Cylindrical drill bush DIN 179 form B, bore 7.7 mm, length 16 mm, outside dia 12 mm, ground

A drill of 7.7 mm diameter runs guided through 16 mm of this bush and meets the hole at the intended point. The design follows DIN 179, form B, and the bore is rounded on both sides.

Benefits

• Outside diameter of 12 mm as a ground seat in the drill plate
• Guide bore of 7.7 mm to DIN 179 for the matching tool
• Bore rounded on both sides to form B, so the bush can be fitted either way round
• Overall length of 16 mm in the medium version of the range short, medium and long
• Guide length of about 2.1 drill diameters at 16 mm of length

Applications

• Drilling jigs and drill templates in series production
• Jig and tool making
• Repeatable hole patterns in sheet metal, profiles and housings
• Maintenance work where hole patterns are reworked

Standard and material

Dimensions and design follow DIN 179. The material is special case-hardening steel, the hardness is 740 ± 80 HV 10, and the functional surfaces are ground.