This SAE Part Standard covers selected metric screws, hex bolts, and nuts manufactured in accordance with American Society for Testing and Materials (ASTM) and SAE fastener standards. This document covers fastener materials often used in ship systems and equipment but its use may be applied wherever fasteners of the covered materials are used. This document permits the fasteners to be identified and ordered by a part or identifying number (PIN) as defined in this document.
The purpose of this document is to assist the designer and other personnel by providing requirements and part identifying numbers for the most commonly used fasteners for ship systems and equipment. A part or identification number (PIN) is normally required for all military applications and provides a useful means of communicating fastener requirements to suppliers and manufacturers in a very succinct manner.
The use of SAE J2295M has been limited due to the fact that most of the metric nuts and bolts available in the United States have not been made to the ASME dimensional standards referenced in SAE J2295 . Rather most of the available metric products available have been manufactured to DIN and ISO standards. ASME has recently been withdrawing their metric dimensional standards in favor of the ISO standards. Other references in SAE J2295 may also have been withdrawn or superseded. Generally the fasteners to ISO and other National metric fasteners available on the market are interchangeable with those covered by SAE J2295M. It is recommended that ISO metric fasteners be used for new design. For support of current designs J2295M requirements can be compared to fasteners manufactured to ISO and other National Metric Standards to determine the suitability of these more readily available fasteners. However, it is considered important that J2295M standard be available for reference to support those applications where it has been used. The Part Identification Numbers (PINs) in J2295M may have been used on drawings and users may need to refer to this part standard to identify the characteristics of these fasteners.