A193 B7 STUDS
Parmar Steel manufactures A193 B7 studs, renowned for their robustness and reliability in industrial applications. These studs are crafted from high-quality alloy steel, ensuring exceptional strength and durability, making them ideal for high-pressure and high-temperature environments. Parmar Steel A193 B7 studs are precision-engineered to meet Astm Standard Fasteners, guaranteeing consistent performance under demanding conditions. They are widely used in oil and gas, petrochemical, and construction industries for their ability to withstand extreme stress and corrosion. With a variety of sizes and configurations available, Parmar Steel caters to diverse project requirements, providing solutions that ensure safety, efficiency, and long-term operational integrity.
| Standard | DIN, ASTM, BS and all International Standards |
| Size | M3 - M56 | 3/6" to 2" | Custom Sizes |
| Type | Studs, Threaded Studs. |
| Standards | Designation |
| Thread Requirements of Stud Bolts | UNC & UNF, ASME B1.1, Class 2A (Fastenal will inspect and accept parts with a 1A no-go gauge) |
| Manufacturing Process | Cold Heading, Wire Drawing, Heat Treatment, Insert tapping, Inspection, Surface Plating, Packing |
| Delivery time | custom product will according to special requirement, Regular product is about 7-15 days |
| Coatings | PTFE |
| Head | Square, Hex, Hex flange, Round, T-head, Flat & Triangular etc |
| Neck type | Square, Hex, Oval, Triangular & Knurled etc |
| Dimensions | ASME B18.3, B18.2.1 |
| Melt Origin | South America/East Europe/Japan/Korea |
| Product Origin | Made in India |
| Threads Configuration | B1.13M 6h Metric Coarse Threads and ASME B1.1 2A/3A Inch Unified Threads |
| 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 |
304 SS STUD BOLTS DIMENSION CHART
| STUD BOLT LENGTH (in inches) | 1/2 | 5/8 | 3/4 | 7/8 | 1 | 1 1/8 | 1 1/4 | 1.3/8 | 1 1/2 | 1.5/8 | 1.3/4 | 1 7/8 |
| 2.1/2 | 10.8 | |||||||||||
| 2.3/4 | 11.6 | 19.8 | ||||||||||
| 3.1/4 | 12.4 | 21 | 32.4 | |||||||||
| 3.1/2 | 13.2 | 22.2 | 34.3 | 50 | ||||||||
| 4 | 14 | 23.4 | 36.2 | 52.6 | 71.8 | |||||||
| 4.1/2 | 14.8 | 24.6 | 38.1 | 55.2 | 75.2 | 102 | ||||||
| 4.3/4 | 15.6 | 25.8 | 40 | 57.8 | 78.6 | 106 | 137 | |||||
| 5 | 16.4 | 27 | 41.9 | 60.4 | 82 | 111 | 142 | 179 | ||||
| 5.1/2 | 17.2 | 28.2 | 43.8 | 63 | 85.4 | 115 | 147 | 186 | 234 | |||
| 6 | 18 | 29.4 | 45.7 | 65.6 | 88.8 | 119 | 153 | 193 | 242 | 289 | ||
| 6.1/4 | 18.8 | 30.6 | 47.6 | 68.2 | 92.2 | 123 | 158 | 200 | 250 | 298 | 263 | |
| 6.1/2 | 19.6 | 32.3 | 49.5 | 70.8 | 95.6 | 128 | 164 | 206 | 258 | 308 | 374 | 437 |
