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Norm
ÖNORM EN ISO 7092
Issue date: 2000 12 01
Plain washers - Small series - Product grade A (ISO 7092:2000)
This International Standard specifies the characteristics of small-series, product-grade-A plain washers in the 200 HV and 300 HV hardness classes and of nominal sizes (n...
Valid
Publisher:
Austrian Standards International
Format:
Digital | 9 Pages
Language:
German
| English
| Download GER/ENG
Optionally co-design standards:
ICS
This International Standard specifies the characteristics of small-series, product-grade-A plain washers in the 200 HV and 300 HV hardness classes and of nominal sizes (nominal thread diameters) ranging from 1,6 mm to 36 mm inclusive.
Washers of hardness class 200 HV are suitable for
cheese head screws in property classes up to and including 8.8, or made of stainless steel;
hexagon socket head cap screws in property classes up to and including 8.8, or made of stainless steel;
hexalobular socket head cap screws in property classes up to and including 8.8, or made of stainless steel;
case-hardened thread rolling screws with cheese heads.
Washers of hardness class 300 HV are suitable for
hexagon socket head cap screws in property classes up to and including 10.9;
hexalobular socket head cap screws in property classes up to and including 10.9.
If dimensions other than those listed in this International Standard are required, they should be selected from those
given in ISO 887.
When soft material pieces are clamped, or large clearance holes in the workpiece are used, the user should check
the technical suitability of this type of washer.
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1997 11 20
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Tolerances for fasteners — Part 3: Plain washers for bolts, screws and nuts — Product grades A and C
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1997 11 20
Metallic materials — Vickers hardness test — Part 1: Test method
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Issue date :
2018 08 13
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