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    10 Products

    Machine Key Stock

    Cut this square or rectangular key stock to length to create a straight machine key. Straight keys are the most common type of key. Machine keys are often the same material as the shaft and other components with which they are used. To use a key as a sacrificial part, choose a softer key that will shear off when parts are exposed to excessive force, preventing damage to expensive equipment.
    400 Nickel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    400 nickel key stock is the most corrosion resistant key stock in our offering and can be used in highly corrosive environments, such as those involving salt water, sulfuric acid, and alkalies. For complete corrosion resistance, 400 nickel keys are typically used with 400 nickel machine parts. Comparable to Monel, 400 nickel is also known for its strength and weldability.
    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. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    Tolerance
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Each
    12" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N19000000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1300000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1100000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N15000000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N17000000
     
    36" Long
    1/8" × 1/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N21000000
    3/16" × 3/16"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N1400000
    1/4" × 1/4"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N12000000
    3/8" × 3/8"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N16000000
    1/2" × 1/2"Undersized-0.002" to 0.000"-0.002" to 0.000"Rockwell B614428N18000000
     
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