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ISO Fundamental Tolerances

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DIN172A Headed Drill Bush, Steel, Hardened



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Type Bore radiused at one end

Type B Bore radiused at both ends, available on request

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Product Description

DIN 172A Headed Drill Bush, Steel, Hardened

Headed drill bush, made from best quality case-hardening steel. These drill bushes are supplied with a lead in chamfer or relief. 

For applications involving positioning, we recommend ISO8734 dowel pins or GN771.1  guide pins.

For mounting bushings with tolerance n6, a hole with tolerance H7 corresponding to the external diameter is usually provided.


Steel, hardened (HRC 62 ±2)

Fit size d1, d2 ground

Other bores d1 available on request.

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