ASTM F593 standard is the Standard Specification of Stainless Steel Bolts, Hex Cap Screws and Stud Bolts. This specification outlines the requirements of these stainless steel fasteners on imperial sizes between 0.25 inch and 1.5 inches. It includes a large range of alloys that are typically employed in service applications and general corrosion resistance is needed. ASTM F593 categorizes stainless steels into seven types that contain twelve austenitic, two ferritic, four martensitic and one precipitation hardening alloy type. Jade Alloys produces these alloys under the F593 standard as Hex, Stud, Threaded Rods, Socket Head Cap Screws and they are tested and supplied with the EN 10204 Type 3.1 Certification.
ASTM F593 Alloys Categories
| Group | AlloyA | ConditionB |
|---|---|---|
| 1 | 304, 305, 384, 304L, 18-9LW, 302HQD | (CW) Cold WorkedC |
| 2 | 316, 316L | (CW) Cold WorkedC |
| 3 | 321, 347 | (CW) Cold WorkedC |
| 4 | 430E | (CW) Cold WorkedC |
| 5 | 410F | (H) Hardened and tempered |
| 6 | 431 | (H) Hardened and tempered |
| 7 | 630 | (AH) Age Hardened |
Types of ASTM F593 Fasteners
Astm F593 Stud
F593 Hex Bolts
F593 Stainless Steel Threaded Rod
Astm F593 Threaded Rod
Astm F593 Nuts
Astm F593 Heavy Hex Bolts
ASME SF593 U Bolts
Astm F593 18-8 Flange Bolts
F593 18-8 Nylon Insert Nuts
ASTM F593 Lag Bolts
ASTM F593 Eye Bolts
SF593-17 Wing Nuts
ASTM F593 Fasteners Specification
| Standards | Designation |
|---|---|
| ASTM | F593 |
| Thread Requirements of Astm F593 Bolts | UNC & UNF, ASME B1.1, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge) |
| Astm F593 Bolts Manufacturing Process | Cold Heading, Wire Drawing, Heat Treatment, Insert tapping, Inspection, Surface Plating, Packing |
| Astm F593 Bolts Delivery time | custom product will according to special requirement, Regular product is about 7-15 days |
| ASTM F593M Bolts Coatings | Cadmium, Black Oxide, Teflon, Galvanized, Zinc, Xylan, Others Upon Request |
| Astm F593 Bolts Head | Square, Hex, Hex flange, Round, T-head, Flat & Triangular etc |
| ASTM F593M Bolts Neck type | Square, Hex, Oval, Triangular & Knurled etc |
| Astm F593 Bolts Dimensions | ASME B18.3, B18.2.1 |
| Melt Origin | South America/East Europe/Japan/Korea |
| Product Origin | Made in India |
| Astm F593 Bolts Threads Configuration | B1.13M 6h Metric Coarse Threads and ASME B1.1 2A/3A Inch Unified Threads |
| Astm F593 Bolts Certification | Dual Certified As per ASME & ASTM Codes |
| Additional Certifications | Merkblatt AD 2000 W2 Certified, PED 97/23/EC Certified |
| Mandatory Requirements | Free from Radioactive & Mercury Contamination |
| Additional Requirements | NACE MR0175 / MR0103 /ISO 15156 Compliance |
