
Honesty Steel & Alloys Ltd. is a leading Manufacturer, Exporter & Supplier of Stainless Steel 347/347H Fasteners, offering high-quality fasteners for demanding applications across chemical processing, petrochemical, power generation, oil & gas, aerospace, heat-treatment, and other industrial sectors.
Stainless Steel 347 is an austenitic stainless steel stabilized with columbium (niobium), providing excellent resistance to intergranular corrosion after exposure to elevated temperatures. SS 347H is the higher-carbon version of Grade 347 and is designed primarily for high-temperature applications where enhanced creep strength and stress-rupture properties are required. Stainless Steel 347/347H Hex Bolts feature a six-sided head designed for installation using standard spanners or wrenches.
Stainless Steel 347 Fasteners are manufactured from stabilized austenitic stainless steel containing niobium to improve resistance to intergranular corrosion. The grade is particularly suitable for applications involving repeated heating and cooling or exposure to temperatures where unstabilized stainless steels may become susceptible to sensitization. Stainless Steel 347/347H Stud Bolts are threaded rods used with nuts for fastening flanges, valves, pressure vessels and piping components.
Stainless Steel 347H Fasteners contain a higher carbon level than Grade 347 and are primarily intended for high-temperature service. The higher carbon content provides improved high-temperature strength, creep resistance and stress-rupture properties.
We manufacture and supply SS 347/347H Bolts, Nuts, Screws, Washers, Studs, Threaded Rods, U-Bolts, Anchor Bolts, Eye Bolts, Hex Bolts, Socket Head Cap Screws, Machine Screws and other customized fasteners according to customer requirements and applicable ASTM, ASME, DIN, ISO, ANSI and other international standards.
| Property | Specification |
|---|---|
| Product | Stainless Steel 347/347H Fasteners |
| Material | Austenitic Stainless Steel |
| Grade | SS 347 / 347H |
| UNS | S34700 / S34709 |
| Common Designation | A2 Stainless Steel |
| Standards | ASTM / ASME, ISO, DIN, BS, EN |
| Bolt Standards | ASME B18.2.1, DIN, ISO, BS |
| Nut Standards | ASME B18.2.2, DIN, ISO, BS |
| Screw Standards | ASME / ISO / DIN / BS |
| Thread | Metric / UNC / UNF / BSW / BSF |
| Thread Type | Coarse / Fine |
| Surface | Plain / Passivated / Polished |
| Finish | Natural / Bright / Customized |
| Types | Nuts, Bolts, Screws, Socket Screw, Sockets, Studs, Screw, Nut, Spring Washers, Hex Set Screw, Socket Hexagon Head Screw, Cap Screw, Wing Screw, Pan Head Screw, Machine Screw, Socket Head Cap Screw, Allen Cap screw, Wing Screw, Washers, Studs, Anchors, Hex Nut,Marine Anchors, Hexagon Nut, Hex Coupling Nut, Hex Domed Cap Nuts, Square Nut, Stud Bolts, Hex Head Bolts, Anchor Bolt, U- Bolts, J Bolts, T-Head Bolts, Mushroom Head Square Neck Bolts, Eye Bolt, Foundation Bolts, Structural Bolts |
| Manufacturing | Cold Forged / Hot Forged / Machined |
