International Standard
ISO 4759-3:2016
Tolerances for fasteners — Part 3: Washers for bolts, screws and nuts — Product grades A, C and F
Reference number
ISO 4759-3:2016
Edition 4
International Standard
Read sample
ISO 4759-3:2016
Published (Edition 4, 2016)
This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 4759-3:2016

ISO 4759-3:2016
CHF 63
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ISO 4759-3:2016 specifies tolerances for flat washers of product grades A, C and F with nominal diameters of 1 mm to 150 mm inclusive, designed to be used in bolted joints in combination with bolts, screws, studs and nuts.

This part of ISO 4759 may be applied to non-flat washers however it does not include all the tolerances related to these washers.

It applies to non-captive and captive washers, and to standard and non-standard washers.

It does not apply to dynamic disc springs.

Washers of product grades F and A are intended to be used with bolts, screws, studs and nuts of product grades A and B; washers of product grade C are intended to be used with bolts, screws, studs and nuts of product grade C.

NOTE The product grade refers to a specific tolerance range related to dimensional and geometrical characteristics (product grade F for fine tolerances, product grade A for precise tolerances, product grade C for large tolerances).

Annex A presents tolerances taken from ISO 286‑1 and ISO 286‑2.

General information

  •  : Published
     : 2016-06
    : International Standard confirmed [90.93]
  •  : 4
     : 11
  • ISO/TC 2
  • RSS updates

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