Drill bush DIN 179 form B, bore 6.8 mm, length 16 mm, outside dia 12 mm, case-hardened steel

The medium version of 16 mm overall length is intended for jig plates of medium thickness and guides drills of 6.8 mm diameter. The 12 mm seat and the 6.8 mm bore are ground, so the bush can be pressed into the fixture without any rework.

Benefits

• Bore to form B, that is rounded on both sides
• Guide bore of 6.8 mm to DIN 179 for the matching drill
• Outside diameter of 12 mm as a ground seat in the jig plate
• 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 rounded on both sides, so the bush can be fitted either way round

Applications

• Gauge making and prototype work in small batches
• Drilling jigs and drilling templates in series production
• Jig and fixture construction as well as tool making
• Holes in sheet metal, profiles and housings that have to be repeatable in position and diameter

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.