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- HeaÂded Drill Bush 7619
DRILL BUSH WITH COLLAR
DIN 172 (simiÂlar to ISO 4247)

Item no.:
Type A: 7619.
Type B: 7629.
1) For drilÂling with toleÂrance ranÂge H 6 or H 7 in jig/fixture.
Version:
Type A: Bore hole rounÂded at one end, insiÂde and outÂside grinÂded to toleÂrance, with inserÂtiÂon chamfer.
Type B: Bore hole rounÂded at boths ends, insiÂde and outÂside grinÂded to toleÂrance, with inserÂtiÂon chamfer.
Material:
Case-harÂdenÂed steel as choÂsen by manufacturer
Hardness:
740 + 80 HV 10
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