| 7 | 20.4 | 33.5 | 50.8 | 73.4 | 99 | 132 | 169 | 213 | 266 | 317 | 385 | 449 |
| 7.1/2 | 21.2 | 34.8 | 52.7 | 75.5 | 103 | 136 | 174 | 220 | 275 | 326 | 396 | 462 |
| 8 | 22 | 36.1 | 54.5 | 78 | 106 | 141 | 180 | 226 | 283 | 336 | 407 | 475 |
| 8.1/4 | 37.3 | 56.3 | 80.5 | 108 | 145 | 185 | 233 | 291 | 345 | 418 | 488 | |
| 8.3/4 | 38.6 | 58.1 | 83.1 | 112 | 149 | 191 | 240 | 299 | 354 | 429 | 500 | |
| 9 | 39.8 | 60 | 85.6 | 115 | 153 | 196 | 246 | 307 | 364 | 440 | 513 | |
| 9.1/2 | 41.1 | 61.8 | 88.2 | 118 | 158 | 201 | 253 | 316 | 373 | 451 | 526 | |
| 10 | 63.7 | 90.7 | 122 | 162 | 206 | 260 | 324 | 382 | 463 | 538 | ||
| 10/1.4 | 93.3 | 125 | 166 | 212 | 267 | 332 | 391 | 474 | 551 | |||
| 1.0.1/2 | 128 | 171 | 217 | 273 | 340 | 401 | 485 | 564 | ||||
| 11 | 132 | 175 | 223 | 279 | 345 | 410 | 496 | 576 | ||||
| 11.1/2 | 135 | 179 | 228 | 285 | 350 | 419 | 507 | 589 | ||||
| 12 | 138 | 184 | 233 | 292 | 358 | 429 | 518 | 602 |
| STUD BOLT LENGTH (in mm) | M10 | M12 | M14 | M16 | M18 | M20 | M22 | M24 | M27 | M30 | M33 | M36 | M39 |
| 60 | 5,6 | 8,1 | 12 | 15,6 | |||||||||
| 70 | 6,1 | 8,9 | 13 | 16,9 | 23,7 | ||||||||
| 80 | 6,6 | 9,6 | 14 | 18,2 | 25,4 | 32,5 | |||||||
| 90 | 7,1 | 10,3 | 15 | 19,6 | 27,1 | 34,5 | 45,5 | ||||||
| 100 | 7,6 | 11 | 16 | 21 | 28,8 | 36,7 | 47,2 | 54,2 | |||||
| 110 | 8,1 | 11,7 | 17 | 22,2 | 30,4 | 38,7 | 48,3 | 58,2 | 80 | ||||
| 120 | 8,6 | 12,4 | 18 | 23,6 | 32,1 | 40,7 | 50,9 | 60,2 | 84,7 | 107 | |||
| 130 | 9,1 | 13,2 | 19 | 24,9 | 33,7 | 42,8 | 53,4 | 63,2 | 88,6 | 111 | 141 | ||
| 140 | 9,6 | 14,2 | 20 | 26,2 | 35,4 | 44,9 | 55,9 | 66,2 | 92,4 | 116 | 147 | 185 | |
| 150 | 10,1 | 14,9 | 20,8 | 27,5 | 36,9 | 46,9 | 58,5 | 69,2 | 96,3 | 121 | 153 | 192 | 237 |
| 160 | 10,6 | 15,6 | 21,8 | 29,1 | 38,6 | 49 | 61 | 72,2 | 100,1 | 126 | 159 | 199 | 245 |
| 170 | 16,4 | 22,8 | 30,4 | 40,2 | 51,1 | 63,5 | 75,2 | 104 | 130 | 165 | 206 | 253 | |
| 180 | 23,8 | 31,8 | 41,9 | 52,3 | 66,1 | 78,1 | 108 | 135 | 171 | 213 | 261 | ||
| 190 | 33,1 | 43,5 | 54,4 | 68,4 | 81,1 | 112 | 140 | 176 | 219 | 269 | |||
| 200 | 34,5 | 45,2 | 56,2 | 71 | 84 | 116 | 144 | 182 | 226 | 278 | |||
| 210 | 35,8 | 46,8 | 58,5 | 73,5 | 88,4 | 120 | 149 | 188 | 233 | 286 | |||
| 220 | 37,1 | 48,4 | 60,6 | 76,1 | 91,4 | 124 | 154 | 194 | 240 | 294 | |||
| 230 | 38,5 | 50,1 | 62,6 | 78,6 | 94,4 | 127 | 159 | 201 | 247 | 302 | |||
| 240 | 39,8 | 51,7 | 64,7 | 81,2 | 97,4 | 130,9 | 164 | 208 | 253 | 310 | |||
| 250 | 41,1 | 53,4 | 66,8 | 83,7 | 100,4 | 134,8 | 172 | 214 | 260 | 319 | |||
| 260 | 55 | 68,8 | 86,3 | 103,4 | 138,6 | 177 | 220 | 267 | 327 | ||||
