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    9 Products

    Undersized Machine Key Assortments

    Image of Product. Front orientation. Machine Keys. Undersized Machine Key Assortments.
    Since they fit more loosely than standard keys, these undersized keys are best for uneven keyways or when you need to disassemble parts frequently, such as during maintenance or prototyping. Made of steel, all keys offer good strength.
    Straight Key
    Image of Specification. Front orientation. Straight Key. Undersized Machine Key Assortments.

    Straight Key

    Zinc-Plated 1008-1045 Carbon Steel and Zinc-Plated Steel—Zinc-plated keys resist corrosion in wet environments.
    No. of
    Pieces
    Straight Keys Included
    Key Size
    Tolerance
    Container
    Type
    Each
    1008-1045 Carbon Steel
    584 mm × 4 mm × 25 mm Lg. (12 Pieces)
    5 mm × 5 mm × 20 mm Lg. (12 Pieces)
    5 mm × 5 mm × 25 mm Lg. (12 Pieces)
    6 mm × 6 mm × 20 mm Lg. (8 Pieces)
    7 mm × 8 mm × 20 mm Lg. (8 Pieces)
    7 mm × 8 mm × 32 mm Lg. (6 Pieces)    		-0.09 mm to 0 mmPlastic Box0000000000000
     
    Zinc-Plated 1008-1045 Carbon Steel
    581/8" × 1/8" × 3/4" Lg. (3 Pieces)
    1/8" × 1/8" × 1" Lg. (3 Pieces)
    3/16" × 3/16" × 3/4" Lg. (5 Pieces)
    3/16" × 3/16" × 1" Lg. (5 Pieces)
    3/16" × 3/16" × 1 1/4" Lg. (5 Pieces)
    1/4" × 1/4" × 3/4" Lg. (5 Pieces)
    1/4" × 1/4" × 1 1/4" Lg. (5 Pieces)
    1/4" × 1/4" × 1 1/2" Lg. (5 Pieces)
    5/16" × 5/16" × 1 1/4" Lg. (5 Pieces)
    5/16" × 5/16" × 1 1/2" Lg. (5 Pieces)
    3/8" × 3/8" × 1 1/4" Lg. (5 Pieces)
    3/8" × 3/8" × 1 1/2" Lg. (5 Pieces)
    1/2" × 1/2" × 1 1/2" Lg. (2 Pieces)    		-0.003" to 0"Plastic Box000000000000000
     
    Zinc-Plated Steel
    3001/8" × 1/8" × 3/4" Lg. (25 Pieces)
    1/8" × 1/8" × 1" Lg. (25 Pieces)
    3/16" × 3/16" × 3/4" Lg. (25 Pieces)
    3/16" × 3/16" × 1" Lg. (25 Pieces)
    3/16" × 3/16" × 1-1/4" Lg. (25 Pieces)
    3/16" × 3/16" × 1-1/2" Lg. (25 Pieces)
    1/4" × 1/4" × 3/4" Lg. (25 Pieces)
    1/4" × 1/4" × 1-1/4" Lg. (25 Pieces)
    1/4" × 1/4" × 1" Lg. (25 Pieces)
    1/4" × 1/4" × 1-1/2" Lg. (25 Pieces)
    5/16" × 5/16" × 1-1/4" Lg. (25 Pieces)
    5/16" × 5/16" × 1-1/2" Lg. (25 Pieces)    		-0.002" to 0"Plastic Box000000000000000
     
    Rounded Key
    Image of Attribute. Front orientation. Rounded Key. Undersized Machine Key Assortments.

    Rounded keys fill oval keyways completely, reducing stress on the key and shaft. In closed keyways, these keys won’t slide along the shaft. Their rounded ends also make it easy to slide gears, hubs, and other components into place.
    Zinc-Plated Steel—Zinc-plated keys resist corrosion in wet environments.
    No. of
    Pieces
    Rounded Keys Included
    Key Size
    Tolerance
    Container
    Type
    Each
    1008-1045 Carbon Steel
    251/8" × 1/8" × 3/4" Lg. (2 Pieces)
    1/8" × 1/8" × 1" Lg. (3 Pieces)
    3/16" × 3/16" × 3/4" Lg. (3 Pieces)
    3/16" × 3/16" × 1" Lg. (3 Pieces)
    3/16" × 3/16" × 1 1/2" Lg. (2 Pieces)
    1/4" × 1/4" × 3/4" Lg. (2 Pieces)
    1/4" × 1/4" × 1" Lg. (3 Pieces)
    1/4" × 1/4" × 1 1/4" Lg. (2 Pieces)
    1/4" × 1/4" × 1 1/2" Lg. (1 Piece)
    5/16" × 5/16" × 1" Lg. (1 Piece)
    5/16" × 5/16" × 1 1/2" Lg. (1 Piece)
    3/8" × 3/8" × 1" Lg. (1 Piece)
    3/8" × 3/8" × 1 1/2" Lg. (1 Piece)    		-0.002" to 0"—0000000000000
    583/16" × 3/16" × 3/4" Lg. (9 Pieces)
    3/16" × 3/16" × 1" Lg. (9 Pieces)
    1/4" × 1/4" × 3/4" Lg. (8 Pieces)
    1/4" × 1/4" × 1" Lg. (7 Pieces)
    1/4" × 1/4" × 1 1/4" Lg. (7 Pieces)
    1/4" × 1/4" × 1 1/2" Lg. (6 Pieces)
    5/16" × 5/16" × 1" Lg. (3 Pieces)
    5/16" × 5/16" × 1 1/2" Lg. (3 Pieces)
    3/8" × 3/8" × 1" Lg. (3 Pieces)
    3/8" × 3/8" × 1 1/2" Lg. (3 Pieces)    		-0.002" to 0"Plastic Box000000000000
     
