14,000+ products

New range now liveA2 & A4 stainless

Stainless steel fixings, now live on Simfix

Bolts, screws, nuts, washers and more

Shop the range→
  • Bolts
    Bolts
    1535 products
  • M8 nyloc nut A2 stainless DIN 985
    Nuts
    906 products
  • 6.3mm x 25mm hex self-drilling screw A2 stainless DIN 7504
    Screws
    10339 products
  • M8 flat washer Form A A2 stainless DIN 125-A
    Washers
    711 products
  • M10 X 1 Plug Pitch DIN 908 A4 Stainless Steel
    Other
    956 products
Also available on diy.com Verified seller on B&Q MarketplaceSimfix products are available on diy.com, sold and shipped by Simfix. View Simfix on B&Q

Find your fixing

Less faff.
More fixing.

Choose the type, diameter and grade you need. We’ll narrow the range to the products that fit.

Not sure about A2 or A4?

A2 (304) For general use indoors and many outdoor jobs.

A4 (316) Higher corrosion resistance for coastal and marine environments.

Check sizes and stainless grades →
1 Choose your fixingThen choose type, diameter & grade

Choose a type to narrow by diameter and grade.

10339 matching products

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Choose your DIY or trade pack on the product page.

  • Courier carrying three stacked cardboard parcels ready for dispatch
    Before 3:30pm

    Delivery that keeps you moving

    Order before 3:30pm Monday-Friday and we aim to dispatch the same working day, with express options shown at checkout.

    Delivery info
  • Close up of stainless steel hexagon full nuts in an orange parts bin
    A2 or A4

    A2 & A4 stainless made simple

    A2 suits most indoor, outdoor and workshop jobs. Pick A4 marine grade for coastal, wet or salt-spray environments.

    Read the guide
  • Stack of wooden blocks printed with smiley faces, representing customer satisfaction
    30 days from delivery

    Speedy Refunds

    If something is not right, contact us within 30 days of delivery for a full refund or replacement.

    Refund policy

Shop by application

Find stainless fixings for the job you have in mind.

View all applications

Indoor

Furniture, kitchens and everyday jobs around the home.

Shop Indoor

Outdoor

Decking, fencing and garden structures exposed to the weather.

Shop Outdoor

Workshop

Fabrication, machinery maintenance and repairs.

Shop Workshop

Marine

A4 (316) stainless fixings for boats and coastal jobs.

Shop Marine

Already know what you need? Shop the full range

Rigging & boat fittings

THE FIX - ESSENTIAL GUIDES

  • Metric v imperial fasteners guide
    Metric vs Imperial Fasteners: How to Tell Them Apart

  • Clean and galled stainless steel bolt assemblies beside anti-seize compound
    How to Stop Stainless Steel Bolts Seizing: Thread Galling Guide

  • Stainless steel screws with insulating washers fitted to a satin aluminium panel
    Stainless Steel Screws in Aluminium: Galvanic Corrosion Guide

ABOUT SIMFIX

Simfix is a UK-based specialist in stainless steel fasteners, built for the people who actually use them - tradespeople, DIY enthusiasts and anyone who refuses to compromise on quality.

From a single pack of screws to a full project order, we stock A2 and A4 marine-grade stainless steel fixings designed to stand up to British weather, treated timber and tough outdoor conditions. Clear product information, sensible pack sizes and fast UK dispatch - that's what Simfix is here for.

Whatever you're building, fixing or finishing, we'll help you get the right fastener first time.

Outdoor project? Simfix. Workshop fix? Simfix. Indoor job? You know where to go.