INTERN CEMS A-31 PART I PDF

This specification covers the Corporation's requirements for the material and properties of steel bolts and studs. Dimensional requirements and general specifications for standard bolts are covered in the Engineering Standard Parts (ESP) book, Section B. Nonstandard bolts and studs will be covered by engineering drawings which should refer to this specification for material and property requirements. For purposes of this specification, the term "bolts" also includes cap screws and SEMS (i.e., term used to describe screw and washer assemblies); the term ―studs‖ also includes quenched and tempered U-bolts.

INTRODUCTION

This specification provides guidance to the selection and use of fasteners in Navistar design. Bolted joints are used extensively in the assembly of our products and provide for adjustment, replacement and ease of repair. Material properties of both inch and metric fasteners are described in this specification.

Restricted Chemical Substances

Effective January 1, 2007, all product supplied to the requirements of this specification must comply with the requirements of the CEMS B-50 specification.