SIST EN 26157-3:1996

Name: SIST EN 26157-3:1996 — Fasteners - Surface discontinuities - Part 3: Bolts, screws and studs for special requirements (ISO 6157-3:1988)
SKU: SIST EN 26157-3:1996
Price: 30600 RUB
Availability: InStock

Fasteners - Surface discontinuities - Part 3: Bolts, screws and studs for special requirements (ISO 6157-3:1988)

Название (английский):

Fasteners - Surface discontinuities - Part 3: Bolts, screws and studs for special requirements (ISO 6157-3:1988)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 17
Дата публикации:: 1 апреля 1996 г.
ICS:: 21.060.10
Технический комитет:: ISEL - Mechanical elements

Тип поставки:

Full version30 600 ₽Read online 24h1 200 ₽Read online 72h1 800 ₽

Язык документа:

ruen

Срок поставки:3 раб. дн. (перевод)

Цена:30 600 ₽

Описание (английский):

Establishes limits for various types of products and applies to these products with: nominal thread diameters of 5 mm and larger, product grades A and B, nominal lengths 1 10 d (or longer if specified), property class 12.9, and property classes 8.8, 9.8, and 10.9 (when specified or agreed); the annex contains a sampling plan.

Abstract

Похожие стандарты

Стандарты, упомянутые в описании

Overview

EN 26157-3:1991 (identical with ISO 6157-3:1988) is a CEN standard that defines limits for surface discontinuities (surface defects) on high-strength fasteners. It specifically covers bolts, screws and studs for special requirements, establishing acceptance criteria and inspection guidance to ensure integrity and reliability of threaded fasteners used in critical applications. The standard also includes an annex with a sampling plan for inspection procedures.

Key Topics and Requirements

Scope of application

Applies to fasteners with nominal thread diameters of 5 mm and larger.
Covers product grades A and B.
Intended for nominal lengths 1–10 d (or longer when specified or agreed).

Property classes

Directly applicable to property class 12.9.
Also applicable to property classes 8.8, 9.8 and 10.9 when specified or agreed between parties.

Surface discontinuities

Sets limits for types and sizes of surface defects (cracks, laps, seams, folds, cold shuts, etc.) that may affect fastener performance.
Defines accept/reject criteria based on severity and location of discontinuities.

Inspection and sampling

Includes an annex with a sampling plan to guide batch inspection and quality control.

Reference harmony

Harmonized with ISO 6157-3:1988, ensuring international alignment on defect classification and acceptance.

Applications

Manufacturers use EN 26157-3:1991 to set production quality controls, define acceptable surface conditions, and reduce risk of in-service failure for high-strength fasteners.

Quality and inspection engineers implement the sampling plan and acceptance criteria during incoming inspection and final inspection.

Purchasing and procurement teams reference the standard in technical specifications and purchase orders to ensure supplied bolts, screws and studs meet agreed surface quality.

Design and maintenance professionals rely on these limits when specifying fasteners for safety- or performance-critical assemblies (e.g., heavy machinery, transportation, energy infrastructure) that require high-strength property classes.

Related Standards

ISO 6157-3:1988 - the international standard identical in content.

Other parts of the EN 26157 series (surface discontinuities for different product groups) - consult for washers, nuts, rivets, or general fastener requirements.

This standard is essential for anyone specifying, producing, inspecting or procuring high-strength bolts, screws and studs where surface integrity directly affects safety and performance. Keywords: EN 26157-3:1991, fasteners, surface discontinuities, bolts screws studs, property class 12.9, thread diameter ≥5 mm, sampling plan.

SIST EN 26157-3:1996

Abstract

Похожие стандарты

Overview

Key Topics and Requirements

Applications

Related Standards

Технические детали

EN 26157-3:1991

Fasteners - Surface discontinuities - Part 3: Bolts, screws and studs for special requirements (ISO 6157-3:19…

ISO 6157-3:1988

Fasteners — Surface discontinuities — Part 3: Bolts, screws and studs for special requirements

SIST EN 26157-1:1996

Fasteners - Surface discontinuities - Part 1: Bolts, screws and studs for general requirements (ISO 6157-1:19…