Stainless Steel ASTM A193 B8 Class 2 Bolts
ASTM A193 B8 Class 2 Socket Hexagon Head Screw Anchor Bolt, ASTM A193 B8 Class 2 Hex Head Bolt, ASTM A193 B8 Class 2 Hex Head Bolt, ASTM A193 B8 Class 2 Countersunk Bolt Suppliers in India.
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ASTM A193 B8 Class 2 Hex Head Bolts, ASTM A193 B8 Class 2 Square Head Bolts, ASTM A193 B8 Class 2 Hex Head Bolts, ASTM A193 B8 Class 2 Square Head Bolts Supplier & Exporter in India.
Stainless Steel ASTM A193 B8 Class 2 Bolts Specification
| Grade Specification | ASTM A193 B8 Class 2 |
|---|---|
| SS ASTM A193 B8 Class 2 Bolt size | M02 to M160, Custom Sizes |
| SS ASTM A193 B8 Class 2 Bolts Length | 3 mm to 200 mm |
| SS ASTM A193 B8 Class 2 Bolt | UNF, BSW, BSF, METRIC, UNC, or as required |
| Standard of SS ASTM A193 B8 Class 2 Bolts | IS1364, ISO 4014, ISO 4017, DIN 933, DIN 931, BS 1083, BS 1768, ASME B18.2.1, JIS B1180, DIN 558, ISO 4018, DIN-EN14399-4, DIN 601, ISO 4016, CSN 21301, EU 24016, DIN 7968, DIN7990, ASME B18.2.1, B18.5 |
| Form of SS ASTM A193 B8 Class 2 Bolts | Hex, Threading, Square, Round as per Gauge Etc. |
| Raw materials Source | JSPL, Mukund Steel, Tata Steel, Dhamm Steel, Usha Martin, etc. |
| Threads Configuration | ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads |
| Certification | Dual Certified As per ASTM & ASME Codes |
| Popular Types of Bolts | Hex Bolts, Flange Bolts, Hex Head Bolts, Lag Bolts, Square Bolts, Eye Bolts, U Bolts, T Bolts, Counter sunk Bolts etc. |
| SS ASTM A193 B8 Class 2 Threads | Unless otherwise specified, the threads shall be rolled or cut and tapped horizontally or vertically |
| Test Certificate of Bolts | as per EN 10204 / 3.1 Manufacturer Test Certificate |
| Additional Certifications | PED 97/23/EC Certified, Merkblatt AD 2000 W2 Certified |
| Production process | M24-M100: hot forging, M2-M24: Cold Froging, for custom-made connecting element machining and CNC |
| Head drive of Bolts | Six-Lobe,Phillips,Phillips/Slot, Slotted etc |
| Packing of Bolts | IN BULK: canton, pallet, Small Boxs / carton / pallet, or customer request |
| Surface Coating | Ptfe Coated Bolts Phosphate Coating Teflon Coating Zinc Coating Hot Dipped Galvanizing Coating Cadmium Coating Xylon Coating |
| SS ASTM A193 B8 Class 2 Bolts finishing | Coatings & Finishes : Self-Colour, Passivated, Bright Zinc Plated (BZP), Hot Dip Galvanised (HDG), Sherardized, some special one like DACROMET Geometry and Mechanically Applied coating ,Dacroment, nickel plated, anodizing, plated zinc-nickel Zinc (blue, black, yellow, white), black oxide, |
Stainless Steel ASTM A193 B8 Class 2 Bolts Equivalent Grades
| Grade | Designation |
| B8 CL2 | A193 B8 Class 2: Class 2 Stainless steel, AISI 304, carbide solution treated, strain hardened |
Chemical Composition of SS ASTM A193 B8 Class 2 Bolts
| Element | B8 Class 2 |
| Carbon | 0 – 0.15% |
| Manganese | 0 – 1.00% |
| Phosphorus, max | 0 – 0.040% |
