1" Drive 78mm Impact Socket - Genius Tools

The Genius Tools 847078 1" Drive 78mm Impact Socket is engineered for demanding professional service environments, designed to handle high-torque applications with large metric fasteners. This robust socket is an essential tool for heavy-duty vehicles and industrial machinery, offering sustained performance with 1" drive pneumatic or electric impact wrenches in rigorous fleet, truck, and industrial settings. Its construction from durable Cr-Mo alloy steel ensures reliability and longevity under repetitive impact loads.

Key Features

• Precision Sizing: Features a 1" drive and 78mm opening, specifically sized for servicing large hub and spindle nuts, axle nuts, and other oversized fasteners commonly found on Class 7–8 trucks, buses, and off-highway equipment.
• Cr-Mo Alloy Steel Construction: Manufactured from chromium-molybdenum alloy steel with an oil-quenched heat treatment, guaranteeing the high strength and toughness required for repetitive impact loads in heavy-duty maintenance.
• Impact-Ready Design: Built for optimal compatibility with high-torque impact wrenches and torque multipliers, this socket is ideal for commercial truck, bus, and industrial maintenance operations, absorbing shock loads without deforming or breaking.
• Optimized Fastener Engagement: Engineered with radius corners and chamfered openings to efficiently transfer torque to the fastener's flats, which minimizes the risk of rounding and ensures faster, more secure socket engagement.
• Corrosion Resistance: A matte black oxide finish provides enhanced resistance against corrosion and reduces glare, contributing to increased durability and improved visibility in various workshop and field conditions.
• Clear Identification: Permanent size marking, clearly stamped at 78mm, allows for quick and accurate identification, streamlining workflow on tool carts, racks, and service trucks.

Applications

This 78mm impact socket is commonly utilized for critical fasteners such as large hub and spindle nuts, industrial flange bolts, and suspension and driveline components. It is an essential tool for service on Class 7–8 trucks, buses, agricultural equipment, and heavy construction/mining machinery. This socket is well-suited for fleet maintenance shops, industrial MRO (Maintenance, Repair, and Operations) teams, and mobile service technicians requiring a dependable, large-format metric impact socket for high-torque service work.

Specifications

• Manufacturer: Genius Tools
• Model Number: 847078
• Drive Size: 1"
• Socket Size: 78mm
• Overall Length: 105mm (4.13")
• Material: Chromium Molybdenum (Cr-Mo) Alloy Steel
• Finish: Matte black oxide, heat-treated (oil quenched)