Collar drill bushing DIN 172 form A, bore 8.1 mm, length 12 mm, collar 18 mm, hardened steel

Made for holes of 8.1 mm, this bushing guides the tool over 12 mm. The short series combines a press fit of 15 mm outside diameter with a 18 mm collar that holds the bushing in the plate.

Benefits

• Bore 8.1 mm, ground and dimensionally accurate to DIN 172
• Overall length 12 mm in the short series
• Outside diameter 15 mm for the press fit in the drill plate
• Collar 18 mm with 3.0 mm height for axial location
• Case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Form A to DIN 172, the bore is rounded on the collar side so the tool enters easily

Applications

It is used wherever holes of 8.1 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.