| Sulfur, max | 0 – 0.03% |
| Silicon | 0 – 1.00% |
| Chromium | 11.5 – 13.5% |
| Nickel | – |
| Molybdenum | – |
Mechanical Properties of SS ASTM A193 B8 Class 2 Bolts
| Grade | Size | Tensile ksi, min | Yield, ksi, min | Elong, %, min | RA % min | HBW | HRC |
| B8M Class 2 | Up to 3/4 | 110 | 95 | 15 | 45 | 321 max | 35 max |
| 7/8 – 1 | 100 | 80 | 20 | 45 | |||
| 1-1/8 – 1-1/4 | 95 | 65 | 25 | 45 | |||
| 1-3/8 – 1-1/2 | 90 | 50 | 30 | 45 |
Types of Stainless Steel ASTM A193 B8 Class 2 Bolts
Stainless Steel ASTM A193 B8 Class 2 Hex Bolts
Stainless Steel ASTM A193 B8 Class 2 Allen Cap Bolts
Stainless Steel ASTM A193 B8 Class 2 Hollow Allen Bolts
Stainless Steel ASTM A193 B8 Class 2 T Bolts
Stainless Steel ASTM A193 B8 Class 2 Tap End Stud Bolts
Stainless Steel ASTM A193 B8 Class 2 Double End Stud Bolt
Stainless Steel ASTM A193 B8 Class 2 Fully Threaded Stud Bolts
Stainless Steel ASTM A193 B8 Class 2 Anchor Bolts
Stainless Steel ASTM A193 B8 Class 2 J Bolts
Stainless Steel ASTM A193 B8 Class 2 U Bolts
Stainless Steel ASTM A193 B8 Class 2 Square Bolts
Stainless Steel ASTM A193 B8 Class 2 Carriage Bolts
Stainless Steel ASTM A193 B8 Class 2 Long Eye Bolts
Stainless Steel ASTM A193 B8 Class 2 Shoulder Bolt
SS ASTM A193 B8 Class 2 Bolts Forms & Availability
| Products | Size | |
|---|---|---|
| Stainless Steel ASTM A193 B8 Class 2 Heavy Hex Bolts | Stainless Steel ASTM A193 B8 Class 2 Hollow Hex Bolts | M 02 to M 160, Custom Sizes |
| Stainless Steel ASTM A193 B8 Class 2 Hollow Allen Bolts | Stainless Steel ASTM A193 B8 Class 2 Machine Bolts | |
| Stainless Steel ASTM A193 B8 Class 2 Socket Head Bolts | Stainless Steel ASTM A193 B8 Class 2 Hex Flange Bolts | |
| Stainless Steel ASTM A193 B8 Class 2 Eye Bolts | Stainless Steel ASTM A193 B8 Class 2 Lag Bolts | |
| Stainless Steel ASTM A193 B8 Class 2 J Bolts | Stainless Steel ASTM A193 B8 Class 2 U Bolts | |
| Stainless Steel ASTM A193 B8 Class 2 Shoulder Bolts | Stainless Steel ASTM A193 B8 Class 2 Elevator Bolts | |
| Stainless Steel ASTM A193 B8 Class 2 Hanger Bolts | Stainless Steel ASTM A193 B8 Class 2 Allen Bolts | |
ANSI And/Or ASME Standards Bolts (Inch Series)
| Description | Standard | Measurement System |
|---|---|---|
| Square & Hex Head Bolts | ANSI/ASME B18.2.1 | Inch Series |
| Hex Head Bolts | ANSI/ASME B18.2.3.5M | Metric |
| Heavy Hex Bolts | ANSI/ASME B18.2.3.6M | Metric |
| Heavy Hex Structural Bolts | ANSI/ASME B18.2.3.7M | Metric |
| Square Head Bolts | ANSI/ASME B18.2.3.10M | Metric |
| Round Head Bolts | ANSI/ASME B18.5 | Inch Series |
| Round Head Short Square Neck Bolts | ANSI/ASME B18.5.2.1M | Metric |
| Round Head Square Neck Bolts | ANSI/ASME B18.5.2.2M | Metric |
| Round Head Square Neck Bolts With Large Head | ANSI/ASME B18.5.2.3M | Metric |
| Track Bolts | ANSI/ASME B18.10 | Inch Series |
| Forged Eye Bolts | ANSI/ASME B18.15 | Inch Series |
| Lifting Eye Bolts | ANSI/ASME B18.15M | Metric |
| Hex Head Bolts | DIN 931 | Metric |
