SIST EN ISO 4757:1996
Cross recesses for screws (ISO 4757:1983)
Cross recesses for screws (ISO 4757:1983)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 11
- Дата публикации:
- 1 апреля 1996 г.
- ICS:
- 21.060.10
- Технический комитет:
- ISEL - Mechanical elements
Defines the type H and type Z; dimensions are illustrated by figures; tabulates gauge dimensions from No. 0 up to and including No. 4; includes a method of penetration gauging for both types.
Abstract
Overview
SIST EN ISO 4757:1996 is a European and international standard that specifies the requirements for cross recesses on screws. This standard aligns with and is endorsed by CEN (European Committee for Standardization). It defines two types of cross recesses-Type H and Type Z-and provides detailed dimensions and gauging methods for these recesses. The standard covers sizes from No. 0 through No. 4, ensuring uniformity and compatibility in screw designs across industries.
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