| Size | Metric & Imperial |
| Supply Condition | Annealed / Cold Worked / As Specified |
| Application | Industrial, Construction, Engineering, Fabrication |
| STANDARD | WERKSTOFF NR. | UNS | JIS | GOST | EN |
|---|---|---|---|---|---|
| SS 347 | 1.4550 | S34700 | SUS 347 | 08Ch18N12B | X6CrNiNb18-10 |
| SS 347H | 1.4961 | S34709 | SUS 347H | – | X6CrNiNb18-12 |
| Grade | C | Mn | Si | P | S | Cr | Cb | Ni | Fe |
|---|---|---|---|---|---|---|---|---|---|
| SS 347 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 20.00 | 10xC – 1.10 | 9.00 – 13.00 | 62.74 min |
| SS 347H | 0.04 – 0.10 | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 17.00 – 19.00 | 8xC – 1.10 | 9.0 -13.0 | 63.72 min |
| Grades | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|---|
| SS 347 / 347H | 8.0 g/cm3 | 1400 °C (2550 °F) | Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 35 % |
Stainless Steel 347/347H Carriage Bolts
Stainless Steel 347/347H Eye Bolts
Stainless Steel 347/347H Self Tapping Screws
Stainless Steel 347/347H Anchor Bolt
Stainless Steel 347/347H U Bolts
Stainless Steel 347/347H Machine Screws
Stainless Steel 347/347H Socket Screws
Stainless Steel 347/347H Hex Coupling Nut
Stainless Steel 347/347H Hex Nuts
Stainless Steel 347/347H Lock Nuts
Stainless Steel 347/347H Shoulder Bolts
Stainless Steel 347/347H T Head Bolts
Stainless Steel 347/347H Flat Washers
Stainless Steel 347/347H Lock Washers
Stainless Steel 347/347H Stud Bolts
Stainless Steel 347/347H Flanged Bolts
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| Types | Size Range | Class | Standards |
|---|---|---|---|
| Hex Nut | M3 to M30 | A2 – 70/80, A4 – 70/80 | DIN 934 / ISO 4032 |
| Hex Head Screw (Full Thread) | M3 to M30 | A2 – 70/80, A4 – 70/80 | DIN 933 / ISO 4017 |
| 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 |
| Plain Washer | M3 to M64 | A2, A4 | DIN 125 A |
| Flat – Section Spring Washer | M3 to M36 | A2, A4 | DIN 127 B |
| Square – Section Spring Washer | M3 to M36 | A2, A4 | DIN 7980 |
| Socket Head Cap Screw | M3 to M30 | A2 – 70/80, A4 – 70/80 | DIN 912 / ISO 4762 |
| Product | Typical Imperial Range |
|---|---|
| Bolts | 1/8" to 4" |
| Screws | 1/8" to 2" |
| Nuts | 1/8" to 4" |
| Washers | 1/8" to 4" |
| Studs | 1/4" to 4" |
| Threaded Rods | 1/4" to 4" |
| ASME B18.1.1 | Small Solid Rivets | ASME B18.8.1 | Clevis Pins and Cotter Pins |
| ASME B18.1.2 | Large Rivets | ASME B18.8.2 | Taper Pins, Dowel Pins, Straight Pins, Grooved Pins and Spring Pins |
| ASME B18.2.1 | Square and Hex Bolts and Screws | ASME B18.9 | Plow Bolts |
| ASME B18.2.2 | Square and Hex Nuts | ASME B18.10 | Track Bolts and Nuts |
| ASME B18.2.6 | Fasteners for use in Structural Applications | ASME B18.11 | Miniature Screws |
| ASME B18.3 | Socket Cap, Shoulder and Set Screws | ASME B18.13 | Screws and Washer Assemblies (Sems) |
| ASME B18.5 | Round Head Bolts | ASME B18.15 | Forged Eyebolts |