| Heavy Hex Bolts | DIN 6914 | Metric |
| Countersunk Square Head Bolts With Short Neck | DIN 608 | Metric |
| Lifting Eye Bolts (Type A) | DIN 444A | Metric |
| Lifting Eye Bolts (Type B) | DIN 444B | Metric |
| Square Head Bolts With Collar | DIN 478 | Metric |
| Forged Lifting Eyes/Eye Bolts | DIN 580 | Metric |
| Carriage Bolts | DIN 603 | Metric |
| Flat Countersunk Nib Bolts | DIN 604 | Metric |
| Carriage Bolts | DIN 607 | Metric |
| U Bolts | DIN 3570 | Metric |
| Hex Flange Bolts | DIN 6921 | Metric |
| Plough Bolts with 2 Nibs | DIN 11014 | Metric |
| Hex Head Bolts with Shank | ISO 4014 | Metric |
| Hex Head Bolts with Nuts | ISO 4016 | Metric |
| Full Thread Hex Head Bolts | ISO 4017 | Metric |
| Hex Flange Bolts | ISO 4162 | Metric |
| Hex Flange Bolts | ISO 8100 | Metric |
| Hex Bolt With Flange | ISO 8102 | Metric |
| Hex Flange Bolts | ISO 15071 | Metric |
| Mushroom Head Square Neck Bolts | ISO 8677 | Metric |
| Fine Threaded Hex Head Bolts | ISO 8765 | Metric |
| Hex Head Bolts | IS 1363 Part 1 | Metric |
| Hex Head Bolts | IS 1363 Part 2 | Metric |
| Hex Head Bolts | IS 1364 Part 1 | Metric |
| Hex Head Bolts For Structural Joints | IS 6639 | Metric |
| Hex Head Transmission Tower Bolts | IS 12427 | Metric |
| Hexagon Flange Bolts | IS 15582 | Metric |
Property Class
| For Bolts & Screws | A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H |
| For Nuts | A2-70, A2-80, A4-70, A4-80, F594C, F594D, F594G, F594H, A2-035, A4-040 |
| For SHCS | F837B, F837C, F837E, F837 |
| For Threaded Rods | A2-70, A2-80, A4-70, A4-80, F593C, F593D, F593G, F593H, B8, B8M CL1 & CL2 |
SS ASTM A193 B8 Class 2 Bolts Dimensions
| **All measurements in millimeters** | ||||||||
|---|---|---|---|---|---|---|---|---|
| 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 |
SS ASTM A193 B8 Class 2 Bolts Torque Chart
| Torque Specifications | ||||||
|---|---|---|---|---|---|---|
| Bolt Size Inches or # | Threads Per Inch | Standard Dry Torque in Inch-Pounds | ||||
| ASTM A193 B8 Class 2 Stainless Steel | ||||||
| #2 | 56 | 2.5 | ||||
| 64 | 3.0 | |||||
| #3 | 48 | 3.9 | ||||
| 56 | 4.4 | |||||
| #4 | 40 | 5.2 | ||||
| 48 | 6.6 | |||||
| #5 | 40 | 7.7 | ||||
| 44 | 9.4 | |||||
| #6 | 32 | 9.6 | ||||
| 40 | 12.1 | |||||
| #8 | 32 | 19.8 | ||||
| 36 | 22.0 | |||||
| #10 | 24 | 22.8 | ||||
| 32 | 31.7 | |||||
| 1/4 | 20 | 75.2 | ||||
| 28 | 94.0 | |||||
| 5/16 | 18 | 132 | ||||
| 24 | 142 | |||||
| 3/8 | 16 | 236 | ||||
| 24 | 259 | |||||
| 7/16 | 14 | 376 | ||||
| 20 | 400 | |||||
| 1/2 | 13 | 517 | ||||
| 20 | 541 | |||||
| 9/16 | 12 | 682 | ||||
| 18 | 752 | |||||
| 5/8 | 11 | 1110 | ||||
| 18 | 1244 | |||||
| 3/4 | 10 | 1530 | ||||
| 16 | 1490 | |||||
| 7/8 | 9 | 2328 | ||||
| 14 | 2318 | |||||
| 1 | 8 | 3440 | ||||
| 14 | 3110 | |||||
| 1 1/8 | 7 | 413 | ||||
| 12 | 390 | |||||
| 1 1/4 | 7 | 523 | ||||
| 12 | 480 | |||||
| 1 1/2 | 6 | 888 | ||||
| 12 | 703 | |||||
Stainless Steel ASTM A193 B8 Class 2 Bolts Sizes
