Facom 55A Series Offset Box Wrench - Offset and thin-wall box end improves access to recessed fasteners. 12pt (30 degree increments). OGV profile transmits torque through the fastener flats instead of the corners to reduce wear. This is a popular size for HVACR applications.
Current production - open stock. Facom's 55A series wrenches are available in a variety of box and module sets.
The FACOM 55A.1/4X5/16 is a professional-grade, fractional (SAE) deep offset double ring wrench featuring a 1/4-inch opening on one end and a 5/16-inch opening on the other. This specific configuration is highly popular for precise HVACR (heating, ventilation, air conditioning, and refrigeration) service applications and line assembly setups where small fractional fasteners are deeply recessed.
- Size Configuration: Dual fractional openings measuring 1/4" x 5/16".
- Overall Length: 172 mm (approx. 6.77 inches), providing compact, nimble leverage for confined engine bays or equipment boxes.
- Deep Elbow Offset: Engineered with a pronounced Z-axis bend beneath the shank to clear obstructions and keep your knuckles safely away from adjacent panels or hot pipes.
- Ring Head Thickness (E x E1): 5.5 mm (1/4" end) and 6.5 mm (5/16" end).
- Ring Head Outer Diameter (B x B1): Ultra-narrow profile measuring 11.0 mm and 14.0 mm to fit inside restricted counterbores.
- OGV® 12-Point Profile: Features FACOM’s signature wall-drive profile, which redirects tightening forces away from the weak corners of small fasteners onto their broader flat sides, avoiding sudden slips or stripped heads.
- Material & Finish: Forged from hardened chrome-vanadium alloy steel finished with a smooth satin-chrome surface for superior anti-slip grip and chemical protection.
- Standard Compliance: Certified to international standard tolerances under ASME B107.100.
