Specification ASTM F594 covers all four classes of stainless steel including austenitic, ferritic, martensitic as well as precipitation hardening. The ASTM F594 Stainless Steel Nuts may be produced by any one of the seven groups. All four classes of stainless steels have been classified into these seven groups. This specification also mentions the various condition the astm f594 nuts is to be supplied under. For instance in group 1, the ASTM F594D Stainless Steel Nuts may be produced from alloys such as 304, 305, 304L, 384, 18–9LW as well as 302HQC.
If the ASTM F594H Stainless Steel Nuts belongs to Group 2, the alloys include grade 316 and its low carbon-containing alloy 316L. Group 3 consists of heat resistant austenitic stainless steel alloys i.e. grade 321 and grade 347 ASME SF594 Dome Nuts. Group 4 consists of 430E which makes the ASTM F594G Stainless Steel Nuts. All four groups i.e. 1, 2, 3 & 4 are delivered in a cold worked condition. The alloy for group 5 & 6 ASTM F594 Hex Head Nuts includes alloys 410F & 431 respectively.
Fasteners like the ASME SF594 Barrel Nut from both group 5 & group 6 have been delivered in a hardened and tempered condition. Lastly, group 6, which consists of alloy 630 ASTM F594 Heavy Hex Nut, is delivered in an aged hardened condition. In addition to conforming to the mechanical properties, the F594 Stainless Steel Washers need to be subjected to tests that determine their chemistry, corrosion resistance as well as mechanical properties.
Dimensions |
ASME B18.2.1, B18.3 |
|---|---|
Melt Origin |
South America/East Europe/JapanKorea/ |
Product Origin |
Made in India |
Threads Configuration |
ASME B1.1 2A/3A Inch Unified Threads and B1.13M 6h Metric Coarse Threads |
Certification |
Dual Certified As per ASTM & ASME Codes |
Additional Certifications |
PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
Mandatory Requirements |
Free from Mercury & Radioactive Contamination |
Additional Requirements |
NACE MR0103 / MR0175 / ISO 15156 Compliance |
Stainless Steel :
AISI 302, 304, 304L,316, 316L, 310, 317, 317L, 321, 347, 410, 420,904L etc.
Duplex & Super Duplex Steel :
ASTM / ASME A815 UNS No. S31803, UNS No. S 32205, UNS No. S 31254, UNS No. S 31550, UNS No. S 32750, and UNS No. S 32760
Carbon Steel :
ASTM A307
Alloy Steel :
ASTM / ASME A/SA 193 / 194 B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
Nickel Alloy :
ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3)
Nut Size (mm) |
Diameter* (mm) |
Height (mm) |
||
|---|---|---|---|---|
Hex Nut |
Jam Nut |
Nylock Nut |
||
2 |
4 |
1.6 |
1.2 |
- |
2.5 |
5 |
2 |
1.6 |
- |
3 |
5.5 |
2.4 |
1.8 |
4 |
4 |
7 |
3.2 |
2.2 |
5 |
5 |
8 |
4 |
2.7 |
5 |
6 |
10 |
5 |
3.2 |
6 |
7 |
11 |
5.5 |
3.5 |
- |
8 |
13 |
6.5 |
4 |
8 |
10 |
17 |
8 |
5 |
10 |
12 |
19 |
10 |
6 |
12 |
14 |
22 |
11 |
7 |
14 |
16 |
24 |
13 |
8 |
16 |
18 |
