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Parallel Keys

FAQs

Every product is backed by our Fit Guarantee. If a part is incompatible with your machine, you can return it hassle-free. For damaged-on-arrival items, report within 24 hours with photographs to [email protected] — we will arrange collection. For other returns, email us first to obtain a Return Merchandise Number before sending. Returns are accepted within 30 days of purchase, in original packaging, on UK orders. A restocking fee may apply on returns where the buyer has changed their mind. Refunds are issued to the original payment method once the return is inspected.

Delivery time depends on the product, your destination, and availability — the estimated time for any item appears on the product page, and "Check where we deliver" confirms coverage for your postcode before you order. Next-day delivery is available on most products; the option appears at checkout when applicable. We deliver across the UK, Europe, the Middle East, and Africa. Use the country selector at checkout to confirm coverage and delivery options for your destination.

Match the grade to the load and environment. High-tensile 8.8 or 10.9 bolts suit structural and drivetrain assemblies where clamping force is critical. Zinc-plated mild steel is adequate for indoor or protected applications. Stainless A2 resists general corrosion; A4 is preferred for marine or chemically aggressive environments. Always confirm thread standard (metric, UNF, or UNC) and nominal diameter before ordering, as mixing thread forms risks joint failure.

The section lists fasteners in metric (coarse and fine pitch), UNF (Unified Fine), and UNC (Unified Coarse) thread forms. Metric threads are identified by diameter in millimetres and pitch in mm per turn, for example M10 x 1.5. Imperial threads are identified by diameter in fractions of an inch and threads per inch. If you have the original fastener, measure the shank diameter and count threads over 25 mm or one inch to confirm the standard before ordering.

Yes, specialist track shoe fixings including those compatible with PC 138 undercarriage assemblies are listed within the section. These are high-tensile fasteners with specific thread dimensions and head patterns suited to crawler undercarriage service. Use Ask Simon on the relevant product page for an instant fitment check if you are unsure which specification matches your machine's track shoe or link plate requirement.

Pack sizes vary across the range. Common sizes are available in small assortment bags suited to workshop top-up, through to trade boxes covering larger quantities for fleet or site use. Availability depends on the specific fastener type and grade. For bulk quantity requirements or trade account pricing, contact the team directly at [email protected] or via WhatsApp 07754288583.

Screws Nuts Bolts & Washers

Fasteners and fixings hold equipment together across every trade sector, and the right thread form, material grade, and head pattern matter as much as the component being joined. This section covers the full range of mechanical fasteners listed on PartsForMachines for direct trade order, from hex bolts and machine screws through to nuts, washers, threaded rods, parallel keys, and retaining clips. Screws & Bolts is the workhorse sub-section, covering machine screws, hex-head bolts, socket-head cap screws, set screws, and self-tapping variants across metric and imperial thread forms. Nuts contains hex nuts, nyloc nuts, flanged nuts, and dome nuts. Washers covers flat, spring, and penny types sized to match the bolt range. Threaded Rods lists continuous studding and cut-length rod for framing, mounting, and adjustment applications. Parallel Keys and Retaining Clips serve shaft and housing assemblies in drivetrains, gearboxes, and power transmission units. Trade buyers select fasteners by thread standard (metric, UNF, UNC), nominal diameter, thread pitch, material grade (zinc-plated, stainless A2 or A4, high-tensile Grade 8.8), and head or drive type. Pack quantities vary from small assortment bags to bulk trade boxes. If a specific application such as track shoe fixings or specialist machinery hardware is uncertain, use Ask Simon on the relevant product page for an instant fitment check. PartsForMachines is an Authorised Distributor and Seller for the fastener brands listed within this section. For bulk pack pricing or trade account queries, contact the team at [email protected] or via WhatsApp 07754288583.

Parallel Keys

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What if the part doesn't fit or arrives damaged?

How quickly will I get my order and where do you deliver?

How do I choose the correct fastener grade and material for my application?

What thread standards are covered, and how do I identify whether I need metric or imperial?

Are track shoe fixings such as PC 138 bolts and nuts listed on the site?

What pack sizes are available, and can trade buyers order in bulk quantities?

Screws Nuts Bolts & Washers

Parallel Keys

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