/8"	-0.005" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N56	00000	00000	000000
1 1/4"	-0.005" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N57	00000	00000	000000
1 1/2"	-0.005" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N58	00000	000000	000000
2"	-0.006" to 0"	Stress Relieved	100,000	Rockwell C25 (Hard)	9080N59	00000	000000	000000

Internally Threaded Turnbuckle-Style Connecting Rods

Similar to turnbuckles, these rods have right-hand threads on one end and left-hand threads on the other so you can make a linkage that adjusts for tension. Add right- and left-hand threaded rod ends to build your linkages. Rods have a hex-shaped body so you can adjust them with a wrench.

Note: The end with the left-hand threads is marked with a groove.

Carbon Steel—Carbon steel rods generally handle higher loads than aluminum and stainless steel rods.

	Thread Size	Thread Lg.	Hex Size		Each
Carbon Steel







				2" Overall Length

				10-32	1/2"	5/16"	8415N56	00000


				1/4"-28	3/4"	3/8"	8415N57	00000
				5/16"-24	3/4"	1/2"	8415N58	00000
				3/8"-24	3/4"	1/2"	8415N59	00000
				7/16"-20	3/4"	5/8"	8415N61	00000
				1/2"-20	3/4"	5/8"	8415N62	00000
				5/8"-18	3/4"	3/4"	8415N63	00000
				3/4"-16	3/4"	1"	8415N64	00000




						3" Overall Length

						1/4"-28	3/4"	3/8"	8415N67	00000


						5/16"-24	3/4"	1/2"	8415N68	00000
						3/8"-24	1"	1/2"	8415N69	00000
						1/2"-20	1"	5/8"	8415N72	00000
						5/8"-18	1"	3/4"	8415N73	00000
						3/4"-16	1"	1"	8415N74	00000




								4" Overall Length

								10-32	1/2"	5/16"	8415N76	00000


								1/4"-28	3/4"	3/8"	8415N77	00000
								5/16"-24	3/4"	1/2"	8415N78	00000
								3/8"-24	1"	1/2"	8415N79	00000
								7/16"-20	1"	5/8"	8415N81	00000
								1/2"-20	1"	5/8"	8415N82	00000
								5/8"-18	1"	7/8"	8415N83	00000
								3/4"-16	1"	1"	8415N84	00000




										6" Overall Length

										10-32	1/2"	5/16"	8415N86	00000


										1/4"-28	3/4"	3/8"	8415N87	00000
										5/16"-24	3/4"	1/2"	8415N88	00000
										3/8"-24	1"	1/2"	8415N89	00000
										7/16"-20	1"	5/8"	8415N91	00000
										1/2"-20	1"	5/8"	8415N92	00000
										5/8"-18	1"	7/8"	8415N93	00000
3/4"-16										1"	1"	8415N94	00000




		12" Overall Length

		1/4"-28	3/4"							3/8"	8415N97	00000


		3/8"-24	1"							1/2"	8415N99	00000
		7/16"-20	1"							5/8"	8415N101	00000
		1/2"-20	1"							5/8"	8415N102	00000
		5/8"-18	1"							7/8"	8415N103	00000
		3/4"-16	1"							1"	8415N104	00000




										18" Overall Length

										3/8"-24	1"	1/2"	8415N107	00000


				1/2"-20	1"					5/8"	8415N109	00000
				5/8"-18	1"					7/8"	8415N111	000000




										50 mm Overall Length

										M5 × 0.8 mm	12 mm	10 mm	8415N11	0000


										M8 × 1.25 mm	16 mm	12 mm	8415N13	0000
						M10 × 1.5 mm	16 mm			17 mm	8415N14	0000




										76 mm Overall Length

										M6 × 1 mm	16 mm	10 mm	8415N21	0000


										M8 × 1.25 mm	20 mm	12 mm	8415N22	00000
										M10 × 1.5 mm	20 mm	17 mm	8415N23	00000
										M12 × 1.75 mm	20 mm	19 mm	8415N24	00000




										100 mm Overall Length

										M6 × 1 mm	16 mm	10 mm	8415N29	00000


										M8 × 1.25 mm	20 mm	12 mm	8415N31	00000
										M10 × 1.5 mm	25 mm	17 mm	8415N32	00000
										M14 × 2 mm	25 mm	22 mm	8415N34	00000
										M16 × 2 mm	25 mm	24 mm	8415N35	00000




												150 mm Overall Length

M8 × 1.25 mm	20 mm											12 mm	8415N39	00000


M10 × 1.5 mm	25 mm											17 mm	8415N41	00000
M12 × 1.75 mm	25 mm											19 mm	8415N42	00000




												305 mm Overall Length

												M10 × 1.5 mm	25 mm	17 mm	8415N49	00000

Turnbuckle-Style Connecting Rods

Note: The end with the left-hand threads is marked with a groove.

Carbon Steel—Carbon steel rods handle higher loads than aluminum and 18-8 stainless steel rods.

