Cylindrical drill bush DIN 179 form A, bore 4 mm, length 12 mm, outside dia 7 mm, ground

Made of hardened special case-hardening steel, this bush accepts drills of 4 mm and holds them on axis over 12 mm of length. The outside diameter of 7 mm forms the ground seat, and the bore is rounded on one side to DIN 179 form A.

Benefits

• Guide bore of 4 mm to DIN 179 for the matching tool
• Outside diameter of 7 mm as a ground seat in the drill plate
• Bore rounded on one side to form A, with a fixed fitting direction in the jig
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground

Applications

• Fixed drill plates and hinged drilling jigs
• One-off and small batch production in mechanical engineering
• Drilling fitted holes on assemblies with a fixed hole position
• Inspection and marking templates in assembly

Standard and material

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