ASTM F594 Nuts

Atlanta Rod manufactures ASTM F594 nuts in all diameters in house and can meet your specific delivery schedule domestically or internationally on the specialty nuts.

Specifications

This specification 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. Seven groups of stainless steel alloys are covered, including ten austenitic, two ferritic, four martensitic, and one precipitation hardening. Suitable bolts, hex cap screws, and studs for use with nuts included in this specification are covered by Specification F593.

Alloy Group 1:
- 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se (Austenitic)
Alloy Group 2:
- 316, 316L (Austenitic)
Alloy Group 3:
- 321, 347 (Austenitic)
Alloy Group 4:
- 430, 430F (Ferritic)
Alloy Group 5:
- 410, 416, 416Se (Martensitic)
Alloy Group 6:
- 431 (Martensitic)
Alloy Group 7:
- 630 (17-4) (Precipitation Hardening)

Chemical Requirements

Element	Alloy Group 1, Type 304	Alloy Group 2, Type 316
Carbon	0.08%	0.08%
Manganese	2.00%	2.00%
Phosphorus	0.045%	0.045%
Sulfur	0.030%	0.030%
Silicon	1.00%	1.00%
Chromium	18.0 to 20.0%	16.0 to 18.0%
Nickel	8.0 to 10.5%	10.0 to 14.0%
Copper	1.00%
Molybdenum		2.00 to 3.00%

Mechanical Requirements

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

See Also: ASTM F594 Specifications at ASTM.org.