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1.1 This specification covers the requirements for stainless steel bolts, hex cap screws, and studs 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.
1.2 Seven groups of stainless steel alloys are covered, including twelve austenitic, two ferritic, four martensitic, and one precipitation hardening.
|1||304, 305, 384, 304 L,||(CW) cold worked|
|2||316, 316 L||(CW) cold worked|
|3||321, 347||(CW) cold worked|
|4||430||(CW) cold worked|
|5||410||(H) hardened and tempered|
|6||431||(H) hardened and tempered|
|7||630||(AH) age hardened|
AUnless otherwise specified on the inquiry and order, the choice of an alloy from within a group shall be at the discretion of the fastener manufacturer (see 6.1).
B See 4.2 for options.
CSizes 0.75 in. and larger may be hot worked and solution annealed.
DWhen approved by the purchaser, Alloys 303, 303Se, or XM1 may be furnished.
EWhen approved by the purchaser, Alloy 430F may be furnished.
FWhen approved by the purchaser, Alloys 416 or 416Se may be furnished.
1.3 Supplementary requirements of an optional nature are provided, applicable only when agreed upon between the manufacturer and the purchaser at the time of the inquiry and order.
1.4 Suitable nuts for use with bolts, hex cap screws, and studs included in this specification are covered by Specification F 594. Unless otherwise specified, all nuts used on these fasteners shall conform to the requirements of Specification F 594, shall be of the same alloy group, and shall have a specified minimum proof stress equal to or greater than the specified minimum full-size tensile strength of the externally threaded fastener.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASME StandardsB1.1 Unified Inch Screw Threads B18.2.1 Square and Hex Bolts and Screws, Including Hex Cap Screws
A262 Practices for Detecting Susceptibility to Intergranular Attack in Austenitic Stainless Steels
A276 Specification for Stainless Steel Bars and Shapes
A342/A342M Test Methods for Permeability of Feebly Magnetic Materials
A380 Practice for Cleaning, Descaling, and Passivation of Stainless Steel Parts, Equipment, and Systems
A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings
A493 Specification for Stainless Steel Wire and Wire Rods for Cold Heading and Cold Forging
A555/A555M Specification for General Requirements for Stainless Steel Wire and Wire Rods
A564/A564M Specification for Hot-Rolled and Cold-Finished Age-Hardening Stainless Steel Bars and Shapes
A582/A582M Specification for Free-Machining Stainless Steel Bars
A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
A967 Specification for Chemical Passivation Treatments for Stainless Steel Parts
D3951 Practice for Commercial Packaging
E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
ICS Number Code 21.060.10 (Bolts, screws, studs)