Fasteners are available in different materials as well as in different shapes and sizes. Stainless Steel Fasteners are designed to be used in high temperature and high pressure applications. These fasteners are available in different grades that decide the applications that they can be best suited for. For instance, a marine grade bolt belongs to a different grade as compared to regular stainless steel. ASTM A193 SS Bolt has high tensile strength and is used for fittings in high temperature and high pressure service, flanges, valves, and pressure vessels. They usually come under B7, B16, B8, and B8M.
However, their selection for a particular application depends upon mechanical properties, service environment, and temperature characteristics. Stainless Steel Nut and Screw are usually categorized into 3 types ferritic, austenitic and martensitic based on their chemical composition. To provide these fasteners with the additive value they are coated with chemicals or are colored. Coated Stainless Steel Fasteners are covered with zinc, xylon, or Teflon. Whereas the colored fasteners may be available in black, golden, charcoal grey, blue, bronze, red, or green. They are put through passivation treatment. This removes the chemical reactivity on the surface by removing the free ions with the help of nitric or citric acid.
Good corrosion resistance is offered by SS Marine Fasteners when coated with chromium oxide. A thin layer of oxide forms on the surface of the fastener which prevents the fastener from rusting and corrosion. Self drill SS Screws can be polished by treating with a process such as cold rolling, softening, and de-scaling. Post this process they remain grey however the smoothness, and brightness, of the fasteners, are improved. Stainless Steel Toggle Bolts are usually spring loaded and go back to their original position after releasing them. The benefit of using a stainless steel fastener is that they are more powerful, easy to install, and low failure rate. Though the initial cost is high the maintenance cost is said to be less.
| Standard | DIN, ASTM and BS |
|---|---|
| Specification | ASTM A193 8C, B6, B8, B8M, B8C, A194 G8, B8T, 8M, 8T |
| Length | 3 to 200 MM |
| Sizes | M3 - M56 3/6 Inch to 2 Inch |
| Size Range | M1.6 - M12 |
| Manufacturing process | Wire Drawing, Heat Treatment, Inspection, Insert tapping, Cold Heading, surface Plating, Packing |
| Export To | Dubai, Brazil, Singapore, Indonesia, Ukraine, India, Oman, Spain, Canada, USA, Ireland, Iran, Egypt, Saudi Arabia, Thailand, Korea, Peru |
| LENGTH | DIAMETER | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| M 5 | M 6 | M 8 | M 10 | M 12 | M 14 | M 16 | M 18 | M 20 | M 22 | |
| 16 mm | 0.448 | 0.743 | 1.590 | 3.211 | ||||||
| 20 mm | 0.598 | 0.812 | 1.711 | 3.411 | 4.892 | |||||
| 25 mm | 0.660 | 0.897 | 1.871 | 3.660 | 5.252 | 8.170 | ||||
| 30 mm | 0.737 | 1.010 | 2.070 | 3.912 | 5.574 | 9.690 | 10.707 | 18.657 | ||
