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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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Product SKUs information
Item Code Price range Availability Thread Size Distance Across Flats Color Buy
$0.0907 - $0.1059 17000 In stock
M5x.8
0.394 in
Natural
$0.0641 - $0.1459 500 In stock
1/4-20
0.425 in
Black
$0.3957 - $0.9009 35500 In stock
7/16-14
0.750 in
Black
05M040070CNB $0.088 - $0.1025 18400 In stock
M4x.7
0.276 in
Black
$0.0968 - $0.1128 In production
M4x.7
0.276 in
Black
05M080125CNB $0.1537 - $0.1792 27000 In stock
M8x1.25
0.512 in
Black
$0.0998 - $0.1164 In production
M5x.8
0.315 in
Black
$0.0704 - $0.082 13000 In stock
4-40
0.250 in
Natural
0500632CN $0.0727 - $0.0847 67000 In stock
6-32
0.305 in
Natural
$0.082 - $0.1867 In production
4-40
0.250 in
Black
$0.0875 - $0.1993 2000 In stock
8-32
0.330 in
Black
$0.2514 - $0.5726 1500 In stock
1/4-18
0.750 in
Black
$0.0903 - $0.2054 5000 In stock
10-32
0.365 in
Black
$0.0903 - $0.1052 In production
M6x1
0.394 in
Natural
$0.1435 - $0.1675 In production
3/8-24
0.565 in
Natural
$0.1396 - $0.163 7000 In stock
M8x1.25
0.512 in
Natural
$0.0774 - $0.0903 7000 In stock
4-40
0.250 in
Black
0501032CN $0.0523 - $0.0605 32000 In stock
10-32
0.365 in
Natural
$0.3588 - $0.817 In production
1/2-20
0.750 in
Black
$0.6357 - $0.7416 In production
M20x2.5
1.051 in
Black
  • of 4
Black Nylon Domed 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

0550020CNB

Price Range
$0.817 - $0.3588

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.750 in
  • Overall Height
    0.810 in
  • Thread Size
    1/2-20
  • Color
    Black
  • Material
    Nylon
Black Nylon Domed Hexagonal Cap Nut - Thread Size 4-40; Distance Across Flats 6.4 mm | 0.250 in; Overall Height 7.1 mm | 0.280 in

0500440CNB

Price Range
$0.0903 - $0.0774

Stock Levels
7000 In stock
Attributes
  • Distance Across Flats
    0.250 in
  • Overall Height
    0.280 in
  • Thread Size
    4-40
  • Color
    Black
  • Material
    Nylon
Black Nylon Locking Hexagonal Cap Nut - Thread Size M4x.7; Distance Across Flats 7.0 mm | 0.276 in; Overall Height 8.0 mm | 0.315 in

05M040070CNB

Price Range
$0.1025 - $0.088

Stock Levels
18400 In stock
Attributes
  • Distance Across Flats
    0.276 in
  • Overall Height
    0.315 in
  • Thread Size
    M4x.7
  • Color
    Black
  • Material
    Nylon
Black Nylon Locking Hexagonal Cap Nut - Thread Size M4x.7; Distance Across Flats 7.0 mm | 0.276 in; Overall Height 8.0 mm | 0.315 in

05M040070LCNB

Price Range
$0.1128 - $0.0968

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.276 in
  • Overall Height
    0.315 in
  • Thread Size
    M4x.7
  • Color
    Black
  • Material
    Nylon
Black Nylon Locking Hexagonal Cap Nut - Thread Size M5x.8; Distance Across Flats 8.0 mm | 0.315 in; Overall Height 10.0 mm | 0.394 in

05M050080LCNB

Price Range
$0.1164 - $0.0998

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.315 in
  • Overall Height
    0.394 in
  • Thread Size
    M5x.8
  • Color
    Black
  • Material
    Nylon
Black Nylon Locking Hexagonal Cap Nut - Thread Size 4-40; Distance Across Flats 6.4 mm | 0.250 in; Overall Height 7.1 mm | 0.280 in

0500440LCNB

Price Range
$0.1867 - $0.082

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.250 in
  • Overall Height
    0.280 in
  • Thread Size
    4-40
  • Color
    Black
  • Material
    Nylon
Natural Nylon Domed Hexagonal Cap Nut - Thread Size M6x1; Distance Across Flats 10.0 mm | 0.394 in; Overall Height 12.0 mm | 0.472 in

05M060100CN

Price Range
$0.1052 - $0.0903

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.394 in
  • Overall Height
    0.472 in
  • Thread Size
    M6x1
  • Color
    Natural
  • Material
    Nylon
Black Nylon Locking Hexagonal Cap Nut - Thread Size 8-32; Distance Across Flats 8.4 mm | 0.330 in; Overall Height 9.5 mm | 0.375 in

0500832LCNB

Price Range
$0.1993 - $0.0875

Stock Levels
2000 In stock
Attributes
  • Distance Across Flats
    0.330 in
  • Overall Height
    0.375 in
  • Thread Size
    8-32
  • Color
    Black
  • Material
    Nylon
Natural Nylon Domed Hexagonal Cap Nut - Thread Size M8x1.25; Distance Across Flats 13.0 mm | 0.512 in; Overall Height 15.0 mm | 0.591 in

