ASTM F594 Specification for Stainless Steel Nuts
ASTM F594 includes chemical and mechanical specifications of stainless steel nuts with a diameter of 1/4 -1-1/2 inclusive and in use with fasteners meeting ASTM F593. These ASTM F594 Nuts are general purpose nuts that are offered in seven alloy groups. The following is a rudimentary outline of the typical grades of the ASTM F594 specification.
ASTM F594 standard outlines the specifications of stainless steel hex nut in imperial sizes of between 1/4 inch to 1 1/2 inches. This specification is important to service applications that need general corrosion resistance and can cover a large spectrum of alloys, comprising of seven different groups of stainless steel. These are further subdivided into twelve austenitic, two ferritic, four martensitic and one precipitation hardening alloy type. These nuts are commonly referred to as F594A, F594C, F594D, F594F, F594G and F594H, which are also commonly made. Jade Alloys manufactures these hex nuts according to the ASTM standard, ensuring they are duly tested and supplied with EN 10204 Type 3.1 Certification.

ASTM F594 Alloys
| Group | Alloy | Condition |
| 1 | 304, 305, 384, 304L, 18-9LW, 302HQ | (CW) Cold Worked |
| 2 | 316, 316L | (CW) Cold Worked |
| 3 | 321, 347 | (CW) Cold Worked |
| 4 | 430E | (CW) Cold Worked |
| 5 | 410F | (H) Hardened and tempered |
| 6 | 431 | (H) Hardened and tempered |
| 7 | 630 | (AH) Age Hardened |
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ASTM F594 Stainless Steel Nuts, ASME SF594 Washers & ASTM F594 304 Hex Nut Manufacturer & Supplier in India
Jade Special Metals is another top ASTM F594 Nuts manufacturer and ASTM F594 Nuts supplier of high-quality ASTM F594 Stainless Steel Nuts in India. We are aware of the criticality of these parts to a variety of industrial uses and will offer products of high standards in terms of both quality and longevity.
We provide comprehensive data on ASTM F594 nut dimensions and offer an ASTM F594 nuts size chart to ensure you find the perfect fit. You can always rely on us to deliver high-quality and service, whether you need standard parts such as the ASTM F594 304 Hex Nut or customized parts. Moreover, we may help with the information about ASTM F594 nuts equivalent standards and competitive ASTM F594 nuts price quotes. Contact us today for reliable supply and service.
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Quick Section Links
- Types of ASTM F594 Fasteners
- ASTM F594 Nuts Specifications
- ASTM F594 Material Chemical Composition
- ASTM F594 Nuts Mechanical Properties
- ASTM F594 Nuts Equivalent Grades
- ASTM F594 Nut Dimensions
- ASTM F594 Heavy Hex Nuts Dimension
- ASTM F594 Nuts Size Chart
- F594 Acorn Nuts Heat Treatments
- ASTM F594 Nuts Inventory
- Available Stock of ASTM F594 Nuts
- Applications of ASTM F594 Nuts
- ASTM F594 Nuts Price
Types of ASTM F594 Fasteners
ASTM F594 Nuts Specifications
| Standards | Designation |
| ASTM | F594 |
| Delivery time | Regular product is about 7-15 days, custom product will according to special requirement |
| Coatings | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
| Dimensions | ASME B18.2.1, B18.3 |
| Melt Origin | East Europe/South America/Korea/Japan |
| 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 |
| Coatings | Black Oxide, Cadmium, Galvanized, Teflon, Xylan, Zinc, Others Upon Request |
| Mandatory Requirements | Free from Mercury & Radioactive Contamination |
| Additional Requirements | NACE MR0103 / MR0175 / ISO 15156 Compliance |
ASTM F594 Material Chemical Composition
| Element, max except as shown | 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% |
ASTM F594 Nuts 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 |
ASTM F594 Nuts Equivalent Grades
| ASTM F594 Alloy Group | Common Alloy / Grade | ASTM F594 Markings | UNS Designation | EN/DIN (W.Nr.) | ISO Property Class (ISO 3506-2) | JIS Standard |
|---|---|---|---|---|---|---|
| Group 1 | 304 Stainless Steel | F594A, F594B, F594C | S30400 | 1.4301 | A2-70, A2-80 | SUS 304 |
| Group 1 | 304L Stainless Steel | F594A, F594B, F594D | S30403 | 1.4307 | A2-70, A2-80 | SUS 304L |
| Group 2 | 316 Stainless Steel | F594E, F594F, F594G | S31600 | 1.4401 | A4-70, A4-80 | SUS 316 |
| Group 2 | 316L Stainless Steel | F594E, F594F, F594H | S31603 | 1.4404 / 1.4435 | A4-70, A4-80 | SUS 316L |
| Group 3 | 321 Stainless Steel | F594J, F594K, F594L | S32100 | 1.4541 | A3 or A5 | SUS 321 |
| Group 3 | 347 Stainless Steel | F594J, F594K, F594M | S34700 | 1.4550 | A3 or A5 | SUS 347 |
| Group 4 | 430 Stainless Steel | F594N, F594V | S43000 | 1.4016 | F1 | SUS 430 |
| Group 5 | 410 Stainless Steel | F594P, F594R | S41000 | 1.4006 | C1, C3 | SUS 410 |
| Group 7 | 630 (17-4PH) | F594U | S17400 | 1.4542 | – | SUS 630 |
ASTM F594 Nut Dimensions