ASTM F593 Bolts Chemical Composition
| 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 |
Mechanical Properties of ASTM F593 Stainless Bolts
| Stainless Steel Alloys | ConditionB | Alloy Mechanical Property Marking | Nominal Diameter, inch | Full Size Tests | Machined Specimen Tests | ||||
|---|---|---|---|---|---|---|---|---|---|
| Tensile Strength, ksiC | Yield Strength, ksiDC | Rockwell Hardness | Tensile Strength, ksiC | Yield Strength, ksiDC | Elongation in 4D, % | ||||
| Austenitic Alloys | |||||||||
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | AF | F593A | 1/4 to 1-1/2, incl. | 65 – 85 | 20 | B85 max | 60 | 20 | 40 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | A | F593B | 1/4 to 1-1/2, incl. | 75 – 100 | 30 | B65 to 95 | 70 | 30 | 30 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | CW1 | F593C | 1/4 to 5/8, incl. | 100 – 150 | 65 | B95 to C322 | 95 | 60 | 20 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | CW1 | F593C | 1/4 to 5/8, incl. | 100 – 150 | 65 | B95 to C322 | 95 | 60 | 20 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | CW2 | F593D | 3/4 to 1-1/2, incl. | 85 – 140 | 45 | B80 to C32 | 80 | 40 | 25 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | SH1 | F593A | 1/4 to 5/8, incl. | 120 – 160 | 95 | C24 to C36 | 115 | 90 | 12 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | SH2 | F593B | 3/4 to 1, incl. | 110 – 150 | 75 | C20 to C32 | 105 | 70 | 15 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | SH3 | F593C | 1-1/8 to 1-1/4, incl. | 100 – 140 | 60 | B95 to C30 | 95 | 55 | 20 |
| 1 (303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se) | SH4 | F593D | 1-3/8 to 1-1/2, incl. | 95 – 130 | 45 | B90 to C28 | 90 | 40 | 28 |
| 2 (316, 316L) | AF | F593E | 1/4 to 1-1/2″, incl. | 65 – 85 | 20 | B85 max | 60 | 20 | 40 |
| 2 (316, 316L) | A | F593F | 1/4 to 1-1/2″, incl. | 75 – 100 | 30 | B65 to 95 | 70 | 30 | 30 |
| 2 (316, 316L) | CW1 | F593G | 1/4 to 5/8, incl. | 100 – 150 | 65 | B95 to C322 | 95 | 60 | 20 |
| 2 (316, 316L) | CW2 | F593H | 3/4 to 1-1/2, incl. | 85 – 140 | 45 | B80 to C32 | 80 | 40 | 25 |
| 2 (316, 316L) | SH1 | F593E | 1/4 to 5/8, incl. | 120 – 160 | 95 | C24 to C36 | 115 | 90 | 12 |
| 2 (316, 316L) | SH2 | F593F | 3/4 to 1, incl. | 110 – 150 | 75 | C20 to C32 | 105 | 70 | 15 |
| 2 (316, 316L) | SH3 | F593G | 1-1/8 to 1-1/4, incl. | 100 – 140 | 60 | B95 to C30 | 95 | 55 | 20 |
| 2 (316, 316L) | SH4 | F593H | 1-3/8 to 1-1/2, incl. | 95 – 130 | 45 | B90 to C28 | 90 | 40 | 28 |
| 3 (321, 347) | AF | F593J | 1/4 to 1-1/2, incl. | 65 – 85 | 20 | B85 max | 60 | 20 | 40 |
| 3 (321, 347) | A | F593K | 1/4 to 1-1/2, incl. | 75 – 100 | 30 | B65 to 95 | 70 | 30 | 30 |
