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    189 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.
    1008-1045 Carbon Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    1008-1045 carbon steel key stock is an economical choice with good strength.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 688000000000000000
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 68800000000000000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    4 mm × 7 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    5 mm × 8 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    6 mm × 12 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    6 mm × 14 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    7 mm × 18 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    8 mm × 20 mmUndersized-0.090 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    18 mm × 18 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B87DIN 688000000000000000
    20 mm × 20 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    20 mm × 36 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688000000000000000
    22 mm × 22 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    22 mm × 40 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688000000000000000
    25 mm × 45 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688000000000000000
    28 mm × 50 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 688000000000000000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 68800000000000000
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B87DIN 68800000000000000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B87DIN 688000000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B87DIN 688000000000000000
    4 mm × 7 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    5 mm × 8 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688000000000000000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    6 mm × 12 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    6 mm × 14 mmUndersized-0.075 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 6880000000000000000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 6880000000000000000
    18 mm × 18 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B87DIN 6880000000000000000
    20 mm × 20 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    20 mm × 36 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 6880000000000000000
    22 mm × 22 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 6880000000000000000
    22 mm × 40 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 6880000000000000000
    25 mm × 45 mmUndersized-0.130 to 0.000-0.062 to 0.000Rockwell B87DIN 6880000000000000000
     
    Zinc-Plated 1008-1045 Carbon Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    Zinc-plated 1008-1045 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. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    18 mm × 18 mmUndersized-0.043 to 0.000-0.043 to 0.000Not RatedDIN 6880000000000000000
     
    Zinc-Yellow-Chromate-Plated 1045 Carbon Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    Zinc-yellow-chromate-plated 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. Use it when parts need to be taken apart frequently, such as for maintenance or prototyping.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 688000000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    5 mm × 8 mmUndersized-0.070 to 0.000-0.040 to 0.000Rockwell B87DIN 688000000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B87DIN 68800000000000000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 68800000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 68800000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    11 mm × 18 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B87DIN 688000000000000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B87DIN 688000000000000000
    20 mm × 20 mmUndersized-0.052 to 0.000-0.052 to 0.000Rockwell B87DIN 688000000000000000
     
    4140 Alloy Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    4140 alloy steel key stock is an economical choice with good strength. 4140 alloy steel key stock has greater strength and toughness after hardening than carbon steel, making it useful for high-stress applications.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B90DIN 688000000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 68800000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 68800000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 68800000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B90DIN 68800000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B90DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B90DIN 68800000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 68800000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688000000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B90DIN 688000000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B90DIN 688000000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B90DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B90DIN 688000000000000000
     
    18-8 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    18-8 stainless steel key stock offers a balance of strength and corrosion resistance. It may be mildly magnetic. 18-8 stainless steel key stock is more corrosion resistant than steel key stock.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    3 mm × 3 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 6880000000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 688000000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 68800000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Not RatedDIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Not RatedDIN 688000000000000000
     
    304 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    304 stainless steel key stock offers a good balance of strength, corrosion resistance, and machinability. 304 stainless steel key stock is more corrosion resistant than steel key stock.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B80DIN 6880000000000000000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B80DIN 688000000000000000
    6 mm × 10 mmUndersized-0.030 to 0.000-0.036 to 0.000Rockwell B80DIN 688000000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B80DIN 688000000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B80DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B80DIN 688000000000000000
     
    1,000 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B80DIN 688000000000000000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B80DIN 688000000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B80DIN 688000000000000000
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B80DIN 688000000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B80DIN 688000000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B80DIN 688000000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B80DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688000000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B80DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B80DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B80DIN 6880000000000000000
     
    316 Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    316 stainless steel key stock has the best corrosion resistance of our stainless steel key stock and may be mildly magnetic. 316 stainless steel key stock is more corrosion resistant than steel key stock.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    4 mm × 6 mmUndersized-0.075 to 0.000-0.030 to 0.000Rockwell B85DIN 6880000000000000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 6880000000000000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 6880000000000000000
    18 mm × 32 mmUndersized-0.110 to 0.000-0.062 to 0.000Rockwell B85DIN 6880000000000000000
     
    1,000 mm Long
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B85DIN 688000000000000000
    3 mm × 5 mmUndersized-0.060 to 0.000-0.030 to 0.000Rockwell B85DIN 688000000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B85DIN 688000000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B85DIN 688000000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B85DIN 688000000000000000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688000000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B85DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688000000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B85DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B85DIN 688000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    11 mm × 18 mmUndersized-0.110 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B85DIN 6880000000000000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 6880000000000000000
    14 mm × 25 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 6880000000000000000
    16 mm × 28 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B85DIN 6880000000000000000
     
    316-316L Stainless Steel
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    316-316L stainless steel key stock has the best corrosion resistance of our stainless steel key stock and may be mildly magnetic. 316-316L stainless steel key stock is more corrosion resistant than steel key stock.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    2 mm × 2 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B86DIN 688000000000000000
    3 mm × 3 mmUndersized-0.025 to 0.000-0.025 to 0.000Rockwell B86DIN 68800000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B86DIN 68800000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B86DIN 68800000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B86DIN 68800000000000000
    7 mm × 7 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688000000000000000
    7 mm × 8 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B86DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688000000000000000
    8 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688000000000000000
    8 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    9 mm × 14 mmUndersized-0.090 to 0.000-0.036 to 0.000Rockwell B86DIN 688000000000000000
    10 mm × 10 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B86DIN 688000000000000000
    10 mm × 12 mmUndersized-0.036 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    10 mm × 16 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    11 mm × 18 mmUndersized-0.090 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    12 mm × 12 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    12 mm × 20 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B86DIN 688000000000000000
    14 mm × 14 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
    14 mm × 22 mmUndersized-0.110 to 0.000-0.052 to 0.000Rockwell B86DIN 688000000000000000
    16 mm × 16 mmUndersized-0.043 to 0.000-0.043 to 0.000Rockwell B86DIN 688000000000000000
     
    360 Brass
    Image of Product. Front orientation. Machine Key Stock. Machine Key Stock.
    360 brass key stock is corrosion resistant and nonmagnetic. 360 brass is softer than other metals, so it's often used for shear keys.
    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.
    DIN 6880—Key stock that meets DIN 6880 conforms to DIN standards for undersized keys.
    Tolerance,
    mm
    Ht. × Wd.
    Tolerance
    Rating
    Ht.
    Wd.
    Min.
    Hardness
    Specs.
    Met
    Each
    305 mm Long
    3 mm × 3 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 6880000000000000000
    4 mm × 4 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688000000000000000
    5 mm × 5 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688000000000000000
    6 mm × 6 mmUndersized-0.030 to 0.000-0.030 to 0.000Rockwell B35DIN 688000000000000000
    8 mm × 8 mmUndersized-0.036 to 0.000-0.036 to 0.000Rockwell B35DIN 688000000000000000
     
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