| Nominal Size | Grade 8 Hex Nuts Thickness (H) | Thread Diameter | Width Across Corners (G) Max-Mix | Width Across Flats (F) Max-Min |
|---|---|---|---|---|
| 1/4 | 0.505 | 0.2500 | 0.505 to 0.488 | 7/16 |
| 5/16 | 0.577 | 0.3125 | 0.577 to 0.557 | 1/2 |
| 3/8 | 0.650 | 0.3750 | 0.650 to 0.628 | 9/16 |
| 1/2 | 0.866 | 0.5000 | 0.866 to 0.840 | 3/4 |
| 9/16 | 1.010 | 0.5625 | 1.010 to 0.982 | 7/8 |
| 5/8 | 1.083 | 0.6250 | 1.083 to 1.051 | 15/16 |
| 3/4 | 1.299 | 0.7500 | 1.299 to 1.240 | 1-1/8 |
| 7/8 | 1.516 | 0.8750 | 1.516 to 1.447 | 1-5/16 |
| 1 | 1.732 | 1.0000 | 1.732 to 1.653 | 1-1/2 |
| 1-1/8 | 1.949 | 1.1250 | 1.949 to 1.859 | 1-11/16 |
| 1-3/8 | 2.382 | 1.3750 | 2.382 to 2.273 | 2-1/16 |
| 1-1/2 | 2.598 | 1.5000 | 2.598 to 2.480 | 2-1/4 |
| 1-5/8 | 2.815 | 1.6250 | 2.815 to 2.686 | 2-7/16 |
| 2 | 3.464 | 2.000 | 3.464 to 3.306 | 3 |
| 2-1/4 | 3.897 | 2.2500 | 3.897 to 3.719 | 3-3/8 |
| 2-1/2 | 4.330 | 2.5000 | 4.330 to 4.133 | 3-3/4 |
| 2-3/4 | 4.763 | 2.7500 | 4.763 to 4.456 | 4-1/8 |
| 3 | 5.196 | 3.000 | 5.196 to 4.959 | 4-1/2 |
ASTM F594 Heavy Hex Nuts Dimension

|
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
|
1/2
|
.500
|
.488
|
.577
|
.556
|
15/64
|
.250
|
.218
|
|
5/16
|
.3125
|
9/16
|
.562
|
.546
|
.650
|
.622
|
19/64
|
.314
|
.280
|
|
3/8
|
.3750
|
11/16
|
.688
|
.669
|
.794
|
.763
|
23/64
|
.377
|
.341
|
|
7/16
|
.4375
|
3/4
|
.750
|
.728
|
.866
|
.830
|
27/64
|
.441
|
.403
|
|
1/2
|
.5000
|
7/8
|
.875
|
.850
|
1.010
|
.969
|
31/64
|
.504
|
.464
|
|
9/16
|
.5625
|
15/16
|
.938
|
.909
|
1.083
|
1.037
|
35/64
|
.568
|
.526
|
|
5/8
|
.6250
|
1-1/16
|
1.062
|
1.031
|
1.227
|
1.175
|
39/64
|
.631
|
.587
|
|
3/4
|
.7500
|
1-1/4
|
1.250
|
1.212
|
1.443
|
1.382
|
47/64
|
.758
|
.710
|
|
7/8
|
.8750
|
1-7/16
|
1.438
|
1.394
|
1.660
|
1.589
|
55/64
|
.885
|
.833
|
|
1
|
1.0000
|
1-5/8
|
1.325
|
1.575
|
1.876
|
1.796
|
63/64
|
1.012
|
.956
|
|
1-1/8
|
1.1250
|
1-13/16
|
1.812
|
1.756
|
2.093
|
2.002
|
1-7/64
|
1.139
|
1.079
|
|
1-1/4
|
1.2500
|
2
|
2.000
|
1.938
|
2.309
|
2.209
|
1-7/32
|
1.251
|
1.187
|
|
1-3/8
|
1.3750
|
2-3/16
|
2.188
|
2.119
|
2.526
|
2.416
|
1-11/32
|
1.378
|
1.460
|
|
1-1/2
|
1.5000
|
2-3/8
|
2.375
|
2.300
|
2.742
|
2.622
|
1-15/32
|
1.505
|
1.433
|
|
1-5/8
|
1.6250
|
2-9/16
|
2.562
|
2.481
|
2.959
|
2.828
|
1-19/32
|
1.632
|
1.556
|
|
1-3/4
|
1.7500
|
2-3/4
|
2.750
|
2.662
|
3.175
|
3.035
|
1-23/32
|
1.759
|
1.679
|
|
2
|
2.0000
|
3-1/8
|
3.125
|
3.025
|
3.608
|
3.449
|
1-31/32
|
2.013
|
1.925
|
|
2-1/4
|
2.2500
|
3-1/2
|
3.500
|
3.388
|
4.041
|
3.862
|
2-13/64
|
2.251
|
2.155
|
|
2-1/2
|
2.5000
|
3-7/8
|
3.875
|
3.750
|
4.474
|
4.275
|
2-29/64
|
2.505
|
2.401
|
|
2-3/4
|
2.7500
|
4-1/4
|
4.250
|
4.112
|
4.907
|
4.688
|
2-45/64
|
2.759
|
2.647
|
|
3
|
3.0000
|
4-5/8
|
4.625
|
4.475
|
5.340
|
5.102
|
2-61/64
|
3.013
|
2.893
|
|
3-1/4
|
3.2500
|
5
|
5.000
|
4.838
|
5.774
|
5.515
|
3-3/16
|
3.252
|
3.124
|
|
3-1/2
|
3.5000
|
5-3/8
|
5.375
|
5.200
|
6.207
|
5.928
|
3-7/16
|
3.506
|
3.370
|
|
3-3/4
|
3.7500
|
5-3/4
|
5.750
|
5.562
|
6.640
|
6.341
|
3-11/16
|
3.670
|
3.616
|
|
4
|
4.0000
|
6-1/8
|
6.125
|
5.925
|
7.073
|
6.755
|
3-15/16
|
4.014
|
3.862
|
ASTM F594 Nuts Size Chart
|
Nuts Size
(mm) |
Diameter*
(mm) |
Height
(mm) |
||
|---|---|---|---|---|
|
Hex Nuts
|
Jam Nuts
|
Nylock Nuts
|
||
|
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.
|
||||
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F594 Acorn Nuts Heat Treatments
| Types of Alloys | Heated to 1900+/- 50°F |
|---|---|
| Austenitic Alloys (303/304/L/ 305/ 316/L/ 321/ 347) | 1900+/- 50°F |
| Ferritic Alloys (430 and 430F) | 145 +/- 50°F |
| Martensitic Alloys (410, 416, and 416Se) | 1850 +/- 50°F |
| Precipitation Hardening Alloy (630) | 1038 +/- 14°C |
ASTM A594 Nuts Inventory