| 35 mm | 0.804 | 1.120 | 2.271 | 4.223 | 5.974 | 10.000 | 11.416 | 16.026 | 19.608 | |
| 40 mm | 0.881 | 1.230 | 2.470 | 4.533 | 6.410 | 10.288 | 12.107 | 16.667 | 20.747 | |
| 45 mm | 0.958 | 1.340 | 2.671 | 4.840 | 6.859 | 10.504 | 12.821 | 17.241 | 21.739 | |
| 50 mm | 1.030 | 1.450 | 2.870 | 5.155 | 7.299 | 11.261 | 13.624 | 17.857 | 22.727 | 28.409 |
| 55 mm | 1.560 | 3.071 | 5.464 | 7.740 | 11.628 | 14.409 | 18.868 | 23.810 | 30.120 | |
| 60 mm | 1.670 | 3.270 | 5.774 | 8.183 | 12.255 | 15.244 | 20.000 | 25.126 | 32.051 | |
| 65 mm | 1.781 | 3.472 | 6.083 | 8.621 | 12.626 | 16.026 | 21.008 | 26.455 | 34.014 | |
| 70 mm | 1.890 | 3.671 | 6.394 | 9.058 | 12.987 | 16.835 | 22.124 | 27.778 | 35.461 | |
| 75 mm | 2.000 | 3.873 | 6.702 | 9.506 | 13.228 | 17.606 | 23.256 | 29.070 | 39.063 | |
| 80 mm | 2.111 | 4.072 | 7.013 | 10.000 | 13.889 | 18.248 | 24.510 | 30.303 | 40.000 | |
| 90 mm | 4.472 | 7.634 | 10.917 | 14.925 | 19.841 | 26.042 | 33.113 | 41.667 | ||
| 100 mm | 4.873 | 8.251 | 11.820 | 16.340 | 21.459 | 27.778 | 35.714 | 46.296 | ||
| 110 mm | 8.881 | 12.723 | 17.730 | 23.041 | 31.250 | 38.168 | 47.170 | |||
| 120 mm | 9.506 | 13.624 | 18.797 | 24.631 | 32.895 | 40.984 | 50.000 | |||
| 130 mm | 10.101 | 14.535 | 20.000 | 26.316 | 34.722 | 43.478 | 52.632 | |||
| 140 mm | 10.707 | 15.432 | 20.833 | 27.933 | 35.461 | 46.296 | 55.556 | |||
| 150 mm | 11.312 | 16.340 | 22.222 | 29.412 | 37.594 | 48.544 | 58.824 | |||
| 160 mm | 11.905 | 17.241 | 24.272 | 31.056 | 40.984 | 50.505 | 61.728 | |||
| 170 mm | 12.500 | 18.116 | 32.680 | 53.191 | 64.935 | |||||
| 180 mm | 13.123 | 19.011 | 26.882 | 34.247 | 55.556 | 67.568 | ||||
| 190 mm | 13.736 | 19.920 | 35.971 | 58.140 | 70.423 | |||||
| 200 mm | 14.327 | 20.833 | 29.586 | 37.594 | 49.020 | 60.976 | 73.529 | |||
| 220 mm | 15.528 | 22.624 | 40.650 | 65.789 | 79.365 | |||||
| 240 mm | 16.722 | 24.510 | 43.860 | 71.429 | 84.746 | |||||
| 250 mm | 17.301 | 25.381 | 45.455 | 74.627 | 87.719 | |||||
| 260 mm | 17.921 | 26.316 | 47.170 | 76.923 | 90.909 | |||||
| 280 mm | 19.157 | 28.090 | 50.505 | 81.967 | 98.039 | |||||
| 300 mm | 20.325 | 29.940 | 53.763 | 87.719 | 104.167 | |||||
| 320 mm | 31.646 | 56.818 | 92.593 | |||||||
| 340 mm | 33.557 | 60.241 | 98.039 | |||||||
| 360 mm | 35.211 | 63.291 | 104.167 | |||||||
| 380 mm | 37.037 | 66.667 | 108.696 | |||||||
| 400 mm | 39.063 | 69.444 | 113.636 | |||||||
| US (inches) |
Metric (millimeters) |
US (inches) |
Metric (millimeters) |
|---|---|---|---|
| 1/16 | 1.6 | 1-1/2 | 38 |
| 1/8 | 3.2 | 1-5/8 | 41 |
| 3/16 | 4.8 | 1-3/4 | 45 |
| 1/4 | 6.4 | 1-7/8 | 48 |
| 5/16 | 7.9 | 2 | 51 |
| 3/8 | 9.5 | 2-1/4 | 57 |
| 11/16 | 17 | 3-1/2 | 89 |
| 7/16 | 11 | 2-1/2 | 64 |
| 1/2 | 13 | 2-3/4 | 70 |
| 9/16 | 14 | 3 | 76 |
| 5/8 | 16 | 3-1/4 | 83 |
| 3/4 | 19 | 3-3/4 | 95 |
| 13/16 | 21 | 4 | 102 |
| 7/8 | 22 | 4-1/2 | 114 |
| 15/16 | 24 | 5 | 127 |
| 1-1/8 | 29 | 6 | 152 |
| 1-1/4 | 32 | 6-1/2 | 165 |
| 1 | 25 | 5-1/2 | 140 |
| 1-3/8 | 35 | 7 | 178 |
