ISO 887:2000

Name: ISO 887:2000 — Plain washers for metric bolts, screws and nuts for general purposes — General plan
SKU: ISO 887:2000
Price: 25 EUR
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Plain washers for metric bolts, screws and nuts for general purposes — General plan

Название (английский):

ISO 887:2000

Plain washers for metric bolts, screws and nuts for general purposes — General plan

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 8 июня 2000 г.
Издание:: ISO IS 887 edition 2 version 1
ICS:: 21.060.30

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Описание (английский):

La présente Norme internationale spécifie la gamme complète de dimensions nominales des rondelles plates de grades A et C pour vis et écrous de diamètre nominal de filetage de 1 mm à 150 mm inclus pour usages généraux.La présente Norme internationale n'est pas applicable aux rondelles pour les vis avec rondelle incorporée pour ce qui est des diamètres et des épaisseurs de trous de passage.L'information sur l'emploi des rondelles plates est donnée dans l'annexe A.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 887:2000 - Plain washers for metric bolts, screws and nuts for general purposes - General plan defines the nominal dimensional framework and preferred combinations for plain (flat) washers used with metric bolts, screws and nuts. It covers washers for nominal thread diameters from 1 mm to 150 mm and addresses product grades A and C. The standard provides the general plan (preferred outside diameters, thicknesses and clearance-hole selection rules) and references the appropriate tolerance and product standards.

Key topics and requirements

Scope: Specifies the full range of nominal dimensions (1 mm to 150 mm) for product-grade A and C plain washers used for general purposes. Not applicable to screw-and-washer assemblies for hole diameters and thicknesses.

Clearance holes: Clearance hole diameters are chosen in accordance with ISO 273 (clearance-hole series). ISO 887 indicates:

fine series for product grade A washers with nominal thickness < 6 mm (nominal sizes < 39 mm)
medium series for product grade A with thickness ≥ 6 mm (sizes ≥ 39 mm) and for product grade C

Outside diameters and thicknesses: Preferred outside diameters are listed in a table (Table 1). Typical nominal thickness values (Table 2) include 0.3, 0.5, 0.8, 1, 1.2, 1.6, 2, 2.5, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18 mm (selected series of values).

Preferred combinations: Table 3 defines preferred nominal combinations (clearance hole, outside diameter and thickness) grouped into four series - small, normal, large and extra large - correlated with the outside diameter.

Tolerances: Dimensional tolerances for plain washers are specified by ISO 4759-3 (tolerances for fasteners - part 3).

Informative guidance: Annex A supplies guidance on washer use, including compatibility of washer product grades and hardness classes with bolt/screw/nut property classes.

Practical applications and users

ISO 887:2000 is used by:

Mechanical designers and engineers selecting washers for bolted joints in machinery, structures and equipment

Fastener manufacturers for establishing product ranges and tooling

Quality control and inspection teams verifying nominal dimensions and conformity

Procurement and specification writers creating parts lists and purchasing standards

Maintenance and assembly planners ensuring correct washer selection by size, grade and hardness compatibility

Practical benefits include standardized interchangeability, reduced specification errors, and clearer supplier/manufacturer communication about washer sizes and preferred combinations.

Related standards

ISO 273 - Clearance holes for bolts and screws

ISO 4759-3 - Tolerances for plain washers (product grades A and C)

Product standards for plain washers: ISO 7089, 7090, 7091, 7092, 7093‑1, 7093‑2, 7094

Keywords: ISO 887:2000, plain washers, metric bolts, washer dimensions, clearance hole, washer thickness, product grade A, product grade C, ISO 4759-3, ISO 273, fasteners.

ISO 887:2000

Abstract

Похожие стандарты

Overview

Key topics and requirements

Practical applications and users

Related standards

Технические детали

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ISO 4759-3:2016

Tolerances for fasteners — Part 3: Washers for bolts, screws and nuts — Product grades A, C and F

ISO 7089:2000

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