				Carbon Steel
	Thread Size	Thread Lg.	Hex Size		Each
2" Overall Length



		6-32	1/2"	3/16"	8421N73	00000


		10-32	3/4"	1/4"	8421N74	0000
		1/4"-28	3/4"	1/4"	8421N75	0000
		5/16"-24	3/4"	5/16"	8421N76	00000
		3/8"-24	3/4"	3/8"	8421N77	0000
		1/2"-20	3/4"	1/2"	8421N78	00000


		3" Overall Length



				6-32	1/2"	3/16"	8421N79	0000


				10-32	3/4"	1/4"	8421N81	0000
				1/4"-28	3/4"	1/4"	8421N82	0000
				5/16"-24	3/4"	5/16"	8421N83	00000
				3/8"-24	1"	3/8"	8421N84	00000
				1/2"-20	1"	1/2"	8421N85	00000


				4" Overall Length



						10-32	1"	1/4"	8421N87	00000


						1/4"-28	1"	1/4"	8421N88	00000
						5/16"-24	1 1/4"	5/16"	8421N89	00000
						3/8"-24	1 1/4"	3/8"	8421N91	00000
						7/16"-20	1 1/4"	7/16"	8421N92	00000
						1/2"-20	1 1/2"	1/2"	8421N93	00000
						5/8"-18	1 3/4"	5/8"	8421N94	00000
						3/4"-16	1 3/4"	3/4"	8421N95	00000


						6" Overall Length



								10-32	1 3/16"	1/4"	8421N97	00000


								1/4"-28	1 1/2"	1/4"	8421N98	00000
								5/16"-24	1 5/8"	5/16"	8421N99	00000
								3/8"-24	2"	3/8"	8421N101	00000
								1/2"-20	2"	1/2"	8421N103	00000
								5/8"-18	2"	5/8"	8421N104	00000
								3/4"-16	2"	3/4"	8421N105	00000


								12" Overall Length



										10-32	1 3/16"	1/4"	8421N107	00000


1/4"-28	1 3/16"									1/4"	8421N108	00000
5/16"-24	1 5/8"									5/16"	8421N109	00000
3/8"-24	2"									3/8"	8421N111	00000
1/2"-20	2"									1/2"	8421N113	00000
3/4"-16	2"									3/4"	8421N115	00000


18" Overall Length



										10-32	1 3/16"	1/4"	8421N116	00000


		1/4"-28								1 1/2"	1/4"	8421N117	00000
		5/16"-24	1 5/8"							5/16"	8421N118	00000
		3/8"-24	2"							3/8"	8421N119	00000
		1/2"-20	2"							1/2"	8421N122	00000
		3/4"-16	2"							3/4"	8421N124	00000


		24" Overall Length



										1/4"-28	1 1/2"	1/4"	8421N126	00000


										5/16"-24	1 5/8"	5/16"	8421N127	00000
				3/8"-24						2"	3/8"	8421N128	00000
				1/2"-20	2"					1/2"	8421N131	00000
				3/4"-16	2"					3/4"	8421N133	00000


				50 mm Overall Length



										M5 × 0.8 mm	12 mm	5 mm	8421N11	0000


										M6 × 1 mm	16 mm	6 mm	8421N12	0000
										M8 × 1.25 mm	20 mm	8 mm	8421N13	0000
										M10 × 1.5 mm	20 mm	10 mm	8421N14	0000
										M16 × 2 mm	20 mm	16 mm	8421N17	0000


						76 mm Overall Length



										M5 × 0.8 mm	12 mm	5 mm	8421N19	0000


										M6 × 1 mm	16 mm	6 mm	8421N21	0000
										M8 × 1.25 mm	20 mm	8 mm	8421N22	0000
										M10 × 1.5 mm	25 mm	10 mm	8421N23	0000
										M12 × 1.75 mm	25 mm	12 mm	8421N24	0000


								100 mm Overall Length



										M6 × 1 mm	25 mm	6 mm	8421N29	0000


										M8 × 1.25 mm	30 mm	8 mm	8421N31	00000
										M10 × 1.5 mm	30 mm	10 mm	8421N32	00000
										M12 × 1.75 mm	40 mm	12 mm	8421N33	00000
										M14 × 2 mm	40 mm	14 mm	8421N34	00000
										M20 × 2.5 mm	40 mm	20 mm	8421N36	00000


150 mm Overall Length



										M5 × 0.8 mm	30 mm	5 mm	8421N37	00000


										M6 × 1 mm	40 mm	6 mm	8421N38	00000
										M8 × 1.25 mm	40 mm	8 mm	8421N39	00000
										M10 × 1.5 mm	50 mm	10 mm	8421N41	00000
										M12 × 1.75 mm	50 mm	12 mm	8421N42	00000
										M14 × 2 mm	50 mm	14 mm	8421N43	00000
										M16 × 2 mm	50 mm	16 mm	8421N44	00000
		M20 × 2.5 mm								50 mm	20 mm	8421N45	00000


		305 mm Overall Length



										M5 × 0.8 mm	30 mm	5 mm	8421N46	00000


										M8 × 1.25 mm	40 mm	8 mm	8421N48	00000
										M10 × 1.5 mm	50 mm	10 mm	8421N49	00000
										M12 × 1.75 mm	50 mm	12 mm	8421N51	00000
										M14 × 2 mm	50 mm	14 mm	8421N52	00000
				M20 × 2.5 mm						50 mm	20 mm	8421N54	00000


				455 mm Overall Length



										M5 × 0.8 mm	30 mm	5 mm	8421N55	00000


										M6 × 1 mm	40 mm	6 mm	8421N56	00000
										M8 × 1.25 mm	40 mm	8 mm	8421N57	00000
										M10 × 1.5 mm	50 mm	10 mm	8421N58	00000
						M12 × 1.75 mm				50 mm	12 mm	8421N59	00000


						610 mm Overall Length



										M6 × 1 mm	40 mm	6 mm	8421N65	00000


										M8 × 1.25 mm	40 mm	8 mm	8421N66	00000
										M10 × 1.5 mm	50 mm	10 mm	8421N67	00000
										M12 × 1.75 mm	50 mm	12 mm	8421N68	00000