Rockwell C21 Steel | McMaster-Carr

Filter by

Diameter

Shape

Heat Treatment

Length

Material

Mechanical Finish

Hardness Rating

Specifications Met

End Type

Certificate Type

Material Certificate with Traceable Lot Number

System of Measurement

Hardness

Rockwell C48 to Rockwell C51

Fabrication

DFARS Specialty Metals

Tolerance Rating

Maximum Temperature

Yield Strength

40,000 psi to 99,999 psi

Edge Type

Thickness

Appearance

REACH

Export Control Classification Number (ECCN)

RoHS

Shaft Motion

Width

Minimum Temperature

34 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.

About Shafts

Yield Strength: 80,000 psi
Hardness: Rockwell C21 (Hard)
Fabrication: See table
Specifications Met: ASTM A506, SAE AMS2301

The surface of this 4130 alloy steel is hardened, so it resists impact and abrasion better than standard 4130 alloy steel. Also known as chrome-moly steel, it has a low carbon content for good weldability. 4130 alloy steel is often used for pressure vessels and structural supports. These sheets have been manufactured to meet SAE and ASTM standards for quality and performance.

For technical drawings and 3-D models, click on a part number.

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

			12" × 12"		24" × 24"		36" × 36"
Thick.	Thick. Tolerance	Fabrication		Each		Each		Each
0.063"	-0.009" to 0.009"	Cold Worked	00000000	000000	00000000	0000000	00000000	0000000
0.1"	-0.009" to 0.009"	Cold Worked	00000000	00000	00000000	000000	00000000	000000
1/8"	-0.009" to 0.009"	Cold Worked	00000000	00000	00000000	000000	00000000	000000
1/4"	-0.009" to 0.009"	Hot Rolled	00000000	00000	00000000	000000	00000000	000000

Easy-to-Weld 4130 Alloy Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C21 (Hard)
Fabrication: See table
Specifications Met: See table

Made from 4130 alloy steel, also known as chrome-moly steel, these rods have low carbon content for good weldability. They’re often used to make gears and bushings. The surface of these rods is hardened to make them more resistant to wear and impacts. They’re also normalized, which is a heating process that relieves internal stress and helps prevent cracking during machining or additional hardening. These rods have been manufactured to ASTM and SAE standards for quality and performance.

For technical drawings and 3-D models, click on a part number.

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

Dia.	Dia. Tolerance	Fabrication	Heat Treatment	Mechanical Finish	Specifications Met		1/2 ft. Lg.	1 ft. Lg.	2 ft. Lg.	3 ft. Lg.	4 ft. Lg.	6 ft. Lg.	8 ft. Lg.	12 ft. Lg.
3/8"	-0.004" to 0"	Cold Worked	Hardened, Normalized	__	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	00000	000000	000000	000000	000000	000000	00
1/2"	-0.004" to 0"	Cold Worked	Hardened, Normalized	__	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	0000	00000	00000	00000	00000	00000	000000
5/8"	-0.004" to 0"	Cold Worked	Hardened, Normalized	__	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	00000	00000	00000	00000	00000	00000	00
3/4"	-0.004" to 0"	Cold Worked	Hardened, Normalized	__	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	00000	00000	00000	00000	00000	00000	00
7/8"	-0.004" to 0"	Cold Worked	Hardened, Normalized	__	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	000000	00000	00000	00000	00	000000	00	00
1"	-0.004" to 0"	Cold Worked	Hardened, Normalized	__	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	00000	00000	00000	00000	000000	000000	00
1 1/8"	-0.004" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	00000	00000	00000	00	000000	00	00
1 1/4"	-0.004" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	00000	00000	00000	00	000000	00	00
1 3/8"	-0.004" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	00000	00	000000	00	000000	00	00
1 1/2"	-0.004" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	00000	00000	000000	00	000000	00	00
1 5/8"	-0.005" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	00000	00	000000	00	00	00	00
1 3/4"	-0.005" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	00000	00	000000	00	000000	00	00
2"	-0.005" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	00000	000000	000000	00	000000	00	00
2 1/4"	-0.005" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00	000000	00	000000	00	00	00	00
2 1/2"	-0.005" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	000000	00	000000	00	000000	00	00
2 3/4"	-0.006" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	00000000	00	000000	00	00	00	00	00	00
3"	-0.006" to 0"	Cold Worked	Hardened, Normalized	Turned and Polished	ASTM A108, SAE AMS2301, SAE AMS6348	0000000	00000	000000	00	000000	00	000000	00	00
4"	0" to 0.063"	Hot Rolled	Hardened, Normalized	__	ASTM A29, SAE AMS2301, SAE AMS6348	00000000	000000	000000	00	000000	00	00	00	00
6"	0" to 0.125"	Hot Rolled	Hardened, Normalized	__	ASTM A29, SAE AMS2301, SAE AMS6348	00000000	000000	000000	00	00000000	00	00	00	00

Rotary Shafts

Combine these general purpose drive shafts with gears, sprockets, and bearings to transmit rotary motion. All are turned, precision ground, and polished to meet tight diameter and straightness tolerances. This means these shafts evenly distribute loads, reduce vibration, and improve accuracy and stability.

Stainless steel shafts are more corrosion resistant than steel shafts but more difficult to machine. 316 stainless steel shafts are the most corrosion resistant stainless steel shaft.

For technical drawings and 3-D models, click on a part number.

Inch—316 Stainless Steel
Lg.	Lg. Tolerance	Straightness Tolerance	Edge Type	Hardness Rating	Hardness		Each
1/4" Dia. (Tolerance: -0.001" to 0")
18"	-0.0625" to 0.0625"	0.003" per ft.	Straight	Hard	Rockwell C21	0000000	000000
36"	-0.0625" to 0.0625"	0.003" per ft.	Straight	Hard	Rockwell C21	0000000	00000
60"	-0.0625" to 0.0625"	0.003" per ft.	Straight	Hard	Rockwell C21	0000000	000000

Email Us

About Shafts

Hardened Easy-to-Weld 4130 Alloy Steel Sheets

Easy-to-Weld 4130 Alloy Steel Rods

Rotary Shafts