| 3 (321, 347) | CW1 | F593L | 1/4 to 5/8, incl. | 100 – 150 | 65 | B95 to C322 | 95 | 60 | 20 |
| 3 (321, 347) | CW2 | F593M | 3/4 to 1-1/2, incl. | 85 – 140 | 45 | B80 to C32 | 80 | 40 | 25 |
| 3 (321, 347) | SH1 | F593J | 1/4 to 5/8, incl. | 120 – 160 | 95 | C24 to C36 | 115 | 90 | 12 |
| 3 (321, 347) | SH2 | F593K | 3/4 to 1, incl. | 110 – 150 | 75 | C20 to C32 | 105 | 70 | 15 |
| 3 (321, 347) | SH3 | F593L | 1-1/8 to 1-1/4, incl. | 100 – 140 | 60 | B95 to C30 | 95 | 55 | 20 |
| 3 (321, 347) | SH4 | F593M | 1-3/8 to 1-1/2, incl. | 95 – 130 | 45 | B90 to C28 | 90 | 40 | 28 |
| Ferritic Alloys | |||||||||
| 4 (430, 430F) | AF | F593X | 1/4 to 1-1/2, incl. | 55 – 75 | 30 | B85 max | 50 | 25 | — |
| 4 (430, 430F) | A | F593N | 1/4 to 1-1/2, incl. | 55 – 75 | 30 | B85 max | 50 | 25 | — |
| 4 (430, 430F) | CW1 | F593V | 1/4 to 5/8, incl. | 60 – 105 | 40 | B75 to 98 | 55 | 35 | — |
| 4 (430, 430F) | CW2 | F593W | 3/4 to 1-1/2, incl. | 55 – 100 | 30 | B65 to 95 | 50 | 25 | — |
| Martensitic Alloys | |||||||||
| 5 (410, 416, 416Se) | H | F593P | 1/4 to 1-1/2, incl. | 110 – 140 | 90 | C20 to 30 | 110 | 90 | 18 |
| 5 (410, 416, 416Se) | H | F593P | 1/4 to 1-1/2, incl. | 110 – 140 | 90 | C20 to 30 | 110 | 90 | 18 |
| 5 (410, 416, 416Se) | HT | F593R | 1/4 to 1-1/2, incl. | 160 – 190 | 120 | C34 to 45 | 160 | 120 | 12 |
| 6 (431) | H | F593S | 1/4 to 1-1/2, incl. | 125 – 150 | 100 | C25 to 32 | 125 | 100 | 15 |
| 6 (431) | HT | F593T | 1/4 to 1-1/2, incl. | 180 – 220 | 140 | C40 to 48 | 180 | 140 | 10 |
| Precipitation Hardening Alloy | |||||||||
| 7 (630) | AH | F593U | 1/4 to 1-1/2, incl. | 135 – 170 | 105 | C28 to 38 | 135 | 105 | 16 |
Equivalent Grades of SF593 Studs
| Alloy Group | Alloy Designation | Alloy Type |
|---|---|---|
| 1 | 303, 304, 304L, 305, 384, XM1, 18-9LW, 302HQ, 303Se | Austenitic |
| 2 | 316, 316L | Austenitic |
| 3 | 321, 347 | Austenitic |
| 4 | 430, 430F | Ferritic |
| 5 | 410, 416, 416Se | Martensitic |
| 6 | 431 | Martensitic |
| 7 | 630 (17-4) | Precipitation Hardening |
ASTM F593 Bolts Dimension Chart
| Diameter (D) | Body Diameter (D) | Across the Flats (F) | Across the Corners © | Head Height (H) | Thread Lengths (T) | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| MAX | MIN | MAX | MIN | MAX | MIN | MAX | MIN | < 6” | > 6” | |
| 1/2 | 0.515 | 0.482 | 0.875 | 0.85 | 1.01 | 0.969 | 0.364 | 0.302 | 1.25 | 1.5 |
| 5/8 | 0.642 | 0.605 | 1.062 | 1.031 | 1.227 | 1.175 | 0.444 | 0.378 | 1.5 | 1.75 |
| 3/4 | 0.768 | 0.729 | 1.25 | 1.212 | 1.443 | 1.383 | 0.524 | 0.455 | 1.75 | 2 |
| 7/8 | 0.895 | 0.852 | 1.438 | 1.394 | 1.66 | 1.589 | 0.604 | 0.531 | 2 | 2.25 |
