ASTM F594 Type 304 Nuts

ASTM F594 Type 304 Nuts, ASTM F594 Type 304 Hex Nuts, ASTM F594 Type 304 Heavy Hex Nuts, ASTM F594 Type 304 Hex Head Nuts Supplier in Mumbai, India.

ASTM F594 specifies the chemical and mechanical properties of stainless steel nuts with diameters ranging from 1/4 to 1-1/2 inches, inclusive, for use with ASTM F593 fasteners. These nuts are available in seven alloy groups and are intended for general use. The common grades in the ASTM F594 specification are summarised here. There are a few other ASTM F594 grades that aren't listed here because they're less frequent. The mechanical table is limited to Alloy groups 1 and 2, as these are the most frequent, while the chemical table is limited to the most common alloy grades used for each alloy group.

Chemical Composition

Element Alloy Group 1, Type 304
Carbon 0.08%
Manganese 2.00%
Phosphorus 0.045%
Sulfur 0.030%
Silicon 1.00%
Chromium 18.0 to 20.0%
Nickel 8.0 to 10.5%
Copper 1.00%
Molybdenum

Mechanical Properties

Alloy Group Condition Marking Diameter Range Proof Stress, Hex Nuts, ksi Proof Stress, Heavy Hex Nuts, ksi Rockwell Hardness
1 AF F594A 1/4 to 1-1/2 70 76 B85 max
A F594B 1/4 to 1-1/2 75 81 B65 to 95
CW1 F594C 1/4 to 5/8 100 108 B95 to C32
CW2 F594D 3/4 to 1-1/2 85 92 B80 to C32
2 AF F594E 1/4 to 1-1/2 70 76 B85 max
A F594F 1/4 to 1-1/2 75 81 B65 to 95
CW1 F594G 1/4 to 5/8 100 108 B95 to C32
CW2 F594H 3/4 to 1-1/2 85 92 B80 to C32