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Cap Nuts

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Cap Nuts, also known as a Blind Nut or a Crown Nut, is a nut that has a domed end on one side. The Domed Cap Nut is used to cover exposed threaded stud, rod and bolt ends with a dome-like cap. This offers protection and safety to the fastening assembly, while also creating a finished appearance to the exposed threaded end.

Our range is made up from Hex Cap Dome Nuts that feature a hexagonal nut shape with the dome or cap that encloses external threads. They are offered with or without a molded-in locking thread for applications which require torque for a more secure assembly.

  • Material: Nylon 6/6
  • Colors: Natural and Black
  • Flame resistance rating UL94 V2.

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71 results
Product SKUs information
Item Code Price range Availability Thread Size Distance Across Flats Color Nut Form Overall Height View
$0.2823 - $0.3873 500 In stock
M12 x 1.75
0.744 in
Black
Domed
0.807 in
$0.6953 - $0.8111 Request the lead time here
M20 x 2.5
1.051 in
Black
Domed
1.146 in
$0.0645 - $0.0884 2000 In stock
#10-32
0.365 in
Natural
0.400 in
$0.0587 - $0.0804 5000 In stock
#4-40
0.250 in
Natural
0.280 in
$0.1961 - $0.269 4500 In stock
3/8-16
0.565 in
Natural
0.620 in
0537516CN $0.2343 - $0.2732 30000 In stock
3/8-16
0.565 in
Natural
Domed
0.620 in
$0.1536 - $0.2108 12000 In stock
5/16-18
0.500 in
Natural
0.530 in
$0.0625 - $0.0858 11000 In stock
#8-32
0.330 in
Natural
0.375 in
$0.0459 - $0.0628 16500 In stock
1/4-20
0.425 in
Natural
0.475 in
$0.0984 - $0.135 18000 In stock
5/16-18
0.500 in
Black
Domed
0.530 in
$0.2576 - $0.3007 Request the lead time here
3/8-16
0.565 in
Black
Domed
0.620 in
$0.0504 - $0.0691 Request the lead time here
1/4-20
0.425 in
Black
0.475 in
$0.157 - $0.1833 4000 In stock
3/8-24
0.565 in
Natural
Domed
0.620 in
$0.2565 - $0.3518 500 In stock
1/2-20
0.750 in
Natural
Domed
0.810 in
$0.0987 - $0.2247 46000 In stock
#10-32
0.365 in
Black
0.400 in
0525020CNB $0.0504 - $0.0691 11000 In stock
1/4-20
0.425 in
Black
Domed
0.475 in
0531218CN $0.0895 - $0.1228 2500 In stock
5/16-18
0.500 in
Natural
Domed
0.530 in
$0.1833 - $0.417 2000 In stock
3/8-32
0.565 in
Black
Domed
0.620 in
0550013CNB $0.2822 - $0.387 10000 In stock
1/2-13
0.750 in
Black
Domed
0.810 in
$0.0875 - $0.1021 2000 In stock
M4 x 0.7
0.276 in
Natural
Domed
0.315 in
  • of 4
Hexagonal Cap Nut - Thread Size M12 x 1.75; Distance Across Flats 18.9 mm | 0.744 in; Overall Height 20.5 mm | 0.807 in; Black; Nylon 6/6

05M120175CNB

Price Range
$0.3873 - $0.2823

Stock Levels
500 In stock
Attributes
  • Overall Height
    0.807 in
  • Distance Across Flats
    0.744 in
  • Thread Size
    M12 x 1.75
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size M20 x 2.5; Distance Across Flats 26.7 mm | 1.051 in; Overall Height 29.1 mm | 1.146 in; Black; Nylon 6/6

05M200250CNB

Price Range
$0.8111 - $0.6953

Stock Levels
Request the lead time here
Attributes
  • Overall Height
    1.146 in
  • Distance Across Flats
    1.051 in
  • Thread Size
    M20 x 2.5
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size #10-32; Distance Across Flats 9.3 mm | 0.365 in; Overall Height 10.2 mm | 0.400 in; Natural; Nylon 6/6

0501032LCN

Price Range
$0.0884 - $0.0645

Stock Levels
2000 In stock
Attributes
  • Overall Height
    0.400 in
  • Distance Across Flats
    0.365 in
  • Thread Size
    #10-32
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size #4-40; Distance Across Flats 6.4 mm | 0.250 in; Overall Height 7.1 mm | 0.280 in; Natural; Nylon 6/6

0500440LCN

Price Range
$0.0804 - $0.0587

Stock Levels
5000 In stock
Attributes
  • Overall Height
    0.280 in
  • Distance Across Flats
    0.250 in
  • Thread Size
    #4-40
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 3/8-16; Distance Across Flats 14.4 mm | 0.565 in; Overall Height 15.7 mm | 0.620 in; Natural; Nylon 6/6

0537516LCN

Price Range
$0.269 - $0.1961

Stock Levels
4500 In stock
Attributes
  • Overall Height
    0.620 in
  • Distance Across Flats
    0.565 in
  • Thread Size
    3/8-16
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 3/8-16; Distance Across Flats 14.4 mm | 0.565 in; Overall Height 15.7 mm | 0.620 in; Natural; Nylon 6/6

