PROTO, Industrial Tools

Phone: 800-800-TOOL

Proto® 15 Piece Full Polish Combination Spline Wrench Set - 12 Point


Features and benefits

  • 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.
  • 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.
  • Anti-Slip Design (ASD) open end.


Point Size Spline
Finish Full Polish
Unit of Measure Fractional
Weight [Lbs] 6.63
Piece Count 15
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