IS 15630 : 2025/ISO 7435 : 2024 Fasteners - Slotted Set Screws with Long Dog Point - Specification

Revised Standard from Last Update.

NATIONAL FOREWORD

This Indian Standard (First Revision) which is identical to ISO 7435 : 2024 ‘Fasteners - Slotted set screws with dog point’ issued by the International Organization for Standardization (ISO) was adopted by the Bureau of Indian Standards on the recommendation of General Engineering and Fasteners Standards Sectional Committee and approval of the Production and General Engineering Division Council.

Set screws also known as blind screws, are fasteners that consist entirely of a threaded rod. They do not have a head or a tip. Instead, they consist of a rod with uniform threading running the entire length of the screw. Set screws have several applications, one of the most common being to join two parts together. Assuming two parts have threaded holes in the appropriate size, they can be joined with a set screw. Half of the set screw is inserted into one of the parts, and the other half is inserted into the opposite part. The set screw will then join the two parts together while ensuring that they are flush.

Set screws can often prove especially useful in situations where a standard nut and bolt would impede the optimal functioning of an object or components, or else would not achieve the clean aesthetic the installer is aiming for on the visible/external faces of an item. They are almost always found being used in mechanical systems where two or more metal surfaces rub or press directly together, and where there isn’t room to fit a bolt or other type of protruding head between the two flush surfaces without limiting proper functionality or movement of the parts. Common specific examples of set screw use include affixing spindle cams and handles or securing gears and pulleys to a shaft.