Collar drill bushing DIN 172 form A, bore 3.7 mm, length 16 mm, collar 10 mm, hardened steel

With a ground bore of 3.7 mm this bushing holds the tool on position over a guiding section of 16 mm. The collar of 10 mm diameter and 2.5 mm height stops the bushing from travelling through the fixture while drilling.

Benefits

• Bore 3.7 mm, ground and dimensionally accurate to DIN 172
• Outside diameter 7 mm for a press fit in the drill plate
• Collar 10 mm with 2.5 mm height for axial location
• Form A to DIN 172 with the bore rounded on the collar side, so the tool enters easily
• Overall length 16 mm in the long series
• Case-hardening steel hardened to 740 ± 80 HV 10

Applications

It is used wherever holes have to be produced repeatedly in the same position, for example in fixture construction, assembly and gauge making.

Standard and material

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