| ASME B18.6.2 | Slotted Head Cap Screws, Square Head Set Screws, and Slotted Headless Set Screws | ASME B18.17 | Wing Nuts, Thumb Screws and Wing Screws |
| ASME B18.6.3 | Machine Screws and Machine Screws Nuts | ASME B18.21.1 | Lock Washers |
| ASME B18.6.4 | Thread Forming and Thread Cutting Tapping Screws and Metallic Drive Screws | ASME B18.22.1 | Plain Washers |
| ASME B18.7 | General Purpose Semi- Tubular Rivets, Full Tubular Rivets, Split Rivets and Rivet Caps | ASME B18.23.1 | Beveled Washers |
| Nominal or Basic Product Diameter | E | F | G | H | J | LT (Thread Length) | Y | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Body Diameter | Width Across Flats | Width Across Corners | Head Height | Wrenching Height | For Screw Lengths | For Screw Lengths | Transition Thread Length | ||||||||
| 1/4 | 0.25 | 0.25 | 0.245 | 7/16 | 0.438 | 0.428 | 0.505 | 0.488 | 5/32 | 0.163 | 0.150 | 0.106 | 0.750 | 1.000 | 0.250 |
| 5/16 | 0.3125 | 0.3125 | 0.3065 | 1/2 | 0.500 | 0.489 | 0.577 | 0.557 | 13/64 | 0.211 | 0.195 | 0.140 | 0.875 | 1.125 | 0.278 |
| 3/8 | 0.375 | 0.375 | 0.369 | 9/16 | 0.562 | 0.551 | 0.650 | 0.628 | 15/64 | 0.243 | 0.226 | 0.160 | 1.000 | 1.250 | 0.312 |
| 7/16 | 0.4375 | 0.4375 | 0.4305 | 5/8 | 0.625 | 0.612 | 0.722 | 0.698 | 9/32 | 0.291 | 0.272 | 0.195 | 1.125 | 1.375 | 0.357 |
| 1/2 | 0.5 | 0.5 | 0.493 | 3/4 | 0.750 | 0.736 | 0.866 | 0.840 | 5/16 | 0.323 | 0.302 | 0.215 | 1.250 | 1.500 | 0.385 |
| 9/16 | 0.5625 | 0.5625 | 0.5545 | 13/16 | 0.812 | 0.798 | 0.938 | 0.910 | 23/64 | 0.371 | 0.348 | 0.250 | 1.375 | 1.625 | 0.417 |
| 5/8 | 0.625 | 0.625 | 0.617 | 15/16 | 0.938 | 0.922 | 1.083 | 1.051 | 25/64 | 0.403 | 0.378 | 0.269 | 1.500 | 1.750 | 0.455 |
| 3/4 | 0.75 | 0.75 | 0.741 | 1-1/8 | 1.125 | 1.100 | 1.299 | 1.254 | 15/32 | 0.483 | 0.455 | 0.324 | 1.750 | 2.000 | 0.500 |
| 7/8 | 0.875 | 0.875 | 0.866 | 1-5/16 | 1.312 | 1.285 | 1.516 | 1.465 | 35/64 | 0.563 | 0.531 | 0.378 | 2.000 | 2.250 | 0.556 |
| 1 | 1 | 1 | 0.99 | 1-1/2 | 1.500 | 1.469 | 1.732 | 1.675 | 39/64 | 0.627 | 0.591 | 0.416 | 2.250 | 2.500 | 0.625 |
| 1-1/8 | 1.125 | 1.125 | 1.114 | 1-11/16 | 1.688 | 1.631 | 1.949 | 1.859 | 11/16 | 0.718 | 0.658 | 0.461 | 2.500 | 2.750 | 0.714 |
| 1-1/4 | 1.25 | 1.25 | 1.239 | 1-7/8 | 1.875 | 1.812 | 2.165 | 2.066 | 25/32 | 0.813 | 0.749 | 0.530 | 2.750 | 3.000 | 0.714 |
| 1-1/2 | 1.5 | 1.5 | 1.488 | 2-1/4 | 2.250 | 2.175 | 2.598 | 2.480 | 15/16 | 0.974 | 0.902 | 0.640 | 3.250 | 3.500 | 0.833 |
| 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 |
| Nominal Size (Inch) | Basic Diameter (mm) | Full-Size Body Diameter (E) | Width Across Flats (F) | Width Across Corners (G) | Head Height (H) | Fillet Radius (R) | Nominal Thread Length (LT) | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max | Min | Basic (inch) | Max | Min | Max | Min | Basic (inch) | Max | Min | Max | Min | 6 in. & Shorter | Over 6 in. | ||
| 1/4 | 0.25 | 0.26 | 0.237 | 7/16 | 0.438 | 0.425 | 0.505 | 0.484 | 11/64 | 0.188 | 0.15 | 0.03 | 0.01 | 0.75 | 1.0 |
