QJO10A - Williams - 5/16" Open‑End Wrench Head – J‑Shank

Williams QJO10A 5/16" Open‑End Wrench Head – J‑Shank
The Williams QJO10A 5/16" Open‑End Wrench Head is designed for technicians working with very small imperial fasteners who require exceptional precision, access, and durability. Built with a secure J‑shank connection, this wrench head integrates seamlessly with Williams torque wrenches and torque multipliers—ensuring stable, accurate, and repeatable torque delivery in industrial and field‑service environments.

Its compact, slim open‑end profile provides outstanding reach in extremely tight, recessed, or obstructed areas where box‑end heads or larger torque attachments cannot operate. Machined from premium alloy steel, the QJO10A maintains dimensional accuracy and resists wear, rounding, and deformation, even under consistent torque cycles.

Ideal for instrumentation work, small‑equipment servicing, electrical/mechanical assembly, utilities, and precision industrial maintenance.

Key Features

• 5/16" Open‑End Wrench Head – Perfect for micro‑size imperial fasteners used in instrumentation, small pumps, sensors, brackets, assemblies, and light machinery.
• J‑Shank Attachment – Provides a stable, vibration‑resistant connection with Williams torque tools.
• Slim, High‑Precision Profile – Reaches fasteners in very tight or recessed spaces where box‑end torque heads cannot fit.
• Premium Alloy Steel Construction – Engineered for strength and resistance to rounding, deformation, and wear.
• Precision‑Machined Accuracy – Ensures smooth, consistent, and repeatable torque application for sensitive and critical fastener connections.
• Industrial‑Grade Durability – Suitable for utilities, electronics maintenance, manufacturing environments, power‑generation facilities, oil & gas sites, and field‑service tasks.

Ideal Applications

• Instrumentation & control systems
• Electrical panel and equipment servicing
• Small machinery and device repair
• Utilities & power‑generation maintenance
• Oil & gas field service
• Tight‑clearance precision torque applications