Drill bush DIN 179 form A, medium type, bore 10.3 mm, length 20 mm, outside dia 18 mm

Made of hardened special case-hardening steel, this bush accepts drills of 10.3 mm and holds them on axis over 20 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 10.3 mm to DIN 179 for the matching tool
• Overall length of 20 mm in the medium version of the range short, medium and long
• Bore rounded on one side to form A, with a fixed fitting direction in the jig
• Wall thickness of 3.9 mm between the 10.3 mm bore and the 18 mm seat
• Special case-hardening steel, hardened to 740 ± 80 HV 10 and ground

Applications

• Series drilling on jigs with high piece numbers
• Drill templates for assembly work on site
• Guiding twist drills and reamers in the jig
• Repair of worn drill plates by replacement of the same size

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.