Zinc-Plated Carbon Steel Step Machine Key Stock
for Shafts, 7/8" Wide x 7/16" High Shaft Keyway, Undersized







Key Type | Step |
For Use With | Shafts |
Material | Zinc-Plated 1018-1045 Carbon Steel |
Length | 12" |
For Hub Keyway | |
Width (A) | 3/4" |
Height (B) | 3/8" |
Width (A) Tolerance | -0.003" to 0" |
Height (B) Tolerance | -0.005" to 0.005" |
For Shaft Keyway | |
Width (C) | 7/8" |
Height (D) | 7/16" |
Width (C) Tolerance | -0.003" to 0.000" |
Height (D) Tolerance | -0.005" to 0.005" |
Height | 13/16" |
Tolerance Rating | Undersized |
Tolerance | |
Height | -0.090" to 0.010" |
Length | -0.125" to 0.000" |
Minimum Hardness | Rockwell B50 |
System of Measurement | Inch |
Country of Origin | United States |
DFARS Compliance | Specialty Metals COTS-Exempt |
Export Control Classification Number (ECCN) | EAR99 |
REACH Compliance | REACH (EC 1907/2006) (06/27/2024, 241 SVHC) Compliant |
RoHS Compliance | RoHS 3 (2015/863/EU) Compliant |
Schedule B Number | 731824.0000 |
U.S.–Mexico–Canada Agreement (USMCA) Qualifying | No |
When a keyway is damaged, cut a new, wider one. This key stock is stepped to match repaired keyways in shafts or gears. Cut it to length to create the machine key you need.
Zinc-Plated 1018-1045 Carbon Steel—Zinc-plated 1018-1045 carbon steel key stock is an economical choice with good strength and resists corrosion in wet environments.
Undersized Tolerance—Slightly smaller than the size listed in the table, undersized stock is the choice when you need a slightly looser fit or when you have an inconsistent keyway.
The information in this 3-D model is provided for reference only.

























