1/2 in Drive, 7/8" Spline SAE, Socket, 12 Points, Steel, Chrome, 7/8 in MPN:J5428SPL

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Brand: Proto
Part #: J5428SPL
UPC: 662679573270
SKU
510-G0455743
Regular Price $144.19 Special Price $102.99

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1/2 in Drive, 7/8" Spline SAE, Socket, 12 Points, Steel, Chrome, 7/8 in

Proto's 7/8in Spline Socket is designed to service high tensile strength fasteners in military, commercial aircraft, and heavy machinery applications where vibration is prevalent. It helps tighten high strength bolts to high torque loads, lowers the force required to turn standard fasteners, and turns fasteners with damaged corners. By delivering twice the torque of 12 point wrenches on double box fasteners and more torque than hex wrenches on hex fasteners, this socket achieves high performance torque in automotive and industrial areas. Its precise fit reduces foreign object debris (FOD) and is suitable for applications where reliability and precision are crucial.

Top product features:

  • Spline design helps reduce foreign object debris (FOD) by providing a precise fit between the fastening tool and its fastener.
  • Spline sockets help lower the force required to turn standard fasteners by allowing the torque load to be moved away from the corners to help prevent fastener rounding.
  • Spline sockets deliver twice the torque of 12 point wrenches on double box fasteners, and more torque than hex wrenches on hex fasteners.

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 sockets 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 to help prevent fastener rounding. They also turn fasteners with damaged corners
Spline sockets on spline fasteners help deliver twice the torque of 12 point wrenches on double box fasteners, and more torque than hex wrenches on hex fasteners

Additional Features:

  • - Spline helps reduce foreign object debris (FOD) by having a precise fit between the fastening tool and its fastener


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: 1.20
  • Package Width: 1.20
  • Package Height: 1.50
  • Package Weight: 0.23
Product info last updated on February 4, 2026 12:41pm UTC Category: Hand Tools
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In stock