Bristol Spline Long Arm L Keys

BRISTOL SPLINE DRIVE

The substantial and effective wrench engagement inherent in the Bristol design addresses the problems caused by other systems such as cam-out, socket reaming and rounding of wrenches. Pioneered by Bristol, the multiple spline drive system is recognized by design engineers as the superior method of transmitting torque because nearly 100% of wrenching force is applied at right angles to the load bearing spline surfaces of the socket. Other drive systems dissipate a significant amount of force into radial thrust tending to expand the socket rather than tighten the screw.

 

If a standard Bristol spline key or Bristol Set doesn't meet your requirements, please contact us for a quotation on custom Bristol keys or Spline Sets. 

Our Bristol Spline keys are manufactured from high quality 8650 tool steel. Then they're heat treated to precise specifications, and finished with a black-oxide rust inhibitor. 

Bristol flute tools fit Bristol spline screws only. Depending on the size of the Bristol tool and screw, they're designed with either 4 splines or 6 splines. Bristol tools are also available in Chapman Bristol Spline Screwdriver bits and the #7341 Chapman MFG Bristol Spline screwdriver bit kit. 

All Bristol Wrench tools are Made in USA. 

Bristol Spline Long Arm L Keys