Collar drill bushing DIN 172 form A, bore 8 mm, length 10 mm, collar 15 mm, hardened steel

This bushing of the short series guides drills of 8 mm diameter over 10 mm. The collar with 3.0 mm height stops the bushing from being pushed down through the holder during machining and sets its height clearly.

Benefits

• Guiding length of 10 mm, short design
• Ground guiding bore of 8 mm within the tolerances of DIN 172
• All-round collar of 15 mm diameter and 3.0 mm height acting as a stop
• Press fit of 12 mm outside diameter in the holder of the jig
• Hardened case-hardening steel at 740 ± 80 HV 10 with a ground surface
• Form A design of DIN 172 with the bore rounded on one side, on the side of the collar

Applications

It is used wherever holes of 8 mm have to be produced without centre punching and without wandering, for example in jigs for series parts, in assembly gauges or in prototype work.

Standard and material

The design complies with DIN 172 form A. In form A the bore is rounded only on the side of the collar. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.