| 5/16 | 0.3125 | 0.324 | 0.298 | 1/2 | 0.5 | 0.484 | 0.577 | 0.552 | 7/32 | 0.235 | 0.195 | 0.03 | 0.01 | 0.875 | 1.125 |
| 3/8 | 0.375 | 0.388 | 0.36 | 9/16 | 0.562 | 0.544 | 0.65 | 0.62 | 1/4 | 0.268 | 0.226 | 0.03 | 0.01 | 1.0 | 1.25 |
| 7/16 | 0.4375 | 0.452 | 0.421 | 5/8 | 0.625 | 0.603 | 0.722 | 0.687 | 19/64 | 0.347 | 0.272 | 0.03 | 0.01 | 1.125 | 1.375 |
| 1/2 | 0.5 | 0.515 | 0.482 | 3/4 | 0.75 | 0.725 | 0.866 | 0.826 | 11/32 | 0.364 | 0.302 | 0.03 | 0.01 | 1.25 | 1.5 |
| 5/8 | 0.625 | 0.642 | 0.605 | 15/16 | 0.938 | 0.906 | 1.083 | 1.033 | 27/64 | 0.444 | 0.378 | 0.06 | 0.02 | 1.5 | 1.75 |
| 3/4 | 0.75 | 0.768 | 0.729 | 1 1/8 | 1.125 | 1.088 | 1.299 | 1.24 | 1/2 | 0.524 | 0.455 | 0.06 | 0.02 | 1.75 | 2.0 |
| 7/8 | 0.875 | 0.895 | 0.852 | 1 5/16 | 1.312 | 1.269 | 1.516 | 1.447 | 37/64 | 0.604 | 0.531 | 0.06 | 0.02 | 2.0 | 2.25 |
| 1 | 1.0 | 1.022 | 0.976 | 1 1/2 | 1.5 | 1.45 | 1.732 | 1.653 | 43/64 | 0.7 | 0.591 | 0.09 | 0.03 | 2.25 | 2.5 |
| 1 1/8 | 1.125 | 1.149 | 1.098 | 1 11/16 | 1.688 | 1.631 | 1.949 | 1.859 | 3/4 | 0.78 | 0.658 | 0.09 | 0.03 | 2.5 | 2.75 |
| 1 1/4 | 1.25 | 1.277 | 1.223 | 1 7/8 | 1.875 | 1.812 | 2.165 | 2.066 | 27/32 | 0.876 | 0.749 | 0.09 | 0.03 | 2.75 | 3.0 |
| 1 3/8 | 1.375 | 1.404 | 1.345 | 2 1/16 | 2.062 | 1.994 | 2.382 | 2.273 | 29/32 | 0.94 | 0.81 | 0.09 | 0.03 | 3.0 | 3.25 |
| 1 1/2 | 1.5 | 1.531 | 1.47 | 2 1/4 | 2.25 | 2.175 | 2.598 | 2.48 | 1 | 1.036 | 0.902 | 0.09 | 0.03 | 3.25 | 3.5 |
| 1 5/8 | 1.625 | 1.658 | 1.591 | 2 7/16 | 2.438 | 2.356 | 2.815 | 2.616 | 1 3/32 | 1.116 | 0.978 | 0.09 | 0.03 | 3.5 | 3.75 |
| 1 3/4 | 1.75 | 1.785 | 1.716 | 2 5/8 | 2.625 | 2.538 | 3.031 | 2.893 | 1 5/32 | 1.196 | 1.054 | 0.12 | 0.04 | 3.75 | 4.0 |
| 1 7/8 | 1.875 | 1.912 | 1.839 | 2 13/16 | 2.812 | 2.719 | 3.248 | 3.099 | 1 1/4 | 1.276 | 1.13 | 0.12 | 0.04 | 4.0 | 4.25 |
| 2 | 2.0 | 2.039 | 1.964 | 3 | 3.0 | 2.9 | 3.464 | 3.306 | 1 11/32 | 1.388 | 1.175 | 0.12 | 0.04 | 4.25 | 4.5 |
| 2 1/4 | 2.25 | 2.305 | 2.214 | 3 3/8 | 3.375 | 3.262 | 3.897 | 3.719 | 1 1/2 | 1.548 | 1.327 | 0.19 | 0.06 | 4.75 | 5.0 |
| 2 1/2 | 2.5 | 2.559 | 2.461 | 3 3/4 | 3.75 | 3.625 | 4.33 | 4.133 | 1 21/32 | 1.708 | 1.479 | 0.19 | 0.06 | 5.25 | 5.5 |
| 2 3/4 | 2.75 | 2.827 | 2.711 | 4 1/8 | 4.125 | 3.988 | 4.763 | 4.546 | 1 13/16 | 1.869 | 1.632 | 0.19 | 0.06 | 5.75 | 6.0 |
| 3 | 3.0 | 3.081 | 2.961 | 4 1/2 | 4.5 | 4.35 | 5.196 | 4.959 | 2 | 2.06 | 1.815 | 0.19 | 0.06 | 6.25 | 6.5 |
| 3 1/4 | 3.25 | 3.335 | 3.21 | 4 7/8 | 4.875 | 4.712 | 5.629 | 5.372 | 2 3/16 | 2.251 | 1.936 | 0.19 | 0.06 | 6.75 | 7.0 |
| 3 1/2 | 3.5 | 3.589 | 3.461 | 5 1/4 | 5.25 | 5.075 | 6.062 | 5.786 | 2 5/16 | 2.38 | 2.057 | 0.19 | 0.06 | 7.25 | 7.5 |
| 3 3/4 | 3.75 | 3.858 | 3.726 | 5 5/8 | 5.625 | 5.437 | 6.495 | 6.198 | 2 1/2 | 2.572 | 2.241 | 0.19 | 0.06 | 7.75 | 8.0 |
| 4 | 4.0 | 4.111 | 3.975 | 6 | 6.0 | 5.8 | 6.928 | 6.612 | 2 11/16 | 2.764 | 2.424 | 0.19 | 0.06 | 8.25 | 8.5 |
All dimensions are per ASME B18.2.1 Hex Bolt Standards.