27 |
15 |
9 |
18.5 |
20 |
30 |
16 |
10 |
20 |
* This is the diameter across the flats. It is also the size of wrench to use. |
||||
Nut Size (mm) |
Diameter* (mm) |
Height (mm) |
||
|---|---|---|---|---|
Hex Nut |
Jam Nut |
Nylock Nut |
||
2 |
4 |
1.6 |
1.2 |
- |
2.5 |
5 |
2 |
1.6 |
- |
3 |
5.5 |
2.4 |
1.8 |
4 |
4 |
7 |
3.2 |
2.2 |
5 |
5 |
8 |
4 |
2.7 |
5 |
6 |
10 |
5 |
3.2 |
6 |
7 |
11 |
5.5 |
3.5 |
- |
8 |
13 |
6.5 |
4 |
8 |
10 |
17 |
8 |
5 |
10 |
12 |
19 |
10 |
6 |
12 |
14 |
22 |
11 |
7 |
14 |
16 |
24 |
13 |
8 |
16 |
18 |
27 |
15 |
9 |
18.5 |
20 |
30 |
16 |
10 |
20 |
* This is the diameter across the flats. It is also the size of wrench to use. |
||||
Nominal Size or Basic Major Thread Diameter |
F |
G |
H |
||||||
Width Across Flats |
Width Across Corners |
Thickness |
|||||||
Basic |
Max |
Min |
Max |
Min |
Basic |
Max |
Min |
||
1/4 |
.2500 |
7/16 |
.438 |
.428 |
.505 |
.488 |
7/32 |
.226 |
.212 |
5/16 |
.3125 |
1/2 |
.500 |
.489 |
.577 |
.557 |
17/64 |
.273 |
.258 |
3/8 |
.3750 |
9/16 |
.562 |
.551 |
.650 |
.628 |
21/64 |
.337 |
.479 |
7/16 |
.4375 |
11/16 |
.688 |
.675 |
.794 |
.768 |
3/8 |
.385 |
.365 |
1/2 |
.5000 |
3/4 |
.750 |
.736 |
.866 |
.840 |
7/16 |
.448 |
.427 |
9/16 |
.5625 |
7/8 |
.875 |
.861 |
1.010 |
.982 |
31/64 |
.496 |
.473 |
5/8 |
.6250 |
15/16 |
.938 |
.922 |
1.083 |
1.051 |
35/64 |
.559 |
.535 |
3/4 |
.7500 |
1-1/8 |
1.125 |
1.088 |
1.299 |
1.240 |
41/64 |
.665 |
.617 |
7/8 |
.8750 |
1-5/16 |
1.312 |
1.269 |
1.516 |
1.447 |
3/4 |
.776 |
.724 |
1 |
1.0000 |
1-1/2 |
1.500 |
1.450 |
1.732 |
1.653 |
55/64 |
.887 |
.831 |
1-1/8 |
1.1250 |
1-11/16 |
1.688 |
1.631 |
1.949 |
1.859 |
31/32 |
.999 |
.939 |
1-3/8 |
1.3750 |
2-1/16 |
2.062 |
1.994 |
2.382 |
2.273 |
1-11/64 |
1.206 |
1.138 |
1-1/2 |
1.500 |
2-1/4 |
2.250 |
2.175 |
2.598 |
2.480 |
1-9/32 |
1.ASTM A194 GR. 8 |
1.245 |
1-5/8 |
1.6250 |
2-7/16 |
2.438 |
2.356 |
2.815 |
2.686 |
1-25/64 |
1.429 |
1.353 |
1-3/4 |
1.7500 |
2-5/8 |
2.625 |
2.538 |
3.031 |
2.893 |
1-1/2 |
1.540 |
1.460 |
2 |
2.0000 |
3 |
3.000 |
2.900 |
3.464 |
3.306 |
1-23/32 |
1.763 |
1.675 |
2-1/4 |
2.2500 |
3-3/8 |
3.375 |
3.263 |
3.897 |
3.719 |
1-15/16 |
1.986 |
1.890 |
2-1/2 |
2.5000 |
3-3/4 |
3.750 |
3.625 |
4.330 |
4.133 |
2-5/32 |
2.209 |
2.105 |
2-3/4 |
2.7500 |
4-1/8 |
4.125 |
3.988 |
4.763 |
4.546 |
2-3/8 |
2.431 |
2.319 |
|
Composition, %, maximum except as shown
|
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
UNS Designation
|
Alloy Group
|
Alloy
|
Carbon
|
Manganese
|
Phosphorus
|
Sulfur
|
Silicon
|
Chromium
|
Nickel
|
Copper
|
Molybdenum
|
Others
|
|
Austenitic Alloys
|
||||||||||||
|
S30200
|
1
|
303
|
0.15
|
2.00
|
0.200
|
0.150 min
|
1
|
17.0 – 19.0
|
8.0 – 10.0
|
—
|
0.60 maxA
|
—
|
|
S30323
|
1
|
303 Se
|
0.15
|
2.00
|
0.200
|
0.060
|
1
|
17.0 – 19.0
|
8.0 – 10.0
|
—
|
—
|
Se 0.15 min
|
|
A30400
|
1
|
304
|
0.08
|
2.00
|
0.045