| 1 | 1.022 | 0.976 | 1.625 | 1.575 | 1.876 | 1.796 | 0.7 | 0.591 | 2.25 | 2.5 |
| 1 1/8 | 1.149 | 1.098 | 1.812 | 1.756 | 2.093 | 2.002 | 0.78 | 0.658 | 2.5 | 2.75 |
| 1 1/4 | 1.277 | 1.223 | 2 | 1.938 | 2.309 | 2.209 | 0.876 | 0.749 | 2.75 | 3 |
| 1 3/8 | 1.404 | 1.345 | 2.188 | 2.119 | 2.526 | 2.416 | 0.94 | 0.81 | 3 | 3.25 |
| 1 1/2 | 1.531 | 1.47 | 2.375 | 2.3 | 2.742 | 2.622 | 1.036 | 0.902 | 3.25 | 3.5 |
| 1 3/4 | 1.785 | 1.716 | 2.75 | 2.662 | 3.175 | 3.035 | 1.196 | 1.054 | 3.75 | 4 |
| 2 | 2.039 | 1.964 | 3.125 | 3.025 | 3.608 | 3.449 | 1.388 | 1.175 | 4.25 | 4.5 |
| 2 1/4 | 2.305 | 2.214 | 3.5 | 3.388 | 4.041 | 3.862 | 1.548 | 1.327 | 4.75 | 5 |
| 2 1/2 | 2.559 | 2.461 | 3.875 | 3.75 | 4.474 | 4.275 | 1.708 | 1.479 | 5.25 | 5.5 |
| 2 3/4 | 2.827 | 2.711 | 4.25 | 4.112 | 4.907 | 4.688 | 1.869 | 1.632 | 5.75 | 6 |
| 3 | 3.081 | 2.961 | 4.625 | 4.475 | 5.34 | 5.102 | 2.06 | 1.815 | 6.25 | 6. |
Dimension of F593 Stainless Steel Hex Bolt
| NOMINAL SIZE (D) | BODY DIAMETER | HEAD THICKNEASTM A193 | ACROASTM A193 THE FLATS | ACROASTM A193 CORNERS | ||||
|---|---|---|---|---|---|---|---|---|
| D (MAX) | D (MIN) | H (MAX) | H (MIN) | F (MAX) | F (MIN) | C (MAX) | C (MIN) | |
| m10 | 10.00 | 9.78 | 6.63 | 6.17 | 17.00 | 15.73 | 18.48 | 17.77 |
| m12 | 12.00 | 11.73 | 7.76 | 4.24 | 19.00 | 17.73 | 20.78 | 20.03 |
| m14 | 14.00 | 13.73 | 9.09 | 8.51 | 22.00 | 20.67 | 24.25 | 23.35 |
| m16 | 16.00 | 15.73 | 10.32 | 9.68 | 24.00 | 23.67 | 27.71 | 26.75 |
| m20 | 20.00 | 19.67 | 12.88 | 12.12 | 30.00 | 29.16 | 34.64 | 32.95 |
| m24 | 24.00 | 23.67 | 15.44 | 14.56 | 36.00 | 35.00 | 41.57 | 39.55 |
| m30 | 30.00 | 29.67 | 19.48 | 17.92 | 46.00 | 45.00 | 53.12 | 50.85 |
| m36 | 36.00 | 35.61 | 23.38 | 21.63 | 55.00 | 53.80 | 63.51 | 60.79 |
| m42 | 42.00 | 41.38 | 26.97 | 25.03 | 65.00 | 62.90 | 75.06 | 71.71 |
| m48 | 48.00 | 47.38 | 31.07 | 28.93 | 75.00 | 72.60 | 86.60 | 82.76 |
| m56 | 56.00 | 55.26 | 36.2 | 33.80 | 85.00 | 82.20 | 98.15 | 93.71 |
| m64 | 64.00 | 63.26 | 41.32 | 38.68 | 95.00 | 91.80 | 109.70 | 104.65 |
| m72 | 72.00 | 71.26 | 46.45 | 43.55 | 105.00 | 101.40 | 121.24 | 115.60 |
| m80 | 80.00 | 79.26 | 51.58 | 48.42 | 115.00 | 111.00 | 132.72 | 126.54 |
| m90 | 90.00 | 89.13 | 57.74 | 54.26 | 130.00 | 125.50 | 150.11 | 143.07 |
| m100 | 90.00 | 99.13 | 63.9 | 60.10 | 145.00 | 140.00 | 167.43 | 159.60 |
ASTM F593 Threaded Rod Torque Chart
| BOLT DIA |
Torque FT-LBS | ||
|---|---|---|---|
| 30% Initial Torque |
70% Torque |
100% Final Torque |
|
| 1/2 | 16 | 36 | 52 |
| 9/16 | 23 | 53 | 75 |
| 5/8 | 31 | 73 | 104 |
| 3/4 | 55 | 129 | 184 |
| 7/8 | 71 | 166 | 237 |
| 1 | 107 | 249 | 356 |
| 1.1/8 | 127 | 297 | 424 |
| 1.1/4 | 179 | 417 | 596 |