| Nominal Size (inch) | Basic Major Diameter of Thread (inch) | Width Across Flats (F) | Width Across Corners (G) | Thickness of Heavy Hex Nuts (H) | Thickness of Heavy Hex Jam Nuts (H1) | Max Runout (FIM) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Basic | Min | Max | Min | Max | Basic | Min | Max | Basic | Min | Max | Up to 150k psi | 150k psi & greater | All grades | ||
| 1/4 | 0.2500 | 1/2 | 0.488 | 0.500 | 0.556 | 0.577 | 15/64 | 0.218 | 0.250 | 11/64 | 0.156 | 0.188 | 0.017 | 0.011 | 0.017 |
| 5/16 | 0.3125 | 9/16 | 0.546 | 0.562 | 0.622 | 0.650 | 19/64 | 0.280 | 0.314 | 13/64 | 0.186 | 0.220 | 0.020 | 0.012 | 0.020 |
| 3/8 | 0.3750 | 11/16 | 0.669 | 0.688 | 0.763 | 0.794 | 23/64 | 0.341 | 0.377 | 15/64 | 0.216 | 0.252 | 0.021 | 0.014 | 0.021 |
| 7/16 | 0.4375 | 3/4 | 0.728 | 0.750 | 0.830 | 0.866 | 27/64 | 0.403 | 0.441 | 17/64 | 0.247 | 0.285 | 0.022 | 0.015 | 0.022 |
| 1/2 | 0.5000 | 7/8 | 0.850 | 0.875 | 0.969 | 1.010 | 31/64 | 0.464 | 0.504 | 19/64 | 0.277 | 0.347 | 0.023 | 0.016 | 0.023 |
| 9/16 | 0.5625 | 15/16 | 0.909 | 0.938 | 1.037 | 1.083 | 35/64 | 0.526 | 0.568 | 21/64 | 0.307 | 0.349 | 0.024 | 0.017 | 0.024 |
| 5/8 | 0.6250 | 1 1/16 | 1.031 | 1.062 | 1.175 | 1.227 | 39/64 | 0.587 | 0.631 | 23/64 | 0.337 | 0.381 | 0.025 | 0.018 | 0.025 |
| 3/4 | 0.7500 | 1 1/4 | 1.212 | 1.250 | 1.382 | 1.443 | 47/64 | 0.710 | 0.758 | 27/64 | 0.398 | 0.446 | 0.027 | 0.020 | 0.027 |
| 7/8 | 0.8750 | 1 7/16 | 1.394 | 1.438 | 1.589 | 1.660 | 55/64 | 0.833 | 0.885 | 31/64 | 0.458 | 0.510 | 0.029 | 0.022 | 0.029 |
| 1 | 1.0000 | 1 5/8 | 1.575 | 1.625 | 1.796 | 1.876 | 63/64 | 0.956 | 1.012 | 35/64 | 0.519 | 0.575 | 0.031 | 0.024 | 0.031 |
| 1 1/8 | 1.1250 | 1 13/16 | 1.756 | 1.812 | 2.002 | 2.093 | 1 7/64 | 1.079 | 1.139 | 39/64 | 0.579 | 0.639 | 0.033 | 0.027 | 0.033 |
| 1 1/4 | 1.2500 | 2 | 1.938 | 2.000 | 2.209 | 2.309 | 1 7/32 | 1.187 | 1.251 | 23/32 | 0.687 | 0.751 | 0.035 | 0.030 | 0.035 |
