Drill bush DIN 179 form A, bore 12 mm, length 25 mm, outside dia 18 mm, hardened steel

Made of hardened special case-hardening steel, this bush accepts drills of 12 mm and holds them on axis over 25 mm of length. The outside diameter of 18 mm forms the ground seat, and the bore is rounded on one side to DIN 179 form A.

Benefits

• Guide bore of 12 mm to DIN 179 for the matching tool
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground
• Wall thickness of 3 mm between the 12 mm bore and the 18 mm seat
• Bore rounded on one side to form A, with a fixed fitting direction in the jig
• Overall length of 25 mm in the long version of the range short, medium and long

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

The basis is DIN 179 for cylindrical drill bushes. Form A means a bore that is rounded on one side. Made of special case-hardening steel, hardened to 740 ± 80 HV 10 and ground.