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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
$0.0984 - $0.135 17000 In stock
5/16-18
0.500 in
Black
Domed
0.530 in
$0.169 - $0.2318 500 In stock
5/16-18
0.500 in
Black
0.530 in
$0.30 - $0.6832 3000 In stock
3/8-16
0.565 in
Black
0.620 in
$0.1617 - $0.2217 36500 In stock
5/16-24
0.500 in
Black
Domed
0.530 in
$0.1469 - $0.2015 1500 In stock
5/16-24
0.500 in
Natural
Domed
0.530 in
$0.2576 - $0.3007 15000 In stock
3/8-16
0.565 in
Black
Domed
0.620 in
$0.1527 - $0.1782 5000 In stock
M8 x 1.25
0.512 in
Natural
Domed
0.591 in
$0.2567 - $0.352 14500 In stock
M12 x 1.75
0.744 in
Natural
Domed
0.807 in
05M200250CN $0.6322 - $0.7374 Request the lead time here
M20 x 2.5
1.051 in
Natural
Domed
1.146 in
$0.0956 - $0.218 15500 In stock
#8-32
0.330 in
Black
0.375 in
0501032CN $0.0572 - $0.0662 Request the lead time here
#10-32
0.365 in
Natural
Domed
0.400 in
$0.275 - $0.6263 1000 In stock
1/4-18
0.750 in
Black
Domed
0.810 in
$0.0683 - $0.0938 Request the lead time here
1/4-28
0.425 in
Natural
Domed
0.475 in
$0.2822 - $0.3871 500 In stock
1/2-20
0.750 in
Black
Domed
0.810 in
$0.1059 - $0.1234 4000 In stock
M4 x 0.7
0.276 in
Black
0.315 in
$0.1196 - $0.1642 500 In stock
3/8-32
0.565 in
Natural
Domed
0.620 in
$0.2565 - $0.3518 3000 In stock
1/2-13
0.750 in
Natural
Domed
0.810 in
0562511CNB $0.4459 - $0.6117 2750 In stock
5/8-11
0.935 in
Black
Domed
0.970 in
$0.0903 - $0.1053 2000 In stock
M5 x 0.8
0.315 in
Natural
Domed
0.394 in
0525018CN $0.1798 - $0.2466 4500 In stock
1/4-18
0.750 in
Natural
Domed
0.810 in
  • of 4
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
17000 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 5/16-18; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 13.5 mm | 0.530 in; Black; Nylon 6/6

0531218LCNB

Price Range
$0.2318 - $0.169

Stock Levels
500 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

0537516LCNB

Price Range
$0.6832 - $0.30

Stock Levels
3000 In stock
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 5/16-24; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 13.5 mm | 0.530 in; Black; Nylon 6/6

0531224CNB

Price Range
$0.2217 - $0.1617

Stock Levels
36500 In stock
Attributes
  • Overall Height
    0.530 in
  • Distance Across Flats
    0.500 in
  • Thread Size
    5/16-24
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 5/16-24; Distance Across Flats 12.7 mm | 0.500 in; Overall Height 13.5 mm | 0.530 in; Natural; Nylon 6/6

0531224CN

Price Range
$0.2015 - $0.1469

Stock Levels
1500 In stock
Attributes
  • Overall Height
    0.530 in
  • Distance Across Flats
    0.500 in
  • Thread Size
    5/16-24
  • 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; Black; Nylon 6/6

0537516CNB

Price Range
$0.3007 - $0.2576

Stock Levels
15000 In stock
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 M8 x 1.25; Distance Across Flats 13.0 mm | 0.512 in; Overall Height 15.0 mm | 0.591 in; Natural; Nylon 6/6

05M080125CN

Price Range
$0.1782 - $0.1527

Stock Levels
5000 In stock
Attributes
  • Overall Height
    0.591 in
  • Distance Across Flats
    0.512 in
  • Thread Size
    M8 x 1.25
  • Color
    Natural
  • Full Material
    Nylon 6/6
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; Natural; Nylon 6/6