| Price list of Stainless Steel Fasteners | SS Marine Fasteners Price in India (INR) | SS Fasteners Price in USD | Polished SS Fasteners Price in UAE Dirham |
|---|---|---|---|
| STAINLESS STEEL SELF-LOCKING Bolt, D1=10,L=40 Per Unit | INR 553 | 7.44 USD | 27.30 UAE Dirham |
| Stainless steel Hexagon Nut #M4 Per Unit | INR 20 | 0.27 USD | 0.99 UAE Dirham |
| SS 304 HALF HEX SMALL FLANG (RIVET NUTS) SIZE M8 Per Kg | INR 587 | 7.89 USD | 28.99 UAE Dirham |
| TYPE 18-8 STAINLESS STEEL-FULLY THREADED STUD 3/8 INCH Per Unit | INR 385 | 5.18 USD | 19.01 UAE Dirham |
Threads Per Inch |
SS Bolt Size Inches or # |
in Inch-Pounds Standard Dry Torque |
|||||
304 SS Fasteners |
316 SS Fasteners |
||||||
| 56 | #2 | 2.6 | 2.5 | ||||
| 64 | 3.2 | 3.0 | |||||
| 48 | #3 | 4.0 | 3.9 | ||||
| 56 | 4.6 | 4.4 | |||||
| 40 | #4 | 5.5 | 5.2 | ||||
| 48 | 6.9 | 6.6 | |||||
| 40 | #5 | 8.1 | 7.7 | ||||
| 44 | 9.8 | 9.4 | |||||
| 32 | #6 | 10.1 | 9.6 | ||||
| 40 | 12.7 | 12.1 | |||||
| 32 | #8 | 20.7 | 19.8 | ||||
| 36 | 23.0 | 22.0 | |||||
| 24 | #10 | 23.8 | 22.8 | ||||
| 32 | 33.1 | 31.7 | |||||
Bolt Size in inch or # |
in Inch-Pounds Standard Dry Torque |
||||||
304 Stainless Steel Fasteners |
|||||||
| 1/4 | 78.8 | ||||||
| 99.0 | |||||||
| 5/16 | 138 | ||||||
| 147 | |||||||
| 3/8 | 247 | ||||||
| 271 | |||||||
| 7/16 | 393 | ||||||
| 418 | |||||||
| 1/2 | 542 | ||||||
| 565 | |||||||
Bolt Size in Inches or # |
in Inch-Pounds Standard Dry Torque |
||||||
304 Stainless Steel Fasteners |
|||||||
| 9/16 | 713 | ||||||
| 787 | |||||||
| 5/8 | 1160 | ||||||
| 1301 | |||||||
| 3/4 | 1582 | ||||||
| 1558 | |||||||
| 7/8 | 2430 | ||||||
| 2420 | |||||||
| 1 | 3595 | ||||||
| 3250 | |||||||
Bolt Size in Inches or # |
in Foot-Pounds Standard Dry Torque |
||||||
304 Stainless Steel Fasteners |
|||||||
| 1 1/8 | 432 | ||||||
| 408 | |||||||
| 1 1/4 | 546 | ||||||
| 504 | |||||||
| 1 1/2 | 930 | ||||||
| 732 | |||||||
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Ti | Fe | |
| 304 | min. | 18.0 | 8.0 | |||||||||
| max. | 0.08 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | 0.10 | ||||
| 304L | min. | 18.0 | 8.0 | |||||||||
| max. | 0.030 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 12.0 | 0.10 | ||||
| 304H | min. | 0.04 | 18.0 | 8.0 | ||||||||
| max. | 0.010 | 2.0 | 0.75 | 0.045 | 0.030 | 20.0 | 10.5 | |||||
| SS 310H | 0.04 0.10 | 2 max | 1.00 max | 0.045 max | 0.030 max | 24.00 26.00 | 19.00 21.00 | 53.885 min | ||||
| 316 | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316L | min. | 16.0 | 2.03.0 | 10.0 | ||||||||
| max. | 0.035 | 2.0 | 0.75 | 0.045 | 0.030 | 18.0 | 14.0 | |||||
| 316TI | 0.08 max | 10.00 14.00 | 2.0 max | 0.045 max | 0.030 max | 16.00 18.00 | 0.75 max | 2.00 3.00 | ||||
| 317 | 0.08 max | 2 max | 1 max | 0.045 max | 0.030 max | 18.00 20.00 | 3.00 4.00 | 57.845 min | ||||
| SS 317L | 0.035 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 18.00 20.00 | 3.00 4.00 | 11.00 15.00 | 57.89 min | |||
