Drill bush DIN 179 form B, bore 7.2 mm, length 16 mm, outside dia 12 mm, case-hardened steel

With an outside diameter of 12 mm the bush is seated in the bore of the jig plate and guides the drill of 7.2 mm nominal diameter. The bore follows form B of DIN 179 and is therefore rounded on both sides, which makes it easier to enter the drill.

Benefits

• Overall length of 16 mm in the medium version of the three lengths short, medium and long
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Bore to form B, that is rounded on both sides
• Guide bore of 7.2 mm to DIN 179 for the matching drill
• Outside diameter of 12 mm as a ground seat in the jig plate
• Bore rounded on both sides, so the bush can be fitted either way round

Applications

• Holes in sheet metal, profiles and housings that have to be repeatable in position and diameter
• Maintenance and repair work when hole patterns are reworked
• Gauge making and prototype work in small batches
• Drilling jigs and drilling templates in series production

Standard and material

The bush is made to DIN 179 in form B, with the bore rounded on both sides. The material is special case-hardening steel, hardened to 740 ± 80 HV 10 and ground.