ISO 7091:2000 pdf download – Plain washers – Normal series- Product grade c
ISO 7091:2000 pdf download – Plain washers – Normal series- Product grade c.
ISO 7091 specifies the characteristics of normal-series, product-grade-C plain washers in the
100 HV hardness class and of nominal sizes (nominal thread diameters) ranging from 1,6mm to 64mm inclusive.
Washets of hardness class 100 HV are suitable for
hexagon bolts and screws of product grade C in property classes up to and including 6 8; hexagon nuts of product grade C in property classes up to and including 6;
— case-hardened thread rolling screws,
If dimensions other than those listed in ttNs Intemabonal Standard are required. they should be selected from those given In ISO 687.
When soft material pieces are clamped, or large clearance holes in the workpiece are used, the user should check the technical suitability of this tipe of washer.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However. paliles to agreements based on this International Standard are encouraged to investigate the possibIlity of applying the most recent editions of the nom,ative documents indicated below, For undated references, the latest edition of the normative document referred to applies. Members of ISO and lEG maintain registers of currently valid International Standards.
ISO 887:2000, Plain washers for metric bolts, screws and nuts for general purposes — General plan.
ISO 3269:2000, Fasteners — Acceptance inspection.
ISO 4042:1999, Fasteners — Electroplated coatings.
ISO 4759-3:2000, Tolerances for fasteners — Part 3: Plain washers for bolts, screws and nuts — Product grades A and C.
ISO 6507-1:1997, Metallic materials — Vickers hardness test — Part 1: Test method. ISO I 0683—fl, Fasteners — Non-electrolytically applied zinc flake coatings.
See Figure 1 and Tables 1 and 2.