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Hex Head Cap Screws - Plastic

In stock

Hexagonal Head Cap Screws are distinguished by their hexagonal head, allowing easy installation and tightening with a wrench or socket. Made of plastic, they are lightweight and resistant to corrosion, oil, abrasion and most chemicals.

Offered in a variety of standard imperial and metric sizes as a replacement to all metal versions. Used in various applications, including electrical equipment, automotive trim, and furniture.

  • Material: PA, Nylon, PU, PC
  • Colour: Natural, Black, Clear

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1,528 results
Product SKUs information
Item Code Price range Availability Thread Size Overall Length Thread Length View
$1.8575 - $4.2293 Request the lead time here
5/16-18
3.500 in
$1.4313 - $1.9634 3750 In stock
5/16-18
4.500 in
$2.1041 - $4.7906 Request the lead time here
5/16-18
5.500 in
$0.356 - $0.8105 Request the lead time here
5/16-24
0.500 in
$0.3779 - $0.4409 Request the lead time here
5/16-24
1.000 in
$0.309 - $0.3603 1000 In stock
3/8-16
0.500 in
$0.9231 - $1.2663 Request the lead time here
3/8-16
0.625 in
$1.2906 - $1.5057 Request the lead time here
3/8-16
0.750 in
$1.0457 - $1.4345 Request the lead time here
3/8-16
1.000 in
$1.0923 - $1.4985 1000 In stock
3/8-16
1.250 in
$0.3852 - $0.8768 2500 In stock
3/8-16
1.500 in
$1.1099 - $1.5224 Request the lead time here
3/8-16
1.625 in
$1.4655 - $2.0103 Request the lead time here
3/8-16
3.250 in
$1.1798 - $1.6184 Request the lead time here
3/8-16
2.000 in
$0.3324 - $0.4562 750 In stock
3/8-16
2.500 in
$1.6521 - $2.2662 Request the lead time here
3/8-16
4.250 in
$1.6988 - $2.3301 Request the lead time here
3/8-16
4.500 in
$1.9053 - $4.3377 Request the lead time here
3/8-16
5.500 in
$1.9523 - $4.445 13500 In stock
3/8-16
7.000 in
$1.5995 - $2.1941 Request the lead time here
3/8-16
4.250 in
  • of 77
Black Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 5/16-18; Thread Length 88.9 mm | 3.500 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331218350B

Price Range
$4.2293 - $1.8575

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    18 TPI
  • Thread Length
    3.500 in
  • Thread Size
    5/16-18
Black Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 5/16-18; Thread Length 114.3 mm | 4.500 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331218450B

Price Range
$1.9634 - $1.4313

Stock Levels
3750 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    18 TPI
  • Thread Length
    4.500 in
  • Thread Size
    5/16-18
Black Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 5/16-18; Thread Length 139.7 mm | 5.500 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331218550B

Price Range
$4.7906 - $2.1041

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    18 TPI
  • Thread Length
    5.500 in
  • Thread Size
    5/16-18
Black Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 5/16-24; Thread Length 12.7 mm | 0.500 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331224050B

Price Range
$0.8105 - $0.356

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    24 TPI
  • Thread Length
    0.500 in
  • Thread Size
    5/16-24
Black Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 5/16-24; Thread Length 25.4 mm | 1.000 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331224100B

Price Range
$0.4409 - $0.3779

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    24 TPI
  • Thread Length
    1.000 in
  • Thread Size
    5/16-24
Black Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 12.7 mm | 0.500 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516050B

Price Range
$0.3603 - $0.309

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    0.500 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 15.9 mm | 0.625 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516062XM225

Price Range
$1.2663 - $0.9231

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    0.625 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 19.1 mm | 0.750 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516075XM225

Price Range
$1.5057 - $1.2906

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    0.750 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 25.4 mm | 1.000 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 9.9 mm | 0.390 in

0337516100FXM225

Price Range
$1.4345 - $1.0457

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    1.000 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 31.8 mm | 1.250 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 9.9 mm | 0.390 in

0337516125FXM225

Price Range
$1.4985 - $1.0923

Stock Levels
1000 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    1.250 in
  • Thread Size
    3/8-16
Black Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 38.1 mm | 1.500 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516150FTB

Price Range
$0.8768 - $0.3852

Stock Levels
2500 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    1.500 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 31.8 mm | 1.250 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516162XM225

Price Range
$1.5224 - $1.1099

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    1.625 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 31.8 mm | 1.250 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 9.9 mm | 0.390 in

0337516325FXM225

Price Range
$2.0103 - $1.4655

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    3.250 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 31.8 mm | 1.250 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516200XM225

Price Range
$1.6184 - $1.1798

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    2.000 in
  • Thread Size
    3/8-16
Black Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 63.5 mm | 2.500 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516250B

Price Range
$0.4562 - $0.3324

Stock Levels
750 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    2.500 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 31.8 mm | 1.250 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 9.9 mm | 0.390 in

0337516425FXM225

Price Range
$2.2662 - $1.6521

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    4.250 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 114.3 mm | 4.500 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 9.9 mm | 0.390 in

0337516450FXM225

Price Range
$2.3301 - $1.6988

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    4.500 in
  • Thread Size
    3/8-16
Natural Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 139.7 mm | 5.500 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516550

Price Range
$4.3377 - $1.9053

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    5.500 in
  • Thread Size
    3/8-16
Natural Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 177.8 mm | 7.000 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516700

Price Range
$4.445 - $1.9523

Stock Levels
13500 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    7.000 in
  • Thread Size
    3/8-16
Natural 40% Glass Filled PU External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 31.8 mm | 1.250 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516425XM225

Price Range
$2.1941 - $1.5995

Stock Levels
Request the lead time here
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.268 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    4.250 in
  • Thread Size
    3/8-16