Collar drill bushing form A to DIN 172, bore 4.8 x 12 mm, collar 11 mm, case-hardening steel

Made for holes of 4.8 mm, this bushing guides the tool over 12 mm. The medium series combines a press fit of 8 mm outside diameter with a 11 mm collar that holds the bushing in the plate.

Benefits

• Ground guiding bore of 4.8 mm within the tolerances of DIN 172
• Guiding length of 12 mm, medium design
• Press fit of 8 mm outside diameter in the holder of the jig
• All-round collar of 11 mm diameter and 2.5 mm height acting as a stop
• 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 4.8 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

Dimensions and tolerances follow DIN 172 in form A. In form A the bore is rounded only on the side of the collar. The bushing is made of hardened and ground case-hardening steel with a hardness of 740 ± 80 HV 10.