| SS 321 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 19.00 | 9.00 12.00 | 0.10 max | 5(C+N) 0.70 max | |||
| SS 321H | 0.04 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 19.00 | 9.00 12.00 | 0.10 max | 4(C+N) 0.70 max | |||
| 347/ 347H | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 20.00 | 9.0013.00 | |||||
| 410 | min. | 11.5 | ||||||||||
| max. | 0.15 | 1.0 | 1.00 | 0.040 | 0.030 | 13.5 | 0.75 | |||||
| 446 | min. | 23.0 | 0.10 | |||||||||
| max. | 0.2 | 1.5 | 0.75 | 0.040 | 0.030 | 30.0 | 0.50 | 0.25 | ||||
| 904L | min. | 19.0 | 4.00 | 23.00 | 0.10 | |||||||
| max. | 0.20 | 2.00 | 1.00 | 0.045 | 0.035 | 23.0 | 5.00 | 28.00 | 0.25 | |||
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
|---|---|---|---|---|---|---|---|
| SS 304 | 1.4301 | S30400 | SUS 304 | 304S31 | 08Х18Н10 | Z7CN18‐09 | X5CrNi18-10 |
| SS 304L | 1.4306 / 1.4307 | S30403 | SUS 304L | 3304S11 | 03Х18Н11 | Z3CN18‐10 | X2CrNi18-9 / X2CrNi19-11 |
| SS 304H | 1.4301 | S30409 | - | - | - | - | - |
| SS 310 | 1.4841 | S31000 | SUS 310 | 310S24 | 20Ch25N20S2 | - | X15CrNi25-20 |
| SS 310S | 1.4845 | S31008 | SUS 310S | 310S16 | 20Ch23N18 | - | X8CrNi25-21 |
| SS 310H | - | S31009 | - | - | - | - | - |
| SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | - | Z7CND17‐11‐02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
| SS 316L | 1.4404 / 1.4435 | S31603 | SUS 316L | 316S11 / 316S13 | 03Ch17N14M3 / 03Ch17N14M2 | Z3CND17‐11‐02 / Z3CND18‐14‐03 | X2CrNiMo17-12-2 / X2CrNiMo18-14-3 |
| SS 316H | 1.4401 | S31609 | - | - | - | - | - |
| SS 316Ti | 1.4571 | S31635 | SUS 316Ti | 320S31 | 08Ch17N13M2T | Z6CNDT17‐123 | X6CrNiMoTi17-12-2 |
| SS 317 | 1.4449 | S31700 | SUS 317 | - | - | - | - |
| SS 317L | 1.4438 | S31703 | SUS 317L | - | - | - | X2CrNiMo18-15-4 |
| SS 321 | 1.4541 | S32100 | SUS 321 | - | - | - | X6CrNiTi18-10 |
| SS 321H | 1.4878 | S32109 | SUS 321H | - | - | - | X12CrNiTi18-9 |
| SS 347 | 1.4550 | S34700 | SUS 347 | - | 08Ch18N12B | - | X6CrNiNb18-10 |
| SS 347H | 1.4961 | S34709 | SUS 347H | - | - | - | X6CrNiNb18-12 |
| SS 904L | 1.4539 | N08904 | SUS 904L | 904S13 | STS 317J5L | Z2 NCDU 25-20 | X1NiCrMoCu25-20-5 |
| Grade | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Density | Elongation |
|---|---|---|---|---|---|
| 304/ 304L | 1400 °C | 75000 Psi, MPa 515 | 30000 Psi, MPa 205 | 8.0 g/cm3 | 0.35 |
| 316L | 1399 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 8.0 g/cm3 | 0.35 |
| 304H | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 8.0 g/cm3 | 0.4 |
| 317 | 1400 °C (2550 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 7.9 g/cm3 | 0.35 |
| 347 | 1454 °C (2650 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 8.0 g/cm3 | 0.35 |
| 321 | 1457 °C (2650 °F) | Psi 75000 , MPa 515 | Psi 30000 , MPa 205 | 8.0 g/cm3 | 0.35 |
| 904L | 1350 °C (2460 °F) | Psi 71000 , MPa 490 | Psi 32000 , MPa 220 | 7.95 g/cm3 | 0.35 |
| SS Fasteners Type | SS Fasteners SIZE | PROPERTY CLASS | SS Fasteners Standard |
