0.0781" Shafts | McMaster-Carr

These rods, also known as drill blanks, have an undersized diameter for machining your own drill bits. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

Dia.	Dia. Tolerance	Drill Bit Size	Lg.	Yield Strength	Mechanical Finish	Straightness Tolerance		Each
0.0781"	-0.0002" to 0"	5/64"	2"	Not Rated	Precision Ground	0.012" per ft.	00000000	00000

Hardened Oversized High-Speed M2 Tool Steel Rods

Yield Strength: Not Rated
Hardness: Rockwell C60 (Very Hard)

Also known as reamer blanks, these rods have an oversized diameter that allows for finishing to your exact requirements. They're hardened for increased abrasion and impact resistance. M2 tool steel offers a nice balance of wear resistance and machinability. It has a high molybdenum content, which allows it to maintain sharp cutting edges even at elevated temperatures.

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

Dia.	Dia. Tolerance	Reamer Size	Lg.	Lg. Tolerance	Mechanical Finish	Straightness Tolerance		Each
0.0781"	0" to 0.0002"	5/64"	2"	-1/32" to 1/32"	Precision Ground	0.012" per ft.	00000000	00000

Tight-Tolerance Easy-to-Machine W1 Tool Steel Rods

Yield Strength: 50,000 psi
Hardness: Rockwell B95 (Medium)
Heat Treatable: Yes
Max. Hardness After Heat Treatment: Rockwell C65
Fabrication: Hot Rolled
Specifications Met: ASTM A686

Made with lower amounts of alloy elements than other tool steels, these W1 rods are highly machinable. Also called drill rods, they are precision ground and held to strict diameter and straightness tolerances. They’re ready to be turned on a lathe. These rods are decarb-free, which means any surface flaws created during the manufacturing process have been removed. This makes them more machinable and leads to better results from heat treating or finishing. You can harden the surface with heat treating for added wear resistance or water harden for added strength. These rods are often used to make hammers, files, and reamers. All have been manufactured to meet ASTM A686 standards for quality and performance.

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

Dia.	Dia. Tolerance	Drill Bit Size	Heat Treatment	Mechanical Finish	Straightness Tolerance		3 ft. Lg.	6 ft. Lg.
0.0781"	-0.000300" to 0.00030"	5/64"	Annealed (Softened)	Precision Ground	0.005" per ft.	00000000	00000	00000