| Stainless Steel ASTM A193 B8 Class 2 Bolts size chart | Stainless Steel ASTM A193 B8 Class 2 Bolts size guide | Stainless Steel ASTM A193 B8 Class 2 Bolts dimensions |
|---|---|---|
| 3/8″-16 x 1″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 1/2″-13 x 1-1/2″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 1/4″-20 x 1″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
| 3/8″-16 x 1-1/4″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 3/8″-16 x 1-1/2″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 1/4″-20 x 3/4″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
| 1/2″-13 x 2″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 1/2″-13 x 2″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 1/2″-13 x 1-1/2″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
| 5/8″-11 x 2″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 1/4″-20 x 3/4″ Grade 18-8 Stainless Steel Stainless Steel ASTM A193 B8 Class 2 Bolts | 5/16″-18 x 1″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
| 3/8″-16 x 1″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 3/8″-16 x 1″ Grade 18-8 Stainless Steel Stainless Steel ASTM A193 B8 Class 2 Bolts | 3/8″-16 x 1-1/2″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
| 1/4″-20 x 1″ Grade 18-8 Stainless Steel Stainless Steel ASTM A193 B8 Class 2 Bolts | 5/8″-11 x 2″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 5/8″-11 x 2-1/2″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
| 3/8″-16 x 2″ Grade 5 Finish Stainless Steel ASTM A193 B8 Class 2 Bolts | 3/8″-16 x 1-1/4″ Grade 8 Yellow Finish Stainless Steel ASTM A193 B8 Class 2 Bolts |
ASTM A193 B8 Class 2 Stainless Steel Bolts Weight Chart
| MM THREADS AS PER IS 1363/67 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| APPROXIMATE WEIGHT IN KGS FOR 100 NOS | ||||||||||
| 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 | |||||||
ASTM A193 B8 Class 2 Stud Bolt Size Chart
| Class 150 Flanges ASME B8 Class 2.5 (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 B8 Class 2.5 | 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 | |
ASTM A193 B8 Class 2 Stud Bolt Torque Chart
| Flange Size |
B8 Class 2.5 Class 150 RF/ Ring Gaskets | B8 Class 2.5 Class 150 FF/ Full Face Gaskets | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Torque / Round (ft-lbs) | Stud Bolts Tighten Sequence | Torque / Round (ft-lbs) | Stud Bolts Tighten Sequence | |||||||
| 1st | 2nd | Final | Dwg/No. | Bolt Size | 1st | 2nd | Final | Dwg*/No. | Bolt Size | |
| 1/2″ | 10 | 20 | 30 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
| 3/4″ | 13 | 27 | 40 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
| 1″ | 15 | 30 | 50 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
| 1-1/4″ | 20 | 40 | 60 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
| 1-1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ | 20 | 40 | 60 | 4-bolt | 1/2″ |
| 2″ | 40 | 80 | 120 | 4-bolt | 5/8″ | 40 | 80 | 120 | 4-bolt | 5/8″ |