|---|---|---|---|
| Socket Head Cap Screw | M3 to M30 | A2 - 70/80, A4 - 70/80 | DIN 912 / ISO 4762 |
| Hex Head Screw (Full Thread) | M3 to M30 | A2 - 70/80, A4 - 70/80 | DIN 933 / ISO 4017 |
| Hex Nut | M3 to M30 | A2 - 70/80, A4 - 70/80 | DIN 934 / ISO 4032 |
| Plain Washer | M3 to M64 | A2, A4 | DIN 125 A |
| Square - Section Spring Washer | M3 to M36 | A2, A4 | DIN 7980 |
| Hex Head Bolt (Partial Thread) | M4 to M30 | A2 - 70/80, A4 - 70/80 | DIN 931 / ISO 4014 |
| Threaded Rod | M3 to M36 | A2 - 70/80, A4 - 70/80 | DIN 975 |
| Flat - Section Spring Washer | M3 to M36 | A2, A4 | DIN 127 B |

| NOMINAL SIZE (D) | BODY DIAMETER | HEAD Thickness | FLATS | 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 |

| Nominal Sizes or Basic Major Thread Dia | 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 |
| 3/8 | .3750 | 9/16 | .562 | .551 | .650 | .628 | 21/64 | .337 | .479 |
| 5/16 | .3125 | 1/2 | .500 | .489 | .577 | .557 | 17/64 | .273 | .258 |
| 7/16 | .4375 | 11/16 | .688 | .675 | .794 | .768 | 3/8 | .385 | .365 |
| 9/16 | .5625 | 7/8 | .875 | .861 | 1.010 | .982 | 31/64 | .496 | .473 |
| 1/2 | .5000 | 3/4 | .750 | .736 | .866 | .840 | 7/16 | .448 | .427 |
| 5/8 | .6250 | 15/16 | .938 | .922 | 1.083 | 1.051 | 35/64 | .559 | .535 |
| 7/8 | .8750 | 1-5/16 | 1.312 | 1.269 | 1.516 | 1.447 | 3/4 | .776 | .724 |
| 3/4 | .7500 | 1-1/8 | 1.125 | 1.088 | 1.299 | 1.240 | 41/64 | .665 | .617 |
| 1 | 1.0000 | 1-1/2 | 1.500 | 1.450 | 1.732 | 1.653 | 55/64 | .887 | .831 |
| 1-3/8 | 1.3750 | 2-1/16 | 2.062 | 1.994 | 2.382 | 2.273 | 1-11/64 | 1.206 | 1.138 |
| 1-1/8 | 1.1250 | 1-11/16 | 1.688 | 1.631 | 1.949 | 1.859 | 31/32 | .999 | .939 |
| 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 |
| 1-3/4 | 1.7500 | 2-5/8 | 2.625 | 2.538 | 3.031 | 2.893 | 1-1/2 | 1.540 | 1.460 |
| 1-5/8 | 1.6250 | 2-7/16 | 2.438 | 2.356 | 2.815 | 2.686 | 1-25/64 | 1.429 | 1.353 |
| 2 | 2.0000 | 3 | 3.000 | 2.900 | 3.464 | 3.306 | 1-23/32 | 1.763 | 1.675 |
| 2-1/2 | 2.5000 | 3-3/4 | 3.750 | 3.625 | 4.330 | 4.133 | 2-5/32 | 2.209 | 2.105 |
| 2-1/4 | 2.2500 | 3-3/8 | 3.375 | 3.263 | 3.897 | 3.719 | 1-15/16 | 1.986 | 1.890 |
| 2-3/4 | 2.7500 | 4-1/8 | 4.125 | 3.988 | 4.763 | 4.546 | 2-3/8 | 2.431 | 2.319 |

| Nominal Size or Basic Major Thread Diameter | F | G | H | ||||||
| Width Across Flat | Width Across Corner | Thickness | |||||||
| Basic | Maximum | Min | Maximum | Min | Basic | Maximum | 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 |
| Nuts Sizes
(Millimeter) |
Diameter*
(Millimeter) |
Height
(Millimeter) |
||
|---|---|---|---|---|
| Hex Nuts | Jam Nuts | Nylock Nuts | ||
| 2 | 4 | 1.6 | 1.2 | - |
| 3 | 5.5 | 2.4 | 1.8 | 4 |
| 2.5 | 5 | 2 | 1.6 | - |
| 4 | 7 | 3.2 | 2.2 | 5 |
| 6 | 10 | 5 | 3.2 | 6 |
| 5 | 8 | 4 | 2.7 | 5 |
| 7 | 11 | 5.5 | 3.5 | - |
| 10 | 17 | 8 | 5 | 10 |
| 12 | 19 | 10 | 6 | 12 |
| 8 | 13 | 6.5 | 4 | 8 |
| 14 | 22 | 11 | 7 | 14 |
| 18 | 27 | 15 | 9 | 18.5 |
| 20 | 30 | 16 | 10 | 20 |
| 16 | 24 | 13 | 8 | 16 |
