Technical requirements for stainless steel nuts according to ASTM F594 / ASME SF 594 standard
The ASTM F594 (ASME SF 594) standard defines strict technological regulations for the production of stainless steel nuts with a nominal thread diameter from 0.25 to 1.50 inches. This range of hardware from EV Group China is intended for general industrial applications in environments requiring high corrosion resistance and stability of physical and mechanical properties.
The specification classifies alloys into seven key groups, including ten grades of austenitic steels, two types of ferritic, four martensitic, and one precipitation-hardening alloy.
Important note: if the order specification does not contain specific instructions for the choice of steel grade, EV Group China reserves the right to choose the alloy within the group (according to section 6.1). Additional alloy selection options are regulated by section 4.2.
Production and application features
- Upon individual customer request, it is possible to manufacture products from 303, 303Se, or XM1 grade alloys.
- For hardware with a cross-section diameter of 0.75 inches and above, the use of hot forming methods followed by mandatory solution annealing is permitted.
- Production from 430F, 416, or 416Se grades is carried out strictly based on prior agreement with the customer’s technical department.
- Upon client request, additional tests and specifications not included in the basic standard package can be implemented.
To ensure the design reliability of assemblies, EV Group China recommends using bolts and studs corresponding to the ASTM F593 specification in combination with ASTM F594 nuts. According to industry regulations, fasteners in a connection must belong to the same alloy group to prevent galvanic corrosion.
All technical documentation uses inch-pound units as the primary ones. Metric values in parentheses are presented solely for reference purposes for the convenience of designers. Responsibility for compliance with safety regulations and operating conditions rests with the end user.