| 270 | 56,6 | 70,9 | 88,8 | 106,4 | 142,5 | 182 | 224 | 274 | 335 | ||||
| 280 | 58,3 | 73 | 91,4 | 109,4 | 146,3 | 187 | 230 | 281 | 343 | ||||
| 290 | 75 | 93,9 | 112,4 | 150,1 | 192 | 236 | 291 | 360 | |||||
| 300 | 77,1 | 96,5 | 115,4 | 154 | 196 | 241 | 298 | 368 | |||||
| 320 | 101,6 | 121,3 | 161,7 | 206 | 253 | 312 | 380 | ||||||
| 340 | 127,3 | 169,4 | 215 | 265 | 326 | 395 | |||||||
| 360 | 133,3 | 177,1 | 224 | 276 | 340 | 411 | |||||||
| 380 | 184,8 | 234 | 288 | 353 | 428 | ||||||||
| 400 | 192,5 | 243 | 299 | 367 | 444 | ||||||||
| 420 | 252 | 311 | 381 | 460 | |||||||||
| 440 | 262 | 322 | 394 | 477 | |||||||||
| 460 | 271 | 334 | 408 | 493 | |||||||||
| 480 | 281 | 345 | 422 | 509 | |||||||||
| 500 | 290 | 357 | 436 | 526 |
SIZES OF A2-70 BOLTS/ STUD BOLTS
| 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 | |
DOUBLE END THREADED STUD BOLTS TORQUE CHART
| Flange Size |
B16.5 Class 150 RF/ Ring Gaskets | B16.5 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″ |
High Tensile Studs Material & Grades
Stainless Steel Studs :
AISI 302, 304, 304L,316, 316L, 310, 317, 317L, 321, 347, 410, 420,904L etc.
Duplex & Super Duplex Steel Studs :
ASTM / ASME A815 UNS No. S31803, UNS No. S 32205, UNS No. S 31254, UNS No. S 31550, UNS No. S 32750, and UNS No. S 32760
Carbon Steel Studs :
ASTM A307, A193
Alloy Steel Studs :
ASTM / ASME A/SA 193 / 194 B 6, B 7/ B 7M, B 16, 2, 2HM, 2H, GR 6, B 7, B 7M
Nickel Alloy Studs :
ASTM / ASME SB 160 / 164 / 425 / 166 / 446 / 574 / 472 UNS 2200 (NICKEL 200) / UNS 2201 (NICKEL 201), UNS 4400 (MONEL 400), UNS 8825 (INCONEL 825), UNS 6600 (INCONEL 600) / UNS 6601 (INCONEL 601), UNS 6625 (INCONEL 625), UNS 10276 (HASTELLOY C 276), UNS 8020 (ALLOY 20 / 20 CB 3)
We Shine For Premier Quality Product
The company has over two decade long record of servicing customers in India as well as all over the world. The company attaches significant emphasis on ensuring adherence to quality standards at all levels.
The basic thrust of the quality philosophy is summed up in the company's Quality Policy which serves as the bench mark of all functions executed by the company. Strict quality assurance system is being followed in all our departments and Total Quality Management is applied to streamline and all the procedures and practices in operation to achieve high standard of efficiency.
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"Reliable, durable products; perfect for construction, never disappoints with quality or service."
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Parmar Steel
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