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FAQs

1/4-inch drive: small fasteners (typically up to M8 / 13mm), fine work, electronics, and tight-access service. Limited to about 30 Nm torque; over-torque damages the drive. 3/8-inch drive: general workshop work, fasteners M5-M16 / 8-19mm range. The most-used drive in vehicle service. Up to about 100 Nm typical. 1/2-inch drive: heavier fasteners M10-M24+ / 13-32mm range, suspension and engine fasteners. Up to about 350 Nm typical. 3/4-inch and 1-inch drive: HGV, plant equipment, heavy industrial. For trade workshops, 3/8-inch and 1/2-inch covers the typical workload.

Standard chrome sockets are designed for hand-driven work — chrome-vanadium construction with thin walls and bright chrome finish. Use with hand ratchet or breaker bar. Impact sockets are designed for use with air or battery-powered impact wrenches — chrome-molybdenum construction with thicker walls, dull-black phosphate finish, and heat-treatment that resists shock-loading. Using chrome sockets on impact wrenches risks the socket shattering under repeated shock; the dull black finish identifies impact sockets at a glance.

Standard sockets cover most general-fastener work — sufficient depth to engage the head of typical fasteners. Deep sockets engage longer threaded studs (where the fastener stands proud) — essential for spark-plugs, brake-caliper bolts on threaded studs, and many suspension fasteners. Impact-deep sockets combine impact-grade construction with deep socket length — the workshop standard for high-torque suspension and chassis work where the socket is used with an impact wrench on threaded-stud fasteners. Match the socket type to the fastener and the tool.

Yes — Torx sockets in the standard E-pattern (external Torx, fits onto a Torx-head bolt) and T-pattern (internal Torx, fits inside a Torx-head bolt) sizes, hex/Allen sockets in the standard metric and imperial sizes, spline sockets (Bristol-pattern multi-spline used in some specialist applications), triple-square (XZN) sockets for German-vehicle drivetrain fasteners, and the matched specialist accessories are available across the socketry range. Specialist sockets are typically sold in sets matched by size range and drive size.

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.

Mechanics and Automotive Socketry

Within Workshop Tools, Mechanics and Automotive Socketry covers the socket sets and individual sockets used in mechanical, vehicle, and plant-equipment service work — covering 1/4-inch, 3/8-inch, and 1/2-inch square-drive socket sets in both metric and imperial sizes, deep sockets and impact sockets (heat-treated for use with impact wrenches), specialist sockets (Torx, hex/Allen, spline, and triple-square sockets for modern fastener types), and the matched ratchet handles, T-handles, breaker bars, extensions, and universal-joint adapters used in workshop spanner work. Parts for Machines supplies mechanics and automotive socketry across the trade and professional ranges, with comprehensive coverage of the standard socket-drive sizes and fastener-head patterns used in vehicle, plant-equipment, and general workshop service. We are an authorised distributor and seller of Sealey and Draper across the socketry range. Sealey covers the broadest selection — comprehensive socket sets in 1/4-inch, 3/8-inch, and 1/2-inch drives across the metric and imperial size ranges, deep sockets for accessing recessed fasteners, impact sockets for use with air and battery-powered impact wrenches, specialist Torx, hex/Allen, and spline socket sets, and the matched accessories. Draper extends the range with workshop and trade-grade variants. Product pages list the drive size (1/4-inch for fine work, 3/8-inch for general workshop, 1/2-inch for heavier fasteners, 3/4-inch and 1-inch for HGV and plant-equipment work), the size range and unit (metric mm or imperial inches), the socket type (standard, deep, impact, specialist Torx/hex/spline), the construction (chrome-vanadium for general use; chrome-molybdenum for impact-rated sockets), the wall thickness (thinner walls for tight-access work; standard walls for general service), the case or storage (compact case, blow-mould case, or rolled-up tool roll), and any specific certifications. Trade pricing on bulk and trade-pack orders is available; contact the team via WhatsApp 07754288583.

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