| 1 3/8 | 1.3750 | 2 3/16 | 2.119 | 2.188 | 2.416 | 2.526 | 1 11/32 | 1.347 | 1.378 | 25/32 | 0.747 | 0.815 | 0.038 | 0.033 | 0.038 |
| 1 1/2 | 1.5000 | 2 3/8 | 2.300 | 2.375 | 2.622 | 2.742 | 1 15/32 | 1.433 | 1.505 | 27/32 | 0.808 | 0.880 | 0.041 | 0.036 | 0.041 |
| 1 5/8 | 1.6250 | 2 9/16 | 2.481 | 2.562 | 2.828 | 2.959 | 1 19/32 | 1.556 | 1.632 | 29/32 | 0.868 | 0.944 | 0.044 | 0.038 | 0.044 |
| 1 3/4 | 1.7500 | 2 3/4 | 2.662 | 2.750 | 3.035 | 3.175 | 1 23/32 | 1.679 | 1.759 | 31/32 | 0.929 | 1.009 | 0.048 | 0.041 | 0.048 |
| 1 7/8 | 1.8750 | 2 15/16 | 2.844 | 2.938 | 3.242 | 3.392 | 1 27/32 | 1.802 | 1.886 | 1 1/32 | 0.989 | 1.073 | 0.051 | 0.044 | 0.051 |
| 2 | 2.0000 | 3 1/8 | 3.025 | 3.125 | 3.449 | 3.608 | 1 31/32 | 1.925 | 2.013 | 1 3/32 | 1.050 | 1.138 | 0.055 | 0.047 | 0.055 |
| 2 1/4 | 2.2500 | 3 1/2 | 3.388 | 3.500 | 3.862 | 4.041 | 2 13/64 | 2.155 | 2.251 | 1 13/64 | 1.155 | 1.251 | 0.061 | 0.052 | 0.061 |
| 2 1/2 | 2.5000 | 3 7/8 | 3.750 | 3.875 | 4.275 | 4.474 | 2 29/64 | 2.401 | 2.505 | 1 29/64 | 1.401 | 1.505 | 0.068 | 0.058 | 0.068 |
| 2 3/4 | 2.7500 | 4 1/4 | 4.112 | 4.250 | 4.688 | 4.907 | 2 45/64 | 2.647 | 2.759 | 1 37/64 | 1.522 | 1.634 | 0.074 | 0.064 | 0.074 |
| 3 | 3.0000 | 4 5/8 | 4.475 | 4.625 | 5.102 | 5.340 | 2 61/64 | 2.893 | 3.013 | 1 45/64 | 1.643 | 1.763 | 0.081 | 0.070 | 0.081 |
| 3 1/4 | 3.2500 | 5 | 4.838 | 5.000 | 5.515 | 5.774 | 3 3/16 | 3.124 | 3.252 | 1 13/16 | 1.748 | 1.876 | 0.087 | 0.075 | 0.087 |
| 3 1/2 | 3.5000 | 5 3/8 | 5.200 | 5.375 | 5.928 | 6.207 | 3 7/16 | 3.370 | 3.506 | 1 15/16 | 1.870 | 2.006 | 0.094 | 0.081 | 0.094 |
| 3 3/4 | 3.7500 | 5 3/4 | 5.562 | 5.750 | 6.341 | 6.640 | 3 11/16 | 3.616 | 3.760 | 2 1/16 | 1.990 | 2.134 | 0.100 | 0.087 | 0.100 |
| 4 | 4.0000 | 6 1/8 | 5.925 | 6.125 | 6.755 | 7.073 | 3 15/16 | 3.862 | 4.014 | 2 3/16 | 2.112 | 2.264 | 0.107 | 0.093 | 0.107 |
All dimensions are as per ASME B18.2.2 Heavy Hex Nuts and Heavy Hex Jam Nuts standards.
