Cylindrical drill bush DIN 179 form B, bore 3.1 mm, length 12 mm, outside dia 6 mm, ground

For repeatable holes of 3.1 mm diameter this bush is seated in the drill plate by its ground outside diameter of 6 mm. The drill stays guided across 12 mm of length, and the bore is rounded on both sides.

Benefits

• Bore rounded on both sides to form B, so the bush can be fitted either way round
• Guide bore of 3.1 mm to DIN 179 for the matching tool
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Outside diameter of 6 mm as a ground seat in the drill plate
• Guide length of about 3.9 drill diameters at 12 mm of length

Applications

• Hole patterns in assembly jigs and equipment frames
• Workshop production with changing workpieces
• Redrilling and opening up holes on existing jigs
• Pattern making and mould making

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.