| 1.3/8 | 186 | 435 | 622 |
| 1.1/2 | 246 | 574 | 821 |
| 1.9/16 | 168 | 392 | 560 |
| 1.5/8 | 191 | 445 | 636 |
| 1.3/4 | 240 | 561 | 801 |
| 1.7/8 | 298 | 696 | 994 |
| 2 | 366 | 853 | 1219 |
| 2.1/4 | 529 | 1234 | 1762 |
| 2.1/2 | 733 | 1709 | 2442 |
| 2.3/4 | 986 | 2300 | 3285 |
| 3 | 1289 | 3008 | 4297 |
| BOLT DIA |
Torque Nm | ||
|---|---|---|---|
| 30% Initial Torque |
70% Torque |
100% Final Torque |
|
| 1/2 | 22 | 49 | 71 |
| 9/16 | 31 | 72 | 102 |
| 5/8 | 42 | 99 | 141 |
| 3/4 | 75 | 175 | 249 |
| 7/8 | 96 | 225 | 321 |
| 1 | 145 | 338 | 483 |
| 1.1/8 | 172 | 403 | 575 |
| 1.1/4 | 243 | 565 | 808 |
| 1.3/8 | 252 | 590 | 843 |
| 1.1/2 | 334 | 778 | 1113 |
| 1.9/16 | 228 | 531 | 759 |
| 1.5/8 | 259 | 603 | 862 |
| 1.3/4 | 325 | 761 | 1086 |
| 1.7/8 | 404 | 944 | 1348 |
| 2 | 496 | 1157 | 1653 |
| 2.1/4 | 717 | 1673 | 2389 |
| 2.1/2 | 994 | 2317 | 3311 |
| 2.3/4 | 1337 | 3118 | 4454 |
| 3 | 1748 | 4078 | 5826 |
“Contact Jade Special Metals today with your requirement for ASTM F593 Bolts. We assure you of the best quote.
Applications of ASTM F593 Fasteners
- Water & Wastewater Treatment
- Food & Beverage Processing
- Chemical Processing
- Architectural & Construction
- Marine Hardware
- Power Generation
- Petrochemicals
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FAQ’s About ASTM F593 Fasteners
What is the difference between ASTM A193 and ASTM F593?
F593 bolts need ASTM F594 hex nuts of matching stainless steel type. One significant difference between A193 and F593 hot-forged bolts is that F593 also requires testing for intergranular corrosion susceptibility, which is absent in the A193 specification.
What is the strength of ASTM F593 bolts?
There are various austenitic, ferritic, martensitic and precipitation hardened steel types used for ASTM F593 Stainless Steel Bolts. The minimum tensile strength ranging from 65ksi to 100ksi.
Can I weld ASTM F593 fasteners?
Generally, yes, but with caution. Most austenitic stainless steels (like 304 and 316) are weldable. However, it’s critical to understand that the heat from welding will anneal the area around the weld, which will cause any fastener in the CW (Cold Worked) condition to lose its added strength in that zone. For structural welding applications, it is always best to consult with a welding engineer.
Do these fasteners come with a Material Test Certificate (MTC)?
Yes. As a reputable manufacturer and supplier, Jade Special Metals provides a Material Test Certificate (MTC) as per EN 10204 3.1 with every shipment. This document provides full traceability and certifies that the chemical and mechanical properties of the fasteners meet the ASTM F593 standard.
