QXXM21A - Williams - 21 mm Box‑End Torque Adapter with X‑Shank

The Williams QXXM21A Torque Adapter is designed for accurate, repeatable torque application on 21 mm fasteners used throughout industrial machinery, hydraulic systems, manufacturing equipment, and mechanical repair operations.

Its box‑end design provides wrap‑around fastener engagement, greatly improving grip stability and reducing rounding compared to open‑end torque attachments. This makes the QXXM21A ideal for torque‑critical applications where maintaining fastener integrity is essential for equipment performance and safety.

The X‑Shank interface ensures a secure, rigid connection to Williams torque wrench systems, enhancing torque accuracy and stability whether using manual, digital, or hydraulic torque tools. Manufactured from high‑strength alloy steel, this torque head withstands heavy torque loads, harsh operating conditions, and long‑term industrial use without compromising precision.

This model is especially valuable for technicians who service industrial equipment, hydraulic actuators, mechanical linkages, heavy‑equipment components, and power‑generation machinery.

Key Features

• Size: 21 mm
• Type: Torque adapter / torque head
• Head Style: Box End
• Shank Style: X‑Shank
• Full‑contact engagement reduces rounding and enhances accuracy
• Precision‑machined for stable, repeatable torque delivery
• Constructed from high‑strength alloy steel for maximum durability
• Compatible with Williams X‑Shank torque systems
• Excellent for industrial machinery, hydraulic system service, mechanical repair, and heavy‑equipment applications