ASTM F594 Lock Nuts

ASTM F594 Wing Nuts
Available Stock of ASTM F594 Nuts
- ASTM F594 Panel Nut
- ASTM F594 Dome Nuts
- ASTM F594 Serrated Flange Nut
- ASTM F594 Hex Nut
- ASTM F594 Wing Nut
- ASTM F594 Self Locking Nuts
- ASTM F594 High Nuts
- ASTM F594 Spring T Nuts
- ASTM F594 Nuts
- ASTM F594 Structural Nuts
- ASTM F594 2 Way Lock Nut
- ASTM F594 Flex Lock Nut
- ASME SF594 Nylon Insert Nut
- ASTM F594 Coupler Nuts
- ASTM F594 Slotted Nut
- ASTM F594 Heavy Hex Nuts
- ASTM F594 Hexagon Nuts
- ASTM F594 Square Nuts
What is the difference between ASTM F594 and A194?
The major differences between the ASTM F594 and A194 standards are connected with their mechanical properties, dimensions and the purposes of their usage. A194 nuts are mostly intended to be used in the service of high temperature service, however they are regularly used in other applications. F594 nuts are provided to be used in general purposes applications.
Applications of ASTM F594 Nuts
- Nuclear Energy Sector
- Offshore & Chemical Industry
- Electrical & Agriculture Industry
- Construction
- Petrochemical Nuts
- Automotive industry
- Oil & Gas Industries
- Power Generation
- Off-Shore Oil Drilling
- Heat Exchangers

Related Products
ASTM F594 Nuts Price In India
| Product Description | Price (US$ per Piece) |
| ASTM F594 stainless steel 304 316 SS hex nut | 0.01 – 0.05 |
| ASTM F594 All Size Material Hexagon Thin Nuts | 0.10 – 0.30 |
| Supplier ASTM F594 A2 70 Square Nut DIN 557 | 0.10 – 0.30 |
| ASTM F594 hex nut | 1.50 – 2.00 |
| High Quality Left thread ANSI ASTM F594 SS304 18-8 A2-70 UNC Hex Nut | 0.05 – 0.10 |
| ASTM F594 Fasteners & lock nut | 1.50 – 2.00 |
| ASTM F594 hex flange weld nut | 0.10 – 1.20 |
| ASTM F594 hexagon nut | 0.15 – 0.50 |
| High Tensile Fastener ASTM F594 coupling nut | 0.01 – 0.10 |
Note: Prices are approximate. For the final ASTM F594 Hex Nuts price list, please contact us .
We maintain ready stock of Stainless Steel ASTM F594 Self Locking Nut, ASTM F594 Heavy Hex Nuts, ASTM F594 Self Locking Nut, ASTM F594 Lock Nuts, ASTM F594 Hex Nuts. Get in touch with us with your requirement for quick quote.
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