Fastener Specifications
Faster specifications set requirements for factors related to the production of fasteners including, materials, chemical properties, mechanical properties, dimensions, and tolerances. ASTM and SAE fastener standards typically outline requirements for the materials and properties of a fastener while ASME and ANSI standards normally dictate any dimensional or tolerance related requirements. Typically, specifications set requirements for a particular type of fastener or group of fasteners used for a specific specification. Find more information and products related to ASTM and SAE specifications in the tables below.
ASTM Standards & Specs
SAE Standards & Specs
ASTM Fastener Specifications
The American Society for Testing and Materials (ASTM) has developed a wide range of standard specifications that apply to various types of fasteners, including bolts, screws, nuts, washers, and studs. These ASTM specifications outline critical requirements regarding the materials used, mechanical and chemical properties, dimensional standards, surface finishes, product markings, and testing procedures. By adhering to these detailed standards, manufacturers ensure that fasteners meet the necessary performance and safety criteria for their intended applications across various industries.
Bolt Specifications
Specifications for inch series bolting for screws, bars, bolts, wire, studs, and stud bolts used for pressure valves, flanges, vessels, and fittings for high-temperature applications. | |
Specifications that covers the chemical and mechanical requirements of two grades of carbon steel bolts and studs in sizes 1⁄4 in. through 4 in. | |
| ASTM A320 | Specifications that cover high-strength low-alloy steel shapes for bolting material used for pressure valves, flanges, vessels, and fittings for high-temperature applications. |
Specifications that covers the chemical and mechanical requirements of quenched and tempered alloy steel bolts, studs, and other externally threaded fasteners for application at normal atmospheric temperatures, where high strength is required and for limited application at elevated temperature. | |
Specifications that cover stainless steel bolts, hex cap screws, and studs in a number of alloys in common use and intended for service applications requiring general corrosion resistance.. | |
Specifications that covers quenched and tempered alloy steel hexagon socket button (SBHCS) and flat countersunk (SFHCS) head cap screws. | |
Specifications that covers straight, bent, headed, and headless anchor bolts (also known as anchor rods) made of carbon, medium carbon boron, alloy, or high-strength low alloy steel. | |
Specifications that covers chemical, physical and mechanical requirements for quenched and tempered bolts manufactured from steel and alloy steel, in inch and metric dimensions, in two strength grades, two types and two styles. |
Nut Specifications
Specifications that cover a variety of carbon, alloy, and stainless steel nuts intended for use in high-pressure and high-temperature service. | |
Specifications that covers chemical and mechanical requirements for eight grades of carbon and alloy steel nuts for general structural and mechanical uses on bolts, studs, and other externally threaded parts. | |
Specifications that covers the requirements for stainless steel nuts 0.25 to 1.50 in., inclusive, in nominal diameter in a number of alloys in common use and intended for service applications requiring general corrosion resistance. |
Washer Specifications
Specifications that cover hardened steel washers for use with fasteners that are intended for general-purpose mechanical and structural use with bolts, nuts, studs, and other internally and externally threaded fasteners. | |
Specifications that covers round and miscellaneous shape steel plain (flat) washers furnished in an unhardened condition. | |
Specifications that covers compressible-washer-type direct tension indicators, (DTIs) capable of indicating the achievement of a specified minimum bolt tension in a structural bolt. |
Forged Specifications
Specifications that covers weldless forged, quenched, and tempered carbon steel threaded lifting eyes (formerly eyebolts) for overhead lifting. | |
Specifications that covers forged carbon steel piping components for ambient- and high-temperature service in pressure systems. |
Socket Specifications
| ASTM A574 | Specifications that covers the requirements for quenched and tempered alloy steel hexagon socket-head cap screws. |
SAE Fastener Specifications
The Society of Automotive Engineers have developed various standard specifications for different types of fasteners including, bolts, nuts, rivets, screws, and washers. The specifications that are set for these fasteners dictate requirements relevant to the dimensions, the material and mechanical properties, the product identification markings, and product testing requirements. The requirements outlined in individual SAE specifications ensure that fasteners are manufactured and perform at the levels needed for safe and effective use within their particular application.
Bolt Specifications
| SAE J429 | Specification for inch series bolts, screws, studs, u bolts and other externally threaded fasteners. |
Nut Specifications
| SAE J995 | Specification for inch series steel nuts from 1/4 to 2-1/2 inch for use in automotives. |