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Hex Head Cap Screws - Plastic

In stock

Plastic Hex Head Screws, also known as Plastic Cap Screws or Plastic Hex Bolt, are designed to mate with machine threads and help secure a component to an assembly.

Plastic Hex Head Cap Screws are ideal for use in difficult to reach or awkwardly located sockets, thanks to the slim design on the head, which is hexagonal in shape. Our Hex Head Cap Screws are available with or without a flange at the base of the screws head, as well as slotted and non slotted drive types.

These Hex Cap Screws come in a variety of standard imperial and metric sizes, and are an ideal alternative to all metal options. Offered in a choice of plastic material options, including; Nylon 6/6, Polycarbonate (PC) and Polyurethane (PU). These cap screws benefit from being lightweight, as well as having vibration, chemical, electrical and corrosion resistance.

  • Colors: Black, Clear (Transparent) and Natural

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1,528 results
Product SKUs information
Item Code Price range Availability Thread Size Overall Length Thread Length View
$1.2816 - $2.9182 Request the lead time here
5/16-18
3.500 in
$0.9876 - $1.3547 3750 In stock
5/16-18
4.500 in
$1.4518 - $3.3055 Request the lead time here
5/16-18
5.500 in
$0.2456 - $0.5592 Request the lead time here
5/16-24
0.500 in
$1.3511 - $3.0765 250 In stock
5/16-18
6.000 in
$0.2373 - $0.5403 41250 In stock
5/16-24
0.750 in
$0.2008 - $0.2755 21750 In stock
5/16-24
1.500 in
$0.6572 - $0.9015 500 In stock
3/8-16
0.500 in
$0.2023 - $0.2361 8000 In stock
3/8-16
0.750 in
$0.7055 - $0.9678 Request the lead time here
3/8-16
0.875 in
$0.6853 - $0.94 Request the lead time here
3/8-16
1.000 in
$0.7174 - $0.9842 Request the lead time here
3/8-16
1.250 in
$0.786 - $1.0781 1500 In stock
3/8-16
1.500 in
$0.8181 - $1.1221 Request the lead time here
3/8-16
1.750 in
$0.1951 - $0.2675 1500 In stock
3/8-16
2.000 in
$0.3088 - $0.7033 Request the lead time here
3/8-16
3.000 in
$1.0112 - $1.3871 Request the lead time here
3/8-16
3.250 in
$1.0434 - $1.4313 Request the lead time here
3/8-16
3.500 in
$1.2007 - $2.7338 Request the lead time here
3/8-16
4.000 in
$1.1399 - $1.5637 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
$2.9182 - $1.2816

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
$1.3547 - $0.9876

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
$3.3055 - $1.4518

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
$0.5592 - $0.2456

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
Natural Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 5/16-18; Thread Length 152.4 mm | 6.000 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331218600

Price Range
$3.0765 - $1.3511

Stock Levels
250 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    18 TPI
  • Thread Length
    6.000 in
  • Thread Size
    5/16-18
Natural Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 5/16-24; Thread Length 19.1 mm | 0.750 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331224075

Price Range
$0.5403 - $0.2373

Stock Levels
41250 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    24 TPI
  • Thread Length
    0.750 in
  • Thread Size
    5/16-24
Natural Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 5/16-24; Thread Length 38.1 mm | 1.500 in; Distance Across Flats 12.7 mm | 0.500 in; Head Height 6 mm | 0.235 in

0331224150FT

Price Range
$0.2755 - $0.2008

Stock Levels
21750 In stock
Attributes
  • Distance Across Flats
    0.500 in
  • Head Height
    0.235 in
  • Pitch/TPI
    24 TPI
  • Thread Length
    1.500 in
  • Thread Size
    5/16-24
Natural 40% Glass Filled PU 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 9.9 mm | 0.390 in

0337516050FXM225

Price Range
$0.9015 - $0.6572

Stock Levels
500 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 in
  • Pitch/TPI
    16 TPI
  • Thread Length
    0.500 in
  • Thread Size
    3/8-16
Natural Nylon 6/6 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

0337516075

Price Range
$0.2361 - $0.2023

Stock Levels
8000 In stock
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 22.2 mm | 0.875 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 9.9 mm | 0.390 in

0337516087FXM225

Price Range
$0.9678 - $0.7055

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
    0.875 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 6.8 mm | 0.268 in

0337516100XM225

Price Range
$0.94 - $0.6853

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
    1.000 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 6.8 mm | 0.268 in

0337516125XM225

Price Range
$0.9842 - $0.7174

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
    1.250 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 9.9 mm | 0.390 in

0337516150FXM225

Price Range
$1.0781 - $0.786

Stock Levels
1500 In stock
Attributes
  • Distance Across Flats
    0.562 in
  • Head Height
    0.390 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 9.9 mm | 0.390 in

0337516175FXM225

Price Range
$1.1221 - $0.8181

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
    1.750 in
  • Thread Size
    3/8-16
Natural Nylon 6/6 External Hexagonal Unslotted Drive Fully Threaded Screw Cap Screw - 3/8-16; Thread Length 50.8 mm | 2.000 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516200FT

Price Range
$0.2675 - $0.1951

Stock Levels
1500 In stock
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
Natural Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 76.2 mm | 3.000 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516300

Price Range
$0.7033 - $0.3088

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
    3.000 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 9.9 mm | 0.390 in

0337516325FXM225

Price Range
$1.3871 - $1.0112

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 9.9 mm | 0.390 in

0337516350FXM225

Price Range
$1.4313 - $1.0434

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
    3.500 in
  • Thread Size
    3/8-16
Natural Nylon 6/6 External Hexagonal Unslotted Drive Part Threaded Screw Cap Screw - 3/8-16; Thread Length 101.6 mm | 4.000 in; Distance Across Flats 14.3 mm | 0.562 in; Head Height 6.8 mm | 0.268 in

0337516400

Price Range
$2.7338 - $1.2007

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
    4.000 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 9.9 mm | 0.390 in

0337516425FXM225

Price Range
$1.5637 - $1.1399

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