5/8-36 Female Spline, Weld On Coupler, fits 6.4:1, 10:1, 12:1, 15:1 Stiletto Rack-n-Pinion

C42-353-B Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion Machined from 4130 N Chromoly C42-355 Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion Machined from 1018 mild steel C42-355-B Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion Machined from 1018 mild steel C42-403-A Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion Machined from 4130 N Chromoly C42-403-B Spline is correctly sized to fit the Stiletto 5/8-36 spline pinion Machined from 4130 N Chromoly   The pressure angle of this spline is unique to Stiletto, this spline will not fit other 5/8-36 OEM type applications. We offer several types of weldable splined couplers to achieve a proper and secure connection between a steering shaft or drive unit and the steering box when a U-joint is not desired. Split-Bolt coupler:  Provides positive clamping on the splines, plus the added security of the bolt passing thru the retaining groove of the pinion. When space or weight savings is a primary concern, the Dual-Lock coupler or Straight coupler are other options to consider. The Straight coupler does not have built-in retention so the installer should incorporate a security method for the specific application. The splines in these couplers are precision broached to the correct size and we guarantee they will fit their intended purpose.  Dual-Lock coupler: The Dual-Lock coupler has two set screws with locking nuts offset 90 degrees from each other. This dual set screw design draws up the connection thereby eliminating the potential of undesirable lost motion with normal spline clearance. To prevent spline deformation the locking screws are positioned to locate in the external retaining groove of the pinion. The splines in these couplers are precision broached to the correct size and we guarantee they will fit their intended purpose. Straight coupler: This coupler has no built-in retention provision; the installer will need incorporate a security method of locking the coupler to the male pinion for the specific application.   The splines in these couplers are precision broached to the correct size - we guarantee they will fit their intended purpose.