Collar drill bushing DIN 172 form B, bore 6.3 mm, length 20 mm, collar 15 mm, hardened steel

With a ground bore of 6.3 mm this bushing holds the tool on position over a guiding section of 20 mm. The collar of 15 mm diameter and 3.0 mm height stops the bushing from travelling through the fixture while drilling.

Benefits

• Bore 6.3 mm, ground and dimensionally accurate to DIN 172
• Outside diameter 12 mm for a press fit in the drill plate
• Collar 15 mm with 3.0 mm height for axial location
• Form B to DIN 172 with the bore rounded on both sides, so the bushing can be used from either end
• Overall length 20 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 B, in which the bore is rounded on both sides. The material is case-hardening steel, hardened to 740 ± 80 HV 10 and ground.