0537516CN

Price Range
$0.2732 - $0.2343

Stock Levels
30000 In stock
Attributes
  • Overall Height
    0.620 in
  • Distance Across Flats
    0.565 in
  • Thread Size
    3/8-16
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 5/16-18; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 13.5 mm | 0.530 in; Natural; Nylon 6/6

0531218LCN

Price Range
$0.2108 - $0.1536

Stock Levels
12000 In stock
Attributes
  • Overall Height
    0.530 in
  • Distance Across Flats
    0.500 in
  • Thread Size
    5/16-18
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size #8-32; Distance Across Flats 8.4 mm | 0.330 in; Overall Height 9.5 mm | 0.375 in; Natural; Nylon 6/6

0500832LCN

Price Range
$0.0858 - $0.0625

Stock Levels
11000 In stock
Attributes
  • Overall Height
    0.375 in
  • Distance Across Flats
    0.330 in
  • Thread Size
    #8-32
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/4-20; Distance Across Flats 10.8 mm | 0.425 in; Overall Height 12.1 mm | 0.475 in; Natural; Nylon 6/6

0525020LCN

Price Range
$0.0628 - $0.0459

Stock Levels
16500 In stock
Attributes
  • Overall Height
    0.475 in
  • Distance Across Flats
    0.425 in
  • Thread Size
    1/4-20
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 5/16-18; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 13.5 mm | 0.530 in; Black; Nylon 6/6

0531218CNB

Price Range
$0.135 - $0.0984

Stock Levels
18000 In stock
Attributes
  • Overall Height
    0.530 in
  • Distance Across Flats
    0.500 in
  • Thread Size
    5/16-18
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 3/8-16; Distance Across Flats 14.4 mm | 0.565 in; Overall Height 15.7 mm | 0.620 in; Black; Nylon 6/6

0537516CNB

Price Range
$0.3007 - $0.2576

Stock Levels
Request the lead time here
Attributes
  • Overall Height
    0.620 in
  • Distance Across Flats
    0.565 in
  • Thread Size
    3/8-16
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/4-20; Distance Across Flats 10.8 mm | 0.425 in; Overall Height 12.1 mm | 0.475 in; Black; Nylon 6/6

0525020LCNB

Price Range
$0.0691 - $0.0504

Stock Levels
Request the lead time here
Attributes
  • Overall Height
    0.475 in
  • Distance Across Flats
    0.425 in
  • Thread Size
    1/4-20
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 3/8-24; Distance Across Flats 14.4 mm | 0.565 in; Overall Height 15.7 mm | 0.620 in; Natural; Nylon 6/6

0537524CN

Price Range
$0.1833 - $0.157

Stock Levels
4000 In stock
Attributes
  • Overall Height
    0.620 in
  • Distance Across Flats
    0.565 in
  • Thread Size
    3/8-24
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/2-20; Distance Across Flats 19.1 mm | 0.750 in; Overall Height 20.6 mm | 0.810 in; Natural; Nylon 6/6

0550020CN

Price Range
$0.3518 - $0.2565

Stock Levels
500 In stock
Attributes
  • Overall Height
    0.810 in
  • Distance Across Flats
    0.750 in
  • Thread Size
    1/2-20
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size #10-32; Distance Across Flats 9.3 mm | 0.365 in; Overall Height 10.2 mm | 0.400 in; Black; Nylon 6/6

0501032LCNB

Price Range
$0.2247 - $0.0987

Stock Levels
46000 In stock
Attributes
  • Overall Height
    0.400 in
  • Distance Across Flats
    0.365 in
  • Thread Size
    #10-32
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/4-20; Distance Across Flats 10.8 mm | 0.425 in; Overall Height 12.1 mm | 0.475 in; Black; Nylon 6/6

0525020CNB

Price Range
$0.0691 - $0.0504

Stock Levels
11000 In stock
Attributes
  • Overall Height
    0.475 in
  • Distance Across Flats
    0.425 in
  • Thread Size
    1/4-20
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 5/16-18; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 13.5 mm | 0.530 in; Natural; Nylon 6/6

0531218CN

Price Range
$0.1228 - $0.0895

Stock Levels
2500 In stock
Attributes
  • Overall Height
    0.530 in
  • Distance Across Flats
    0.500 in
  • Thread Size
    5/16-18
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 3/8-32; Distance Across Flats 14.4 mm | 0.565 in; Overall Height 15.7 mm | 0.620 in; Black; Nylon 6/6

0537532CNB

Price Range
$0.417 - $0.1833

Stock Levels
2000 In stock
Attributes
  • Overall Height
    0.620 in
  • Distance Across Flats
    0.565 in
  • Thread Size
    3/8-32
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/2-13; Distance Across Flats 19.1 mm | 0.750 in; Overall Height 20.6 mm | 0.810 in; Black; Nylon 6/6

0550013CNB

Price Range
$0.387 - $0.2822

Stock Levels
10000 In stock
Attributes
  • Overall Height
    0.810 in
  • Distance Across Flats
    0.750 in
  • Thread Size
    1/2-13
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size M4 x 0.7; Distance Across Flats 7.0 mm | 0.276 in; Overall Height 8.0 mm | 0.315 in; Natural; Nylon 6/6

05M040070CN

Price Range
$0.1021 - $0.0875

Stock Levels
2000 In stock
Attributes
  • Overall Height
    0.315 in
  • Distance Across Flats
    0.276 in
  • Thread Size
    M4 x 0.7
  • Color
    Natural
  • Full Material
    Nylon 6/6