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Stock code 813

50x Natural Glass Filled Nylon Socket Head Screws M4 x 20 mm, Nuts & Washers

The details, at a glance.

  • Thread M4
  • Length 20 mm
  • Material Nylon PA 66 / 50% Glass Fibre Reinforced
  • Colour Natural
  • Pack size 50
Prices
Price per pack £17.24 ex VAT · £20.69 inc VAT

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    Check the fit. Technical specification

    Product type
    Socket Head Bolts
    Size (mm)
    M4 x 20mm
    Thread
    M4
    Material
    Nylon PA 66 / 50% Glass Fibre Reinforced
    Colour
    Natural
    Pack size
    50
    Diameter
    4.00 mm
    Length
    20 mm
    Width
    4 mm
    Thickness / depth
    4 mm
    Pitch
    0.7 mm

    Bolt, nut and washer dimensions

    Bolt

    Material: Polyamide+fiberglass, Head/Drive Type: Socket Hex Head Bolt, size: M4 x 20, D: 4 mm, Pitch: 0.7 mm, L: 20 mm, HD: 7 mm, HH: 3.91 mm, HS: 3.05 mm

    Nut

    Material: Polyamide+fiberglass, Head/Drive Type: Hexagon Nut, size: M4, N (mm): M4, HN B: 6.89 mm, HN H: 3.05 mm

    Washer

    Material: Polyamide+fiberglass, Head/Drive Type: Flat Washer, size: M4, W0 A: 8.82 mm, W0 B: 4.39 mm, W0 T: 0.8 mm

    Description

    Features

    • 50x Bolts, 50x Nuts, 50x Washers. Colour: Natural. Material: PA 66 / 50% GF. Type: Socket Head Bolts. Length: 20mm. Diameter: 4mm. Pitch: 0.7mm. Head diameter: 7mm. Head height: 3.9mm. Hex key: 3mm. SKU: 813.
    • This product contains 50% glass fibre. The addition of glass fibres improves the heat deflection temperature, allowing the material to withstand higher temperatures before deforming under load.
    • Glass-reinforced nylon has greater tensile strength, stiffness and impact resistance than unreinforced PA66.
    • The composite also possesses superior hardness, surface durability, and wear resistance compared to PA66.
    • Socket head bolts are tightened and loosened with a hex key. Also known as socket cap screws, hex socket screws.

    Product Summary

    This product contains 50% glass fibre. While the melting point remains largely unchanged, the heat deflection temperature of PA66+GF (glass fibre reinforced PA66) is superior to that of PA66, meaning that the composite can withstand higher temperatures before beginning to deform under load. The composite exhibits reduced moisture absorption, a significant improvement over PA66's susceptibility to moisture. Common applications include automotive components, industrial machinery and consumer goods where high strength and thermal resistance are required. Socket head bolts are also known as socket cap screws.

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