| 2-1/2″ | 40 | 80 | 120 | 4-bolt | 5/8″ | 40 | 80 | 120 | 4-bolt | 5/8″ |
| 3″ | 40 | 80 | 120 | 4-bolt | 5/8″ | 40 | 80 | 120 | 4-bolt | 5/8″ |
| 3-1/2″ | 40 | 80 | 120 | 8-bolt | 5/8″ | 40 | 80 | 120 | 8-bolt | 5/8″ |
| 4″ | 40 | 80 | 120 | 8-bolt | 5/8″ | 40 | 80 | 120 | 8-bolt | 5/8″ |
| 5″ | 60 | 120 | 200 | 8-bolt | 3/4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
| 6″ | 60 | 120 | 200 | 8-bolt | 3/4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
| 8″ | 60 | 120 | 200 | 8-bolt | 3/4″ | 60 | 120 | 200 | 8-bolt | 3/4″ |
| 10″ | 95 | 190 | 320 | 12-bolt | 7/8″ | 95 | 190 | 320 | 12-bolt | 7/8″ |
| 12″ | 95 | 190 | 320 | 12-bolt | 7/8″ | 95 | 190 | 320 | 12-bolt | 7/8″ |
| 14″ | 147 | 294 | 490 | 12-bolt | 1″ | 147 | 294 | 490 | 12-bolt | 1″ |
| 16″ | 147 | 294 | 490 | 16-bolt | 1″ | 147 | 294 | 490 | 16-bolt | 1″ |
| 18″ | 213 | 426 | 710 | 16-bolt | 1-1/8″ | 213 | 426 | 710 | 16-bolt | 1-1/8″ |
| 20″ | 213 | 426 | 710 | 20-bolt | 1-1/8″ | 213 | 426 | 710 | 20-bolt | 1-1/8″ |
| 24″ | 300 | 600 | 1,000 | 20-bolt | 1-1/4″ | 300 | 600 | 1,000 | 20-bolt | 1-1/4″ |
ASTM A193 B8 Class 2 Stud Bolts Dimension
| Diameter | Diameter in mm | Diameter in inch | Nut Sizes |
|---|---|---|---|
| M12 | 12 | 0.4724 | 19 |
| M10 | 10 | 0.3937 | 17 |
| M14 | 14 | 0.5512 | 22 |
| M18 | 18 | 0.7087 | 27 |
| M16 | 16 | 0.6299 | 24 |
| M20 | 20 | 0.7874 | 30 |
| M24 | 24 | 0.9449 | 36 |
| M22 | 22 | 0.8661 | 32 |
| M27 | 27 | 1.063 | 41 |
| M33 | 33 | 1.2992 | 50 |
| M30 | 30 | 1.1811 | 46 |
| M36 | 36 | 1.4173 | 55 |
| M42 | 42 | 1.6535 | 65 |
| M39 | 39 | 1.5354 | 60 |
| M45 | 45 | 1.7717 | 70 |
| M52 | 52 | 2.0472 | 80 |
| M48 | 48 | 1.8898 | 75 |
| M56 | 56 | 2.2047 | 85 |
| M64 | 64 | 2.5197 | 95 |
| M60 | 60 | 2.3622 | 90 |
| M68 | 68 | 2.6772 | 100 |
| M76 | 76 | 2.9921 | 110 |
| M72 | 72 | 2.8346 | 105 |
| M80 | 80 | 3.1496 | 115 |
| M90 | 90 | 3.5433 | 130 |
| M85 | 85 | 3.3464 | 120 |
| M100 | 100 | 3.937 | 145 |
| M160 | 160 | 6.2992 | 230 |
| M125 | 125 | 4.9212 | 180 |
| M110 | 110 | 4.3307 | 155 |
| M140 | 140 | 5.5118 | 200 |
Other Types of SS ASTM A193 B8 Class 2 Bolts
| Stainless Steel ASTM A193 B8 Class 2 Hex Cap Screw | ASTM A193 B8 Class 2 Shoulder Bolt |
| ASTM A193 B8 Class 2 Hanger Bolt | Stainless Steel ASTM A193 B8 Class 2 Socket Cap Screw |
| SS ASTM A193 B8 Class 2 Anchor Bolt | ASTM A193 B8 Class 2 Machine Bolt |
| ASTM A193 B8 Class 2 Draw Bolt | ASTM A193 B8 Class 2 Stainless Steel J Bolt |
| Stainless Steel ASTM A193 B8 Class 2 Countersunk Slotted Screw | ASTM A193 B8 Class 2 DIN 933 Bolts |
| ASTM A193 B8 Class 2 Hanger Bolt | SS ASTM A193 B8 Class 2 T Bolt |
| SS ASTM A193 B8 Class 2 Steel Counter sunk Bolt | Stainless Steel ASTM A193 B8 Class 2 Hex Bolt |
| ASTM A193 B8 Class 2 Eye Bolt | ASTM A193 B8 Class 2 SS T Bolt |
| Stainless Steel ASTM A193 B8 Class 2 Lag Bolt | SS ASTM A193 B8 Class 2 Step Bolt |
| ASTM A193 B8 Class 2 Allen Bolts | ASTM A193 B8 Class 2 Anchor Bolts |