| Fasteners METRIC SIZE | A1/ A2/ A4-70 (N) | A1/ A2/ A4-50 (N) | A1/ A2/ A4-80 (N) |
|---|---|---|---|
| M3.5 | 4646 | 3390 | 5424 |
| M3 | 3521 | 2515 | 4024 |
| M5 | 9940 | 7100 | 11360 |
| M4 | 6146 | 4390 | 7024 |
| M7 | 20230 | 14450 | 23120 |
| M6 | 14070 | 10050 | 16080 |
| M10 | 40600 | 29000 | 46400 |
| M8 | 25620 | 18300 | 29280 |
| M14 | 80500 | 57500 | 92000 |
| M12 | 59010 | 42150 | 67440 |
| M18 | 134400 | 96000 | 153600 |
| M39 | 683200 | 488000 | 780800 |
| M16 | 109900 | 78500 | 125600 |
| M22 | 212100 | 151500 | 242400 |
| M20 | 171500 | 122500 | 196000 |
| M27 | 321300 | 229500 | 367200 |
| M24 | 247100 | 176500 | 282400 |
| M33 | 571900 | 408500 | 653600 |
| M30 | 392700 | 280500 | 448800 |
| M36 | 571900 | 408500 | 653600 |
| Unified Inch Coarse and Fine Threads | |||
|---|---|---|---|
| SS Bolt Size | Threads per Inch | ||
| Frac. [No.] | Decimal | UNC | UNF |
| 1/8 [#6] | 0.1380 | 32 | 40 |
| 5/32 [#8] | 0.1640 | 32 | 36 |
| 3/16 [#10] | 0.1900 | 24 | 32 |
| 1/4 | 0.2500 | 20 | 28 |
| 5/16 | 0.3125 | 18 | 24 |
| 3/8 | 0.3750 | 16 | 24 |
| 7/16 | 0.4375 | 14 | 20 |
| 1/2 | 0.5000 | 13 | 20 |
| 9/16 | 0.5625 | 12 | 18 |
| 5/8 | 0.6250 | 11 | 18 |
| 3/4 | 0.7500 | 10 | 16 |
| 7/8 | 0.8750 | 9 | 14 |
| 1 | 1.0000 | 8 | 12, 14 |
| 1 1/8 | 1.1250 | 7 | 12 |
| 1 1/4 | 1.2500 | 7 | 12 |
| 1 3/8 | 1.3750 | 6 | 12 |
| 1 1/2 | 1.5000 | 6 | 12 |
| 1 3/4 | 1.7500 | 5 | - |
| stainless steel press studs Fasteners | Saudi Arabia (KSA), Malaysia, Singapore, Egypt |
|---|---|
| stainless steel concrete Fasteners | France, Hong Kong, UAE, Oman |
| stainless steel eye bolt | Australia, NY 12203 (USA), China, Sweden |
| stainless steel barrel bolt | Turkey, Canada, Dubai, Europe |
| M8*25 stainless steel hex head bolts | South Korea, Singapore, Singapore, Bahrain |
| Hot dip galvanized M4 SS 304 Fasteners | Canada, Philippines, Belgium, Dammam -KSA |
| M10 Stainless Steel Bolts | Colombia, Bangladesh, Finland, Malaysia |
| Marine Grade Stainless Steel Screws | Italy, Poland, Malaysia, Philippines |
| ASME SA193 Stainless Steel Dome Nuts | Spain, Mexico, UK, Singapore |
| A193 SS 316 Square Nuts | Malaysia, Europe, Thailand, Qatar |
| 316L Stainless Steel Self Locking Nuts | Malaysia, Malaysia, Philippines, UK |
| 18-8 SS hex head inflaming retarding bolts | Taiwan, Kuwait, Brazil, South Africa |
| 316L ss hex bolt and nut sizes m12 | Indonesia, UK, Nigeria, Philippines |
| Stainless Steel M3 Low Head Socket Shoulder Screw | Germany, Iran, Singapore, Chile |
| 304 stainless steel zinc plated carriage bolt | Europe, Norway, Malaysia, United Arab Emirates (UAE) |
| Stainless Steel Shoulder Screws Slotted Cap | South Africa, Los Alamos -Mexico, Malaysia, United Kingdom -UK |
| stainless steel allen key bolts m8 | USA, Romania, Ellington -United States, Netherlands |
| 317L SS socket head cap screw | Malaysia, Russia, UAE, Malaysia |
| M6 x 10-150mm stainless steel screws allen bolts | Japan, Thailand, Malaysia, Czechia |