QJRXS12A - Williams - 3/8" drive, 6‑point flare nut torque head

The Williams QJRXS12A is a 3/8" drive, 6‑point flare nut torque head designed for interchangeable‑head torque wrenches using the J‑Shank (0.425") interface. This head allows precise torque application on flare‑style fittings commonly used in HVAC, refrigeration, automotive, hydraulic, and industrial service.

Key Specifications

• Drive Size: 3/8"
• Style: 6‑Point Flare Nut Head
• Shank Type: J‑Shank (0.425")
• Max Working Torque: 29 ft‑lbs
• Outside Diameter: 3/4"
• Head Depth: 5/16"

Features & Benefits

• Designed for interchangeable‑head torque wrenches
• Fits Williams and CDI preset or adjustable torque bodies
• Quick‑change locking‑pin system for fast swaps
• Ideal for torque‑critical flare fittings
• Prevents rounding with strong 6‑point engagement
• Made in the USA (manufacturer listings confirm origin)