Key Stock,3 ft L,Steel,3/8 in W, System of Measurement Inch, Material Steel, Material Grade/Class Grade 1018/Grade 1045, Finish Zinc Plated, Height 3/8 in, Thickness Tolerance +0.000/-0.002 in, Length 3 ft, Length Tolerance +0.000/-0.125 in, Width 3/8 in, Width Tolerance +0.000/-0.002 in, Pack Size Small Pack, Made in North America Yes, Properties Corrosion Resistant, Key Shape Straight, Rockwell Hardness HRB 50, Features Corrosion Resistant, Tensile Strength 70,000 psi Form, forge, or machine a key with this undersized key stock. It is marginally smaller than the stated size for a looser fit. It does not require filing.

O1 Tool Steel Rod, Material Tool Steel, Material Grade O1, Overall Length 36 in, Heat Treatable Yes, Heat Treatment Oil Hardened, Mechanical Finish Precision Ground, Outside Diameter 7/64 in, Outside Diameter Tolerance +/-0.0003 in, Yield Strength 55,000 psi, Fabrication Hot Rolled, Rockwell Hardness B100, Brinell Hardness 341, Tensile Strength 95,000 psi, Machinability 90 Percent, Length Tolerance +1/8 in/-0 in, Includes Material Certificate Yes Nonshrinking, general-purpose electric furnace melt oil-hardening steel tool is supplied with a fully spheroidized structure. Provides excellent abrasion resistance, toughness, and features machinability characteristics.