| Bolt Size | A | B | C | Weight (lbs.) Per 100 Pieces |
| ID | OD | Thickness | ||
| 1/2 | 9/16 | 13/8 | 0.109 | 4 |
| 5/8 | 11/16 | 13/4 | 0.134 | 8 |
| 3/4 | 13/16 | 2 | 0.148 | 11 |
| 7/8 | 15/16 | 21/4 | 0.165 | 15 |
| 1 | 11/16 | 21/2 | 0.165 | 19 |
| 11/8 | 11/4 | 23/4 | 0.165 | 22 |
| 11/4 | 13/8 | 3 | 0.165 | 26 |
| 13/8 | 11/2 | 31/4 | 0.180 | 33 |
| 11/2 | 15/8 | 31/2 | 0.180 | 38 |
| 15/8 | 13/4 | 33/4 | 0.180 | 43 |
| 13/4 | 17/8 | 4 | 0.180 | 50 |
| 17/8 | 2 | 41/4 | 0.180 | 57 |
| 2 | 21/8 | 41/2 | 0.180 | 63 |
| 21/4 | 23/8 | 43/4 | 0.220 | 83 |
| 21/2 | 25/8 | 5 | 0.238 | 96 |
| 23/4 | 27/8 | 51/4 | 0.259 | 110 |
| 3 | 31/8 | 51/2 | 0.284 | 130 |
| Class 150 Flanges ASME B16.5 (Stud bolt sizes) | Length of Stud Bolts | |||||||
|---|---|---|---|---|---|---|---|---|
| NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
| 1/2 | 3 1/2 | 2 3/8 | 5/8 | 4 | 1/2 | 2 1/4 | – | |
| 3/4 | 3 7/8 | 2 3/4 | 5/8 | 4 | 1/2 | 2 1/2 | – | |
| 1 | 4 1/4 | 3 1/8 | 5/8 | 4 | 1/2 | 2 1/2 | 3 | |
| 1 1/4 | 4 5/8 | 3 1/2 | 5/8 | 4 | 1/2 | 2 3/4 | 3 1/4 | |
| 1 1/2 | 5 | 3 7/8 | 5/8 | 4 | 1/2 | 2 3/4 | 3 1/4 | |
| 2 | 6 | 4 3/4 | 3/4 | 4 | 5/8 | 3 1/4 | 3 3/4 | |
| 2 1/2 | 7 | 5 1/2 | 3/4 | 4 | 5/8 | 3 1/2 | 4 | |
| 3 | 7 1/2 | 6 | 3/4 | 4 | 5/8 | 3 1/2 | 4 | |
| 3 1/2 | 8 1/2 | 7 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
| 4 | 9 | 7 1/2 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
| 5 | 10 | 8 1/2 | 7/8 | 8 | 3/4 | 3 3/4 | 4 1/4 | |
| 6 | 11 | 9 1/2 | 7/8 | 8 | 3/4 | 4 | 4 1/2 | |
| 8 | 13 1/2 | 11 3/4 | 7/8 | 8 | 3/4 | 4 1/4 | 4 3/4 | |
| 10 | 16 | 14 3/4 | 1 | 12 | 7/8 | 4 1/2 | 5 | |
| 12 | 19 | 17 | 1 | 12 | 7/8 | 4 3/4 | 5 1/4 | |
| 14 | 21 | 18 3/4 | 1 1/8 | 12 | 1 | 5 1/4 | 5 3/4 | |
| 16 | 23 1/2 | 21 1/4 | 1 1/8 | 16 | 1 | 5 1/4 | 5 3/4 | |
| 18 | 25 | 22 3/4 | 1 1/4 | 16 | 1 1/8 | 5 3/4 | 6 1/4 | |
| 20 | 27 1/2 | 25 | 1 1/4 | 20 | 1 1/8 | 6 1/4 | 6 3/4 | |
| 24 | 32 | 29 1/2 | 1 1/4 | 20 | 1 1/4 | 6 3/4 | 7 1/4 | |
| Class 300 Flanges ASME B16.5 | Length of Stud Bolts | |||||||
| NPS | Outside Diameter of Flange | The diameter of Bolt Circle | The diameter of Bolt Holes | Number of Bolts | Diameter of Bolts | Raised Face 0.06 in |
Ring Joint | |