|
0.030
|
1
|
18.0 – 20.0
|
8.0 – 10.5
|
1.00
|
—
|
—
|
|
S30403
|
1
|
304 L
|
0.03
|
2.00
|
0.045
|
0.030
|
1
|
18.0 – 20.0
|
8.0 – 12.0
|
1.00
|
—
|
—
|
|
S30500
|
1
|
305
|
0.12
|
2.00
|
0.045
|
0.030
|
1
|
17.0 – 19.0
|
10.5 – 13.0
|
1.00
|
—
|
—
|
|
S38400
|
1
|
384
|
0.08
|
2.00
|
0.045
|
0.030
|
1
|
15.0 – 17.0
|
17.0 – 19.0
|
—
|
0.50 maxA
|
—
|
|
S20300
|
1
|
XM1
|
0.08
|
5.00 – 6.50
|
0.040
|
0.18 – 0.35
|
1
|
16.0 – 18.0
|
5.0 – 6.5
|
1.75 – 2.25
|
—
|
—
|
|
S30430
|
1
|
18-9LW
|
0.10
|
2.00
|
0.045
|
0.030
|
1
|
17.0 – 19.0
|
8.0 – 10.0
|
3.0 – 4.0
|
—
|
—
|
|
S30433
|
1
|
302HQ
|
0.03
|
2.00
|
0.045
|
0.030
|
1
|
17.0 – 19.0
|
8.0 – 10.0
|
3.0 – 4.0
|
—
|
—
|
|
S31600
|
2
|
316
|
0.08
|
2.00
|
0.045
|
0.030
|
1
|
16.0 – 18.0
|
10.0 – 14.0
|
—
|
2.0 – 3.0
|
—
|
|
S31603
|
2
|
316 L
|
0.03
|
2.00
|
0.045
|
0.030
|
1
|
16.0 – 18.0
|
10.0 – 14.0
|
—
|
2.0 – 3.0
|
—
|
|
S32100
|
3
|
321
|
0.08
|
2.00
|
0.045
|
0.030
|
1
|
17.0 – 19.0
|
9.0 – 12.0
|
—
|
—
|
Ti 5 x C min
|
|
S34700
|
3
|
347
|
0.08
|
2.00
|
0.045
|
0.030
|
1
|
17.0 – 19.0
|
9.0 – 13.0
|
—
|
—
|
Cb+Ta 10 x C min
|
|
Ferritic Alloys
|
||||||||||||
|
S43000
|
4
|
430
|
0.12
|
1.00
|
0.040
|
0.030
|
1
|
16.0 – 18.0
|
—
|
—
|
—
|
—
|
|
S43020
|
4
|
430F
|
0.12
|
1.25
|
0.060
|
0.150 min
|
1
|
16.0 – 18.0
|
—
|
—
|
0.60 maxA
|
—
|
|
Martensitic Alloys
|
||||||||||||
|
S41000
|
5
|
410
|
0.15
|
1.00
|
0.040
|
0.030
|
1
|
11.5 – 13.5
|
—
|
—
|
—
|
—
|
|
S41600
|
5
|
416
|
0.15
|
1.25
|
0.060
|
0.150 min
|
1
|
12.0 – 14.0
|
—
|
—
|
0.60 maxA
|
—
|
|
S41623
|
5
|
416 Se
|
0.15
|
1.25
|
0.060
|
0.060
|
1
|
12.0 – 14.0
|
—
|
—
|
Se 0.15 min
|
—
|
|
S43100
|
6
|
431
|
0.20
|
1.00
|
0.040
|
0.030
|
1
|
15.0 – 17.0
|
1.25 – 2.50
|
—
|
—
|
—
|
|
Precipitation Hardening Alloy
|
||||||||||||
|
S17400
|
7
|
630
|
0.07
|
1.00
|
0.040
|
0.030
|
1
|
15.0 – 17.5
|
3.0-5.0
|
—
|
—
|
Cb+Ta 0.15 – 0.45
|
|
Stainless Steel Alloys
|
ConditionB
|
Alloy Mechanical Property Marking
|
Nominal Diameter, inch
|
Proof Load, ksi, min
|
Rockwell Hardness
|
||||
|---|---|---|---|---|---|---|---|---|---|
|
Austenitic Alloys
|
|||||||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
AF
|
F593A
|
1/4 to 1-1/2, incl.
|
70
|
B85 max, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
A
|
F593B
|
1/4 to 1-1/2, incl.
|
75
|
B65 to 95, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
CW1
|
F593C
|
1/4 to 5/8, incl.
|
100
|
B95 to C322, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
CW2
|
F593D
|
3/4 to 1-1/2, incl.
|
85
|
B80 to C32, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
SH1
|
F593A
|
1/4 to 5/8, incl.
|
120
|
C24 to C36, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
SH2
|
F593B
|
3/4 to 1, incl.
|
110
|
C20 to C32, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
SH3
|
F593C
|
1-1/8 to 1-1/4, incl.
|
100
|
B95 to C30, incl.
