Tight Tolerance Multipurpose Air Hardening A2 Tool Steel Rods

	System of Measurement System of Measurement

Inch

Metric

	Diameter Diameter

	Shape Shape

	Rod and Disc

	Material Material

Steel

	Mechanical Finish Mechanical Finish

Precision Ground

	Tolerance Rating Tolerance Rating

Tight

	Hardness Rating Hardness Rating

Medium

Hard

	Hardness Hardness

	Heat Treatment Heat Treatment

Annealed (Softened)

	Maximum Hardness After Heat Treatment Maximum Hardness After Heat Treatment

Rockwell C65

Rockwell C62

	Certificate Certificate

	Material Certificate with Traceable Lot Number

	Appearance Appearance

	Plain

	Specifications Met Specifications Met

ASTM

	Yield Strength Yield Strength

52,000 to 59,999 psi

Not Rated

	Fabrication Fabrication

Hot Rolled

	REACH (Registration, Evaluation, Authorization and Restriction of Chemicals) REACH (Registration, Evaluation, Authorization and Restriction of Chemicals)

REACH Compliant

	RoHS (Restriction of Hazardous Substances) RoHS (Restriction of Hazardous Substances)

RoHS Compliant

	Elongation Elongation

22.5%

	Overall Length Overall Length

73 Products

About Tool Steel

Precision ground and held to a strict straightness tolerance, these rods are ready for turning in your lathe. They’re also known as drill rod. A2 tool steel is more wear resistant than O1 and it keeps a sharper cutting edge. This air-hardening material is widely used for punches, broaches, and dies.

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.

Rods

Yield Strength: See Table
Hardness: See Table
Heat Treatable: Yes
Max. Hardness After Heat Treatment: See Table
Specifications Met: ASTM A681

Dia.	Dia. Tolerance	Yield Strength	Heat Treatment	Hardness	Max. Hardness After Heat Treatment	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
1/16"	-0.0003" to 0.0003"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	00000000	00000	00000	00000
5/64"	-0.0003" to 0.0003"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	0000
3/32"	-0.0003" to 0.0003"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	0000
7/64"	-0.0003" to 0.0003"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	0000
1/8"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	00000
9/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	00000
5/32"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	00000
11/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	00000
3/16"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	00000
13/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	0000	00000
7/32"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
15/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
1/4"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B104	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
17/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
9/32"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
19/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
5/16"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
21/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
11/32"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
23/64"	-0.0005" to 0.0005"	Not Rated	Annealed (Softened)	Rockwell B103	Rockwell C65	Precision Ground	0.005" per ft.	0000000	0000	00000	00000
3/8"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
25/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
13/32"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
27/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
7/16"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	0000	00000	00000
29/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	00000	00000	00000
15/32"	-0.0005" to 0.0005"	Not Rated	Annealed (Softened)	Rockwell B103	Rockwell C65	Precision Ground	0.005" per ft.	0000000	0000	00000	00000
31/64"	-0.0005" to 0.0005"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	00000000	00000	00000	00000
1/2"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
17/32"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
9/16"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
19/32"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
5/8"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	00000
21/32"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
11/16"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
23/32"	-0.0005" to 0.0005"	Not Rated	Annealed (Softened)	Rockwell B103	Rockwell C65	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
3/4"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
13/16"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
7/8"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B101	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	00000	000000
15/16"	-0.0005" to 0.0005"	Not Rated	Annealed (Softened)	Rockwell B103	Rockwell C65	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 1/16"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 1/8"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 1/4"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 3/8"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 1/2"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	00000	000000	000000
1 3/4"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2 1/4"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2 1/2"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
2 3/4"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	000000	000000	000000
3"	-0.001" to 0.001"	55,000 psi	Annealed (Softened)	Rockwell B110	Rockwell C62	Precision Ground	0.005" per ft.	0000000	000000	000000	00000000

Metric Rods

Yield Strength: 55,000 psi
Hardness: Rockwell B90 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C62
Specifications Met: ASTM A681

Dia., mm	Dia. Tolerance, mm	Heat Treatment	Mechanical Finish	Straightness Tolerance		1 ft. Lg.	3 ft. Lg.	6 ft. Lg.
2	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
3	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	0000	00000
4	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	0000	00000
5	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	00000	00000
6	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	00000	00000
7	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	0000	00000	00000
8	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
9	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
10	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
11	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
12	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	00000
13	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
14	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
15	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
16	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
17	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	00000	000000
18	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000
19	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000
20	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000
22	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000
25	-0.025 to 0.025	Annealed (Softened)	Precision Ground	0.0125" per ft.	0000000	00000	000000	000000

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About Tool Steel

Tight-Tolerance Multipurpose Air-Hardening A2 Tool Steel Rods