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    50 Products

    Cap Nuts

    Conceal and protect protruding screw threads while fastening parts together. These nuts help prevent damage to surrounding materials and reduce injuries. Also known as acorn nuts, they have a smooth, rounded head that creates a finished look.
    Plastic
    Image of Product. Front orientation. Cap Nuts. Cap Nuts.
    Nylon 6/6—Slippery and abrasion resistant, these nuts thread on smoothly and stand up to daily wear and tear. Nylon will swell and weaken when exposed to moisture, so it's best for dry environments.
    Thread Size
    Wd.
    Ht.
    Temp. Range,
    ° F
    Choose a Color
    Pkg.
    Qty.
    Pkg.
    Nylon 6/6
    4-40
    		1/4"9/32"-40 to 185Black, Off-White10094922A300000000
    6-32
    		19/64"11/32"-40 to 185Black, Off-White10094922A30500000
    8-32
    		21/64"3/8"-40 to 185Black, Off-White10094922A31000000
    10-24
    		23/64"13/32"-40 to 185Black, Off-White10094922A31500000
    10-32
    		23/64"13/32"-40 to 185Black, Off-White10094922A32000000
    1/4"-20
    		27/64"15/32"-40 to 185Black, Off-White10094922A32500000
    1/4"-28
    		27/64"15/32"-40 to 185Black, Off-White10094922A33000000
    5/16"-18
    		1/2"17/32"-40 to 185Black, Off-White5094922A33500000
    5/16"-24
    		1/2"17/32"-40 to 185Black, Off-White5094922A34000000
    3/8"-16
    		9/16"5/8"-40 to 185Black, Off-White2594922A34500000
    3/8"-24
    		9/16"5/8"-40 to 185Black, Off-White2594922A35000000
    7/16"-14
    		3/4"13/16"-40 to 185Black, Off-White1094922A4300000
    1/2"-13
    		3/4"13/16"-40 to 185Black, Off-White2594922A35500000
    1/2"-20
    		3/4"13/16"-40 to 185Black, Off-White1094922A3600000
    5/8"-11
    		15/16"31/32"-40 to 185Black, Off-White2094922A36500000
    M4 × 0.7 mm7 mm8 mm-40 to 185Black, Off-White10090527A50500000
    M5 × 0.8 mm8 mm10 mm-40 to 185Black, Off-White10090527A51000000
    M6 × 1 mm10 mm12 mm-40 to 185Black, Off-White10090527A51500000
    M8 × 1.25 mm13 mm15 mm-40 to 185Black, Off-White5090527A52000000
    M10 × 1.5 mm17 mm18 mm-40 to 185Black, Off-White2590527A52500000
    M12 × 1.75 mm19 mm20.5 mm-40 to 185Black, Off-White2590527A53000000
     

    Caps for Hex Nuts

    Image of ProductInUse. Cap Installed on Hex Nut. Front orientation. CrossSection view. Protective Caps. Caps for Hex Nuts.

    Cap Installed on Hex

    Nut

    Image of Product. Front orientation. Protective Caps. Caps for Hex Nuts.
    Seal out moisture and dirt to prevent corrosion and buildup on threads. These caps snap onto hex nuts for a tight fit.
    Polyethylene—These tough caps are hard and wear resistant to hold up against scrapes and gouges.
    For Nut
    Wd.
    Inside
    Ht.
    Flexibility
    Max. Temp.,
    ° F
    Color
    Pkg.
    Qty.
    Pkg.
    Polyethylene
    7/16"29/64"Rigid170Black109267K5500000
    1/2"17/32"Rigid170Black109267K410000
    35/64"1/2"Rigid170Black109267K430000
    43/64"25/32"Rigid170Black109267K310000
    3/4"27/32"Rigid170Black109267K4500000
    7/8"15/16"Rigid170Black59267K320000
    15/16"1"Rigid170Black59267K4700000
    1 1/16"1"Rigid170Black59267K330000
    1 1/4"1 13/32"Rigid170Black59267K3400000
    1 13/32"1 7/16"Rigid170Black59267K3500000
    1 5/8"1 23/32"Rigid170Black19267K360000
    1 13/16"2"Rigid170Black19267K170000
    1 31/32"2 3/32"Rigid170Black19267K1800000
    2 3/16"2 19/64"Rigid170Black19267K5100000
    2 3/8"2 5/16"Rigid170Black19267K5200000
    2 9/16"2 19/64"Rigid170Black19267K5300000
    2 3/4"2 29/64"Rigid170Black19267K5400000
     

    Retaining Caps

    Image of Product. 1050 Spring Steel. Bottom orientation. Protective Caps. Retaining Caps.

    1050 Spring Steel

    Image of Product. Plastic. Bottom orientation. Protective Caps. Retaining Caps.

    Plastic

    Use these caps to hold components in place and protect shaft ends. Install these caps with a hammer or push them into place by hand.
    For
    OD
    OD
    Ht.
    Insert
    Material
    Min.
    Hardness
    Temp. Range,
    ° F
    Pkg.
    Qty.
    Pkg.
    Black Plastic
    5/32"21/32"23/64"SteelRockwell C45-90 to 1505090310A325000000
    3/16"21/32"23/64"SteelRockwell C45-90 to 1505090310A33500000
    1/4"27/32"7/16"SteelRockwell C45-90 to 1505090310A34500000
    5/16"27/32"29/64"SteelRockwell C45-90 to 1502590310A35500000
    3/8"55/64"15/32"SteelRockwell C45-90 to 1502590310A3780000
    7/16"53/64"7/16"SteelRockwell C45-90 to 1501090310A3720000
    1/2"1 5/16"41/64"SteelRockwell C45-90 to 1501090310A3730000
    5/8"1 5/16"41/64"SteelRockwell C45-90 to 1501090310A3740000
     
    White Plastic
    1/8"21/32"23/64"SteelRockwell C45-90 to 1501090310A31500000
    3/16"21/32"11/32"SteelRockwell C45-90 to 1502590310A3710000
    3/8"55/64"15/32"SteelRockwell C45-90 to 1502590310A3770000
     
    Red Plastic
    5/16"55/64"15/32"SteelRockwell C45-90 to 1502590310A3760000
     
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