W1 / W4

9 products

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  • Mini Fuel Hose Clip - 10 Pack Clips & Clamps Auto Silicone Hoses

    Mini Fuel Hose Clip

    Hex Head 9mm Band Width 0.6mm Thick
    From £0.38
    From £0.38
  • Mini Fuel Hose Clip - 10 Pack Clips & Clamps Auto Silicone Hoses

    Mini Fuel Hose Clip - 10 Pack

    Hex Head 9mm Band Width 0.6mm Thick
    From £3.80
    From £3.80
  • Mini Fuel Hose Clip - 100 Pack Clips & Clamps Auto Silicone Hoses

    Mini Fuel Hose Clip - 100 Pack

    Hex Head 9mm Band Width 0.6mm Thick
    From £38.00
    From £38.00
  • Rubber Lined P Clips Auto Silicone Hoses

    Rubber Lined P Clips

    Surface Mount 12mm Band Width 0.6mm Thick
    From £0.38
    From £0.38
  • Rubber Lined P Clips - 10 Pack Auto Silicone Hoses

    Rubber Lined P Clips - 10 Pack

    Surface Mount 12mm Band Width 0.6mm Thick
    From £3.80
    From £3.80
  • Rubber Lined P Clips - 100 Pack Auto Silicone Hoses

    Rubber Lined P Clips - 100 Pack

    Surface Mount 12mm Band Width 0.6mm Thick
    From £38.00
    From £38.00
  • T Bolt Hose Clamp Clips & Clamps Auto Silicone Hoses

    T Bolt Hose Clamp

    M5/6/8 Head 18-24mm Band Width Smooth Inner
    From £1.09
    From £1.09
  • T Bolt Hose Clamp - 10 Pack Motor Vehicle Engine Parts Auto Silicone Hoses W4 Stainless Steel 17mm>19mm

    T Bolt Hose Clamp - 10 Pack

    M5/6/8 Head 18-24mm Band Width Smooth Inner
    From £10.90
    From £10.90
  • T Bolt Hose Clamp - 100 Pack Motor Vehicle Engine Parts Auto Silicone Hoses W4 Stainless Steel 17mm>19mm

    T Bolt Hose Clamp - 100 Pack

    M5/6/8 Head 18-24mm Band Width Smooth Inner
    From £109.00
    From £109.00

W1 / W4

Our W1 / W4 Hose Clamp collection provides reliable, corrosion-resistant clamping solutions for a wide range of applications. Crafted to meet rigorous standards, these clamps ensure secure connections and long-lasting performance, even in challenging environments.

The W1 series features a complete stainless steel band and housing, ideal for general-purpose use in low to moderate corrosive conditions. The W4 series, with all parts made from high-grade stainless steel, offers enhanced resistance to rust and corrosion, making it ideal for marine, automotive, and industrial settings where durability is critical.

These clamps are designed for quick installation and strong, consistent clamping pressure, providing a leak-proof seal on hoses in applications such as plumbing, exhaust systems, and fuel lines. With W1 and W4 options, our collection delivers dependable, high-quality solutions to meet a range of environmental and performance needs.

What do W1 and W4 mean?
They are material grades for hose clamps. W1 is zinc-plated steel throughout. W4 is stainless steel throughout - band, housing and screw. The grading tells you the corrosion resistance, which is the main thing that determines how long a clip lasts and whether you can still undo it in five years.

Which should I buy?
W4 stainless for anything exposed to weather, coolant, road salt, damp or a marine environment - which covers most engine bay, outdoor and agricultural work. W1 zinc plated is cheaper and fine for dry indoor and general workshop use. Given the cost of a seized clip in an awkward spot, W4 is usually the sensible choice.

Is a partly stainless clip good enough?
Be careful here. Some clips sold as stainless use a stainless band with a plated screw - and the screw is the part that seizes first. Once the screw corrodes, the clip cannot be adjusted or removed without cutting it off. Full W4 means band, housing and screw are all stainless.

What clip types come in these grades?
T-bolt clamps in 23 size ranges from 17mm to 19mm up to 122mm to 130mm; mini fuel hose clips in 11 ranges from 7mm to 9mm up to 18mm to 20mm; and rubber-lined P-clips in 10 sizes from 5mm to 35mm. All available in singles, 10 and 100 packs, and in both W1 and W4.

How do I choose the size?
Size to the outside diameter of the hose once fitted over the pipe, not to the bore. Clips are listed by adjustment range and your fitted diameter should sit around the middle of it, not at either extreme - a clip at the end of its travel either will not close or has almost no thread engaged.

When should I use a T-bolt clamp?
On boost, intercooler and turbo pipework, and anywhere with real vibration. A T-bolt applies even pressure right round the joint with a smooth inner band and holds tension through heat cycling far better than a worm drive, whose perforated band can also bite into soft silicone.

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