ASTM A594 TECHNICAL DATA

^AMinimum values except where shown as maximum or as a range.

^BLegend of Conditions

A-Machined from annealed or solution annealed stock thus retaining the properties of the original stock; or hot formed and solution annealed.

AF-Annealed after all threading is completed.

AH-Solution annealed and age hardened after forming.

CW-Annealed and cold worked. Sizes 0.75 in. and larger may be hot worked and solution annealed.

H-Hardened and tempered at 1050°F (566°C) min.

HT-Hardened and tempered at 525°F (274°C) min.

SH-Machined from strain hardened stock.

C-Proof stress values for heavy hex nuts are based on 1.08 times the value for corresponding hex nuts.

^ATo determine nut proof load in pounds, multiply the appropriate nut proof load stress by the tensile stress area of the thread. Stress areas for UNC, UNF, and 8 UN thread series are given in Table 4.

^BNon-zinc-coated nuts are nuts intended for use with externally threaded fasteners which have a plain (nonplated or noncoated) finish or have a plating or coating of insufficient thickness to necessitate overtapping the nut thread to provide assimilability. Zinc-coated nuts are nuts intended for use with externally threaded fasteners which are hot-dip zinc-coated, mechanically zinc-coated, or have a plating or coating of sufficient thickness to necessitate overtapping the nut thread to provide assimilability.

^CNuts made in accordance to the requirements of Specification A194/A194M, Grade 2 or Grade 2H, and marked with their grade symbol are acceptable equivalents for Grades C heavy hex and hex and D nuts. When A194 zinc-coated inch series nuts are supplied, the zinc coating, overtapping, lubrication and rotational capacity testing shall be in accordance with Specification A563.

^DNuts made in accordance with the requirements of Specification A194/A194M, Grade 2H, and marked with its grade symbol are an acceptable equivalent for Grade DH nuts. When A194 zinc-coated inch series nuts are supplied, the zinc coating, overtapping, lubrication and rotational capacity testing shall be in accordance with Specification A563.

^EASTM A194 Grades 2 or 2H shall not be supplied for Grade C hex nuts unless approved by purchaser.

^A Unless 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.

^B See 4.2 for options.

^C When approved by the purchaser, alloys 303, 303Se, or XM1 may be furnished.

^D Sizes 0.75 in. and larger may be hot worked and solution annealed.

^E When approved by the purchaser, alloy 430F may be furnished.

^F When approved by the purchaser, alloy 416 or 416Se may be furnished.