ISO 10644:2009

Name: ISO 10644:2009 — Screw and washer assemblies made of steel with plain washers — Washer hardness classes 200 HV and 300 HV
SKU: ISO 10644:2009
Price: 12600 RUB
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Screw and washer assemblies made of steel with plain washers — Washer hardness classes 200 HV and 300 HV

Название (английский):

ISO 10644:2009

Screw and washer assemblies made of steel with plain washers — Washer hardness classes 200 HV and 300 HV

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 7
Дата публикации:: 16 июня 2009 г.
Издание:: ISO IS 10644 edition 2 version 1
ICS:: 21.060.30

Тип поставки:

Full version12 600 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

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Срок поставки:2 раб. дн. (перевод)

Цена:12 600 ₽

Описание (английский):

ISO 10644:2009 specifies the requirements for metric screw and plain washer assemblies made of steel with coarse thread M2 to M12 inclusive, flat seating heads, property classes up to and including 10.9 and washer hardness classes 200 HV or 300 HV. The plain washers are captive, i.e. prevented from disassembly and free to rotate.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

ISO 10644:2009 specifies requirements for metric screw and plain washer assemblies made of steel where the plain washer is captive (prevented from disassembly but free to rotate). It covers coarse thread sizes M2 to M12, flat seating heads, and screw property classes up to 10.9. The standard defines two washer hardness classes - 200 HV and 300 HV - and the permitted combinations of screw property class and washer hardness.

Key SEO keywords: ISO 10644:2009, screw and washer assemblies, captive plain washers, washer hardness 200 HV 300 HV, metric fasteners M2–M12.

Key topics and technical requirements

Scope and geometry

Applies to metric assemblies with coarse threads M2–M12 and flat seating heads.
Washer dimensions follow ISO 10673; screws conform to respective product standards (e.g., ISO 4014, ISO 4017, ISO 4762).
Bolts/screws may have a reduced shank so the captive washer can rotate freely; provisions cover underhead radius and transition diameters to avoid interference.

Mechanical and material requirements

Screw mechanical properties referenced to ISO 898-1 (testing with washer removed for referee purposes).
Washer hardness rules: for screws ≤ 8.8, washers may be 200 HV or 300 HV; for property classes 9.8 and 10.9, washers shall be 300 HV.

Manufacturing methods (Annex A)

Method 1: assemble screw blank with washer, roll threads, then heat-treat.
Method 2: manufacture components separately, heat-treat, then roll threads in hardened condition.

Coatings and surface treatments

Coatings referenced: ISO 4042 (electroplated), ISO 10683 (zinc flake), ISO 9717 (phosphate). Other coatings by agreement.

Designation

Standardized designation format includes reference to ISO 10644, screw characteristics, screw and washer symbols, and washer hardness (examples provided in the standard).

Practical applications

Used where a captive plain washer is required for assembly reliability, easier handling, or to prevent loss of components in production and maintenance.

Common in automotive, machinery, electrical panels, consumer products and any application needing standardized fastener assemblies with controlled washer hardness for load distribution and bearing performance.

Ensures consistent torque/clamp load behavior by controlling washer hardness, dimensions and compatibility with screw underhead geometry.

Related standards

This summary helps engineers and procurement professionals quickly understand ISO 10644:2009’s scope, requirements, and practical use for standardized captive screw-and-washer assemblies.

ISO 10644:2009

Abstract

Похожие стандарты

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Технические детали

BS EN ISO 10673:2009

Plain washers for screw and washer assemblies. Small, normal and large series. Product grade A.

BS EN ISO 4014:2011

Hexagon head bolts. Product grades A and B

BS EN ISO 4017:2014

Fasteners. Hexagon head screws. Product grades A and B

BS EN ISO 4762:2004

Hexagon socket head cap screws

BS EN ISO 898-1:2013

Mechanical properties of fasteners made of carbon steel and alloy steel - Bolts, screws and studs with specif…

BS EN ISO 4042:2018

Fasteners. Electroplated coating systems

BS EN ISO 10683:2018-TC

Tracked Changes. Fasteners. Non-electrolytically applied zinc flake coating systems.

BS EN ISO 9717:2017

Metallic and other inorganic coatings. Phosphate conversion coating of metals