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Impact Drives & Wrenches

FAQs

Match drive size to the typical fastener size. 1/4 inch drive: small fasteners up to M6, electronic and small-machinery work. 3/8 inch drive: light automotive (M6-M10), motorcycle service. 1/2 inch drive: general automotive, light commercial (M8-M16), the workshop standard. 3/4 inch drive: heavy commercial, agricultural (M14-M22). 1 inch drive: HGV, plant, structural (M20+). Most workshops carry 3/8 and 1/2 inch as the everyday range, with 3/4 or 1 inch added for heavy-vehicle work.

Pneumatic impact wrenches: high power-to-weight, no battery management, indefinite run-time provided air supply is sufficient — the trade workshop standard for daily use. Battery impact wrenches: cordless mobility, no air supply required, suited to mobile-service work and field applications. Modern high-end battery impact wrenches now match pneumatic torque output for most applications, but battery management and charging time remain factors. Most workshops use both: pneumatic at the bench, battery for off-line and mobile work.

Impact tools deliver torque in rapid pulses (impact blows) rather than continuous turning. Hand-socket-rated sockets (chrome-vanadium, polished finish) are designed for steady torque and have thinner walls — under impact load, the steel work-hardens and shatters, throwing dangerous metal fragments. Impact-rated sockets (black-oxide finish, thicker walls, alloy steel formulated for impact) absorb the pulse loading without failure. The visual difference (matt black vs polished chrome) makes them easy to distinguish.

Yes. Impact-rated extension bars (in the standard 75mm, 150mm, 250mm lengths), impact-rated drive adapters (e.g., 3/8-to-1/2 inch, 1/2-to-3/4 inch), impact-rated universal joints, and impact swivel-extensions are available across the standard drive sizes. Like impact sockets, impact extensions and adapters use alloy steel and black-oxide finish — never substitute hand-socket equivalents on impact tools. The drive size and rating are listed on every product page.

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.

Impact Drives Wrenches & Consumables

Within Portable Power Tool, Impact Drives Wrenches & Consumables covers the high-torque pneumatic and battery-powered impact drives, impact wrenches, and the impact-rated socket and accessory range used in workshop assembly, vehicle service, and industrial fastener applications — covering 1/4 inch, 3/8 inch, 1/2 inch, 3/4 inch, and 1 inch drive sizes across the trade-and-industrial torque range. Parts for Machines supplies impact drives, impact wrenches, and impact consumables across the trade and professional ranges, with rated torque outputs typically running from 100 N·m (light 1/4 inch impact drives) up to 3,500+ N·m (heavy 1 inch industrial impact wrenches for HGV, agricultural, and plant applications). We are an authorised distributor and seller of Chicago Pneumatic, Draper, and SIP across the impact tool range. Chicago Pneumatic covers the broadest selection — pneumatic impact wrenches across all drive sizes, from light 3/8 inch tools through heavy 1 inch industrial wrenches, with the matched impact-rated socket sets, extension bars, and adapter ranges. Draper and SIP extend the range with workshop-grade alternatives. Product pages list the drive size (1/4, 3/8, 1/2, 3/4, or 1 inch — must match the socket size), the maximum torque output (in N·m or ft-lb), the working torque range (the operating torque at rated air pressure or battery state), the no-load speed (in RPM), the air consumption (for pneumatic — in CFM at 6.2 bar / 90 PSI), or the battery voltage and Ah capacity (for battery-powered), the body type (pistol-grip standard; inline for confined-space work), and the weight. Always use impact-rated sockets with impact tools — chrome-vanadium hand-socket equivalents will shatter under impact load and the fragments are dangerous. Impact sockets have black-oxide finish and thicker walls; the difference is visible. Trade pricing on multi-tool and workshop-kit orders is available; contact the team via WhatsApp 07754288583.

Impact Drives & Wrenches

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What drive size do I need?

Pneumatic or battery impact wrench — which is better?

Why must I use impact-rated sockets?

Can I get extension bars and adapters rated for impact use?

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

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

Impact Drives Wrenches & Consumables

Impact Drives & Wrenches

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