05M080125CN

Price Range
$0.163 - $0.1396

Stock Levels
7000 In stock
Attributes
  • Distance Across Flats
    0.512 in
  • Overall Height
    0.591 in
  • Thread Size
    M8x1.25
  • Color
    Natural
  • Material
    Nylon
Natural Nylon Domed Hexagonal Cap Nut - Thread Size 6-32; Distance Across Flats 7.7 mm | 0.305 in; Overall Height 8.8 mm | 0.345 in

0500632CN

Price Range
$0.0847 - $0.0727

Stock Levels
67000 In stock
Attributes
  • Distance Across Flats
    0.305 in
  • Overall Height
    0.345 in
  • Thread Size
    6-32
  • Color
    Natural
  • Material
    Nylon
Black Nylon Domed Hexagonal Cap Nut - Thread Size M8x1.25; Distance Across Flats 13.0 mm | 0.512 in; Overall Height 15.0 mm | 0.591 in

05M080125CNB

Price Range
$0.1792 - $0.1537

Stock Levels
27000 In stock
Attributes
  • Distance Across Flats
    0.512 in
  • Overall Height
    0.591 in
  • Thread Size
    M8x1.25
  • Color
    Black
  • Material
    Nylon
Natural Nylon Domed Hexagonal Cap Nut - Thread Size 10-32; Distance Across Flats 9.3 mm | 0.365 in; Overall Height 10.2 mm | 0.400 in

0501032CN

Price Range
$0.0605 - $0.0523

Stock Levels
32000 In stock
Attributes
  • Distance Across Flats
    0.365 in
  • Overall Height
    0.400 in
  • Thread Size
    10-32
  • Color
    Natural
  • Material
    Nylon
Natural Nylon Locking Hexagonal Cap Nut - Thread Size M5x.8; Distance Across Flats 10.0 mm | 0.394 in; Overall Height 10.0 mm | 0.394 in

05M050080LCN

Price Range
$0.1059 - $0.0907

Stock Levels
17000 In stock
Attributes
  • Distance Across Flats
    0.394 in
  • Overall Height
    0.394 in
  • Thread Size
    M5x.8
  • Color
    Natural
  • Material
    Nylon
Black Nylon Locking Hexagonal Cap Nut - Thread Size 10-32; Distance Across Flats 9.3 mm | 0.365 in; Overall Height 10.2 mm | 0.400 in

0501032LCNB

Price Range
$0.2054 - $0.0903

Stock Levels
5000 In stock
Attributes
  • Distance Across Flats
    0.365 in
  • Overall Height
    0.400 in
  • Thread Size
    10-32
  • Color
    Black
  • Material
    Nylon
Black Nylon Domed Hexagonal Cap Nut - Thread Size 1/4-18; Distance Across Flats 19.1 mm | 0.750 in; Overall Height 20.6 mm | 0.810 in

0525018CNB

Price Range
$0.5726 - $0.2514

Stock Levels
1500 In stock
Attributes
  • Distance Across Flats
    0.750 in
  • Overall Height
    0.810 in
  • Thread Size
    1/4-18
  • Color
    Black
  • Material
    Nylon
Black Nylon Locking 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

0525020LCNB

Price Range
$0.1459 - $0.0641

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    0.425 in
  • Overall Height
    0.475 in
  • Thread Size
    1/4-20
  • Color
    Black
  • Material
    Nylon
Black Nylon Domed Hexagonal Cap Nut - Thread Size M20x2.5; Distance Across Flats 26.7 mm | 1.051 in; Overall Height 29.1 mm | 1.146 in

05M200250CNB

Price Range
$0.7416 - $0.6357

Stock Levels
In production
Attributes
  • Distance Across Flats
    1.051 in
  • Overall Height
    1.146 in
  • Thread Size
    M20x2.5
  • Color
    Black
  • Material
    Nylon
Natural Nylon Domed Hexagonal Cap Nut - Thread Size 4-40; Distance Across Flats 6.4 mm | 0.250 in; Overall Height 7.1 mm | 0.280 in

0500440CN

Price Range
$0.082 - $0.0704

Stock Levels
13000 In stock
Attributes
  • Distance Across Flats
    0.250 in
  • Overall Height
    0.280 in
  • Thread Size
    4-40
  • Color
    Natural
  • Material
    Nylon
Natural Nylon Domed 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

0537524CN

Price Range
$0.1675 - $0.1435

Stock Levels
In production
Attributes
  • Distance Across Flats
    0.565 in
  • Overall Height
    0.620 in
  • Thread Size
    3/8-24
  • Color
    Natural
  • Material
    Nylon
Black Nylon Domed Hexagonal Cap Nut - Thread Size 7/16-14; Distance Across Flats 19.1 mm | 0.750 in; Overall Height 20.6 mm | 0.810 in

0543714CNB

Price Range
$0.9009 - $0.3957

Stock Levels
35500 In stock
Attributes
  • Distance Across Flats
    0.750 in
  • Overall Height
    0.810 in
  • Thread Size
    7/16-14
  • Color
    Black
  • Material
    Nylon