05M120175CN

Price Range
$0.352 - $0.2567

Stock Levels
14500 In stock
Attributes
  • Overall Height
    0.807 in
  • Distance Across Flats
    0.744 in
  • Thread Size
    M12 x 1.75
  • Color
    Natural
  • 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; Natural; Nylon 6/6

05M200250CN

Price Range
$0.7374 - $0.6322

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
    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; Black; Nylon 6/6

0500832LCNB

Price Range
$0.218 - $0.0956

Stock Levels
15500 In stock
Attributes
  • Overall Height
    0.375 in
  • Distance Across Flats
    0.330 in
  • Thread Size
    #8-32
  • 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

0501032CN

Price Range
$0.0662 - $0.0572

Stock Levels
Request the lead time here
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 1/4-18; Distance Across Flats 10.8 mm | 0.425 in; Overall Height 12.1 mm | 0.475 in; Black; Nylon 6/6

0525018CNB

Price Range
$0.6263 - $0.275

Stock Levels
1000 In stock
Attributes
  • Overall Height
    0.810 in
  • Distance Across Flats
    0.750 in
  • Thread Size
    1/4-18
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/4-28; Distance Across Flats 10.8 mm | 0.425 in; Overall Height 12.1 mm | 0.475 in; Natural; Nylon 6/6

0525028CN

Price Range
$0.0938 - $0.0683

Stock Levels
Request the lead time here
Attributes
  • Overall Height
    0.475 in
  • Distance Across Flats
    0.425 in
  • Thread Size
    1/4-28
  • 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; Black; Nylon 6/6

0550020CNB

Price Range
$0.3871 - $0.2822

Stock Levels
500 In stock
Attributes
  • Overall Height
    0.810 in
  • Distance Across Flats
    0.750 in
  • Thread Size
    1/2-20
  • 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; Black; Nylon 6/6

05M040070LCNB

Price Range
$0.1234 - $0.1059

Stock Levels
4000 In stock
Attributes
  • Overall Height
    0.315 in
  • Distance Across Flats
    0.276 in
  • Thread Size
    M4 x 0.7
  • Color
    Black
  • 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; Natural; Nylon 6/6

0537532CN

Price Range
$0.1642 - $0.1196

Stock Levels
500 In stock
Attributes
  • Overall Height
    0.620 in
  • Distance Across Flats
    0.565 in
  • Thread Size
    3/8-32
  • Color
    Natural
  • 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; Natural; Nylon 6/6

0550013CN

Price Range
$0.3518 - $0.2565

Stock Levels
3000 In stock
Attributes
  • Overall Height
    0.810 in
  • Distance Across Flats
    0.750 in
  • Thread Size
    1/2-13
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 5/8-11; Distance Across Flats 23.7 mm | 0.935 in; Overall Height 24.6 mm | 0.970 in; Black; Nylon 6/6

0562511CNB

Price Range
$0.6117 - $0.4459

Stock Levels
2750 In stock
Attributes
  • Overall Height
    0.970 in
  • Distance Across Flats
    0.935 in
  • Thread Size
    5/8-11
  • Color
    Black
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size M5 x 0.8; Distance Across Flats 8.0 mm | 0.315 in; Overall Height 10.0 mm | 0.394 in; Natural; Nylon 6/6

05M050080CN

Price Range
$0.1053 - $0.0903

Stock Levels
2000 In stock
Attributes
  • Overall Height
    0.394 in
  • Distance Across Flats
    0.315 in
  • Thread Size
    M5 x 0.8
  • Color
    Natural
  • Full Material
    Nylon 6/6
Hexagonal Cap Nut - Thread Size 1/4-18; Distance Across Flats 10.8 mm | 0.425 in; Overall Height 12.1 mm | 0.475 in; Natural; Nylon 6/6

0525018CN

Price Range
$0.2466 - $0.1798

Stock Levels
4500 In stock
Attributes
  • Overall Height
    0.810 in
  • Distance Across Flats
    0.750 in
  • Thread Size
    1/4-18
  • Color
    Natural
  • Full Material
    Nylon 6/6