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Box End Wrench, 3/8 x 7/16 in., 4-5/8 L MPN:J1122

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In Stock
Brand: Proto
Part #: J1122
UPC: 662679060053
SKU
510-G1442262
$77.37 for Order Qty of 3
Regular Price $36.11 Special Price $25.79

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Box End Wrench, 3/8 x 7/16 in., 4-5/8 L

Proto's Box End Wrench is designed for use on high-tensile strength fasteners found in military and commercial aircraft, heavy machinery, and automotive applications where high performance torque is required. The spline tool helps tighten bolts to high torque loads, reduces the force needed to turn standard fasteners, and turns fasteners with damaged corners. It also features a precise fit to minimize foreign object debris and a full polish finish for corrosion resistance and easy cleaning. Ideal for applications where vibration is prevalent, this wrench is a valuable tool for technicians and mechanics working with high-strength fasteners.

Top product features:

  • Spline fasteners help tighten high strength bolts to high torque loads
  • They help lower the force required to turn standard fasteners by allowing the torque load to be moved away from the corners, helping prevent fastener rounding
  • They also turn fasteners with damaged corners

Top product applications:

  • Military and commercial aircraft
  • Heavy machinery applications where vibration is prevalent
  • Automotive areas where high performance torque needs to be achieved

Proto Spline Tools are designed to service high tensile strength fasteners used widely on military and commercial aircraft and in heavy machinery applications where vibration is prevalent. They are also used in automotive and industrial areas where high performance torque needs to be achieved
Spline fasteners help tighten high strength bolts to high torque loads
They help lower the force required to turn standard fasteners by allowing the torque load to be moved away from the corners, helping prevent fastener rounding. They also turn fasteners with damaged corners

Additional Features:

  • - Spline helps reduce foreign object debris (FOD) by having a precise fit between the fastening tool and its fastener
  • - Full polish finish provides corrosion resistance and an easy to clean surface


Additional Information

  • Country of Origin: US
  • Drop Ship Item: No
  • Blind Ship Eligible: No
  • LTL Freight Required: No
  • Lead Time: Ships in 1 days
  • Minimum Order Quantity: 1
  • Unit of Measure: EA
  • Package Length: 4.70
  • Package Width: 0.70
  • Package Height: 0.30
  • Package Weight: 0.09
Product info last updated on March 5, 2026 1:55am UTC Category: Hand Tools
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In stock