|
||||
|
1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se)
|
SH4
|
F593D
|
1-3/8 to 1-1/2, incl.
|
85
|
B90 to C28, incl.
|
||||
|
2 (316, 316L)
|
AF
|
F593E
|
1/4 to 1-1/2″, incl.
|
70
|
B85 max, incl.
|
||||
|
2 (316, 316L)
|
A
|
F593F
|
1/4 to 1-1/2″, incl.
|
75
|
B65 to 95, incl.
|
||||
|
2 (316, 316L)
|
CW1
|
F593G
|
1/4 to 5/8, incl.
|
100
|
B95 to C322, incl.
|
||||
|
2 (316, 316L)
|
CW2
|
F593H
|
3/4 to 1-1/2, incl.
|
85
|
B80 to C32, incl.
|
||||
|
2 (316, 316L)
|
SH1
|
F593E
|
1/4 to 5/8, incl.
|
120
|
C24 to C36, incl.
|
||||
|
2 (316, 316L)
|
SH2
|
F593F
|
3/4 to 1, incl.
|
110
|
C20 to C32, incl.
|
||||
|
2 (316, 316L)
|
SH3
|
F593G
|
1-1/8 to 1-1/4, incl.
|
100
|
B95 to C30, incl.
|
||||
|
2 (316, 316L)
|
SH4
|
F593H
|
1-3/8 to 1-1/2, incl.
|
85
|
B90 to C28, incl.
|
||||
|
3 (321, 347)
|
AF
|
F593J
|
1/4 to 1-1/2, incl.
|
70
|
B85 max
|
||||
|
3 (321, 347)
|
A
|
F593K
|
1/4 to 1-1/2, incl.
|
75
|
B65 to 95, incl.
|
||||
|
3 (321, 347)
|
CW1
|
F593L
|
1/4 to 5/8, incl.
|
100
|
B95 to C322, incl.
|
||||
|
3 (321, 347)
|
CW2
|
F593M
|
3/4 to 1-1/2, incl.
|
85
|
B80 to C32, incl.
|
||||
|
3 (321, 347)
|
SH1
|
F593J
|
1/4 to 5/8, incl.
|
120
|
C24 to C36, incl.
|
||||
|
3 (321, 347)
|
SH2
|
F593K
|
3/4 to 1, incl.
|
110
|
C20 to C32, incl.
|
||||
|
3 (321, 347)
|
SH3
|
F593L
|
1-1/8 to 1-1/4, incl.
|
100
|
B95 to C30, incl.
|
||||
|
3 (321, 347)
|
SH4
|
F593M
|
1-3/8 to 1-1/2, incl.
|
85
|
B90 to C28, incl.
|
||||
|
Ferritic Alloys
|
|||||||||
|
4 (430, 430F)
|
A
|
F593N
|
1/4 to 1-1/2, incl.
|
55
|
B85 max
|
||||
|
4 (430, 430F)
|
CW1
|
F593V
|
1/4 to 5/8, incl.
|
60
|
B75 to 98, incl.
|
||||
|
4 (430, 430F)
|
CW2
|
F593W
|
3/4 to 1-1/2, incl.
|
55
|
B65 to 95, incl.
|
||||
|
Martensitic Alloys
|
|||||||||
|
5 (410, 416, 416Se)
|
H
|
F593P
|
1/4 to 1-1/2, incl.
|
100
|
C20 to 30, incl.
|
||||
|
5 (410, 416, 416Se)
|
HT
|
F593R
|
1/4 to 1-1/2, incl.
|
160
|
C34 to 45, incl.
|
||||
|
6 (431)
|
H
|
F593S
|
1/4 to 1-1/2, incl.
|
125
|
C25 to 32, incl.
|
||||
|
6 (431)
|
HT
|
F593T
|
1/4 to 1-1/2, incl.
|
180
|
C40 to 48, incl.
|
||||
|
Precipitation Hardening Alloy
|
|||||||||
|
7 (630)
|
AH
|
F593U
|
1/4 to 1-1/2, incl.
|
135
|
C28 to 38, incl.
|
||||
| ASTM F594 Heavy Hex Nut | ASME SF594 Panel Nut |
| SF594 Nuts | ASTM F594 Alloy Steel Nuts |
| F594 Hex Nut | ASTM F594 Bolt |
| F594 Nuts | ASTM F594 Forged Eye Nut |
| ASTM F594 Cap nuts | ASTM F594 Hex lock nuts nylon insert |
| ASTM F594 Metric Nuts | ASTM F594 Top lock nuts |