    Zinc-Plated Steel
    254 mm × 4 mm × 80 mm Lg. (2 Pieces)
    5 mm × 5 mm × 80 mm Lg. (3 Pieces)
    6 mm × 6 mm × 80 mm Lg. (2 Pieces)
    7 mm × 7 mm × 80 mm Lg. (2 Pieces)
    8 mm × 7 mm × 80 mm Lg. (2 Pieces)
    8 mm × 8 mm × 80 mm Lg. (3 Pieces)
    10 mm × 8 mm × 80 mm Lg. (2 Pieces)
    10 mm × 10 mm × 80 mm Lg. (2 Pieces)
    12 mm × 8 mm × 80 mm Lg. (2 Pieces)
    12 mm × 12 mm × 80 mm Lg. (2 Pieces)
    16 mm × 10 mm × 80 mm Lg. (1 Piece)
    18 mm × 11 mm × 80 mm Lg. (1 Piece)
    20 mm × 12 mm × 80 mm Lg. (1 Piece)    		-0.03 mm to 0 mmPlastic Box000000000000000
    584 mm × 4 mm × 40 mm Lg. (8 Pieces)
    5 mm × 5 mm × 40 mm Lg. (8 Pieces)
    6 mm × 6 mm × 40 mm Lg. (10 Pieces)
    8 mm × 7 mm × 40 mm Lg. (4 Pieces)
    8 mm × 8 mm × 40 mm Lg. (10 Pieces)
    10 mm × 8 mm × 40 mm Lg. (4 Pieces)
    10 mm × 10 mm × 40 mm Lg. (4 Pieces)
    12 mm × 12 mm × 40 mm Lg. (4 Pieces)
    14 mm × 9 mm × 40 mm Lg. (4 Pieces)
    16 mm × 10 mm × 40 mm Lg. (2 Pieces)    		-0.03 mm to 0 mmPlastic Box00000000000000
     

    Undersized Key Stock Assortments

    Image of Product. Front orientation. Machine Keys. Undersized Key Stock Assortments.
    Image of Product. Front orientation. ZoomedIn view. Machine Keys. Undersized Key Stock Assortments.
    Cut keys to custom lengths. This key stock is undersized, so keys will fit slightly more loosely than standard keys and are best for inconsistent keyways. Use undersized keys when parts need to be taken apart frequently, such as for maintenance or prototyping. Either zinc- or zinc yellow-chromate plated, this key stock resists corrosion in wet environments.
    No. of
    Pieces
    Straight Keys Included
    Key Size
    Tolerance
    Container
    Type
    Each
    Zinc-Plated 1008-1045 Carbon Steel
    311/8" × 1/8" × 12" Lg. (5 Pieces)
    3/16" × 3/16" × 12" Lg. (5 Pieces)
    1/4" × 1/4" × 12" Lg. (5 Pieces)
    5/16" × 5/16" × 12" Lg. (5 Pieces)
    3/8" × 3/8" × 12" Lg. (5 Pieces)
    7/16" × 7/16" × 12" Lg. (3 Pieces)
    1/2" × 1/2" × 12" Lg. (3 Pieces)    		-0.002" to 0"Cardboard Box0000000000000
     
    Zinc-Yellow-Chromate-Plated 1008-1045 Carbon Steel
    314 mm × 4 mm × 305 mm Lg. (5 Pieces)
    5 mm × 5 mm × 305 mm Lg. (5 Pieces)
    6 mm × 6 mm × 305 mm Lg. (5 Pieces)
    7 mm × 7 mm × 305 mm Lg. (5 Pieces)
    8 mm × 8 mm × 305 mm Lg. (5 Pieces)
    10 mm × 10 mm × 305 mm Lg. (3 Pieces)
    12 mm × 12 mm × 305 mm Lg. (3 Pieces)    		-0.043 mm to 0 mmCardboard Box000000000000
     
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