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Spline Box End Wrench, 1/4x5/16 in, 7-1/4L MPN:J1118SPL

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In Stock
Brand: Proto
Part #: J1118SPL
UPC: 662679572563
SKU
510-G0356657
Regular Price $120.39 Special Price $85.99

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Spline Box End Wrench, 1/4x5/16 in, 7-1/4L

Proto's Spline Box End Wrench is designed for high-tensile strength fasteners used in military, commercial aircraft, heavy machinery, automotive, and industrial applications where high-performance torque is required. The spline feature helps to tighten high-strength bolts to high torque loads, lowers the force required to turn standard fasteners, and turns fasteners with damaged corners. Additionally, the spline reduces foreign object debris (FOD) and provides a full polish finish for corrosion resistance and easy cleaning. This tool is ideal for applications where vibration is prevalent and high torque is necessary, such as in aerospace, automotive, and industrial maintenance.

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
  • Automotive

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: 7.20
  • Package Width: 0.50
  • Package Height: 0.30
  • Package Weight: 0.10
Product info last updated on February 22, 2026 8:09pm UTC Category: Hand Tools
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In stock