| 1/2 | 3 3/4 | 2 5/8 | 5/8 | 4 | 1/2 | 2 1/2 | 3 | |
| 3/4 | 4 5/8 | 3 1/4 | 3/4 | 4 | 5/8 | 3 | 3 1/2 | |
| 1 | 4 7/8 | 3 1/2 | 3/4 | 4 | 5/8 | 3 | 3 1/2 | |
| 1 1/4 | 5 1/4 | 3 7/8 | 3/4 | 4 | 5/8 | 3 1/4 | 3 3/4 | |
| 1 1/2 | 6 1/8 | 4 1/2 | 7/8 | 4 | 3/4 | 3 1/2 | 4 | |
| 2 | 6 1/2 | 5 | 3/4 | 8 | 5/8 | 3 1/2 | 4 | |
| 2 1/2 | 7 1/2 | 5 7/8 | 7/8 | 8 | 3/4 | 4 | 4 1/2 | |
| 3 | 8 1/4 | 6 5/8 | 7/8 | 8 | 3/4 | 4 1/4 | 4 3/4 | |
| 3 1/2 | 9 | 7 1/4 | 7/8 | 8 | 3/4 | 4 1/4 | 5 | |
| 4 | 10 | 7 7/8 | 7/8 | 8 | 3/4 | 4 1/2 | 5 | |
| 5 | 11 | 9 1/4 | 7/8 | 8 | 3/4 | 4 3/4 | 5 1/4 | |
| 6 | 12 1/2 | 10 5/8 | 7/8 | 12 | 3/4 | 4 3/4 | 5 1/2 | |
| 8 | 15 | 13 | 1 | 12 | 7/8 | 5 1/2 | 6 | |
| 10 | 17 1/2 | 15 1/4 | 1 1/8 | 16 | 1 | 6 1/4 | 6 3/4 | |
| 12 | 20 1/2 | 17 3/4 | 1 1/4 | 16 | 1 1/8 | 6 3/4 | 7 1/4 | |
| 14 | 23 | 20 1/4 | 1 1/4 | 20 | 1 1/8 | 7 | 7 1/2 | |
| 16 | 25 1/2 | 22 1/2 | 1 3/8 | 20 | 1 1/4 | 7 1/2 | 8 | |
| 18 | 28 | 24 3/4 | 1 3/8 | 24 | 1 1/4 | 7 3/4 | 8 1/4 | |
| 20 | 30 1/2 | 27 | 1 3/8 | 24 | 1 1/4 | 8 | 8 3/4 | |
| 24 | 36 | 32 | 1 5/8 | 24 | 1 1/2 | 9 | 10 | |
| Screw Diameter | Typical Metric Sizes | Available Head Styles |
|---|---|---|
| Small | M3–M5 | Pan / Flat / Button |
| Medium | M6–M10 | Hex / Socket / Pan / Flat |
| Large | M12–M16 | Socket / Hex / Customized |
| Heavy | M18 and above | Customized / Industrial |
| Hexagon Bolt / Set Screws | Stud Bolt | Hexagon Nuts | Socket Cap screws |
|---|---|---|---|
| DIN 931 | BS4882 | DIN 934 | DIN 912 |
| DIN 933 | DIN 976 | BS 1768 | DIN 6912 |
| BS 1768 | BS 1769 | DIN 7984 | |
| UNI 5731 | BS 1083 | ANSI B18.3 | |
| UNI 5739 | BS 3692 | ISO 4762 | |
| ISO 4014 | ISO 4032 | UNI 5931 | |
| ISO 4017 | ISO 4033 | BS 2470 | |
| BS 1769 | ANSI B18.2.2 | BS 4168 | |
| BS 3692 | |||
| ANSI B18.2.1 | |||
| Socket & Slotted Set Screws | Socket & Slotted Countersunk Screws | Studs | Washers |
| DIN 913 | DIN 963 | DIN 938 | DIN 125 |
| DIN 914 | DIN 7991 | DIN 939 | DIN 9021 |
| DIN 915 | BS 4168 | DIN 2510 | BS 4320 |
| DIN 916 | BS 1981 | BS 4439 | BS 3410 |
| DIN 551 | BS 483 | BS 2693 | |
| DIN 553 | BS 2470 | Spring Washers | |
| DIN 438 | DIN 127 | ||
| BS 4168 | BS 4464 | ||
| BS 1802 |