Stud Bolt or Studs,sometimes called Full thread rods are externally threaded fasteners that typically look like and operate as threaded bars. They’re different from screws and bolts in the fact that they don’t usually have a head that requires tightening — just continuous threading that can be paired with nuts
Stud bolts are the bolting material or fastener used to tighten the flange joint connection according to ASME B16.5 Code
Stud Bolt Standards
ANSI/ASME B18.31.2
ANSI/ASME B16.5
DIN 975
| Carbon Steel | Stainless Steel | Duplex & Super Duplex |
| • ASTM A193 B7 | • ASTM A193 B8 CL1/CL2 | • ASTM A182 F51, S31803 |
| • ASTM A193 B7M | • ASTM A193 B8M CL1/CL2 | • ASTM A182 F53, S32750 |
| • ASTM A193 B16 | • ASTM A193 B8C CL1/CL2 | • ASTM A182 F55, S32760 |
| • ASTM A320 L7 | • ASTM A193 B8T CL1/CL2 | |
| • ASTM A320 L7M | • ASTM A320 B8 CL1/CL2 | |
| • ASTM A320 L43 | • ASTM A320 B8M CL1/CL2 | |
| • ASTM A325 | • ASTM A320 B8C CL1/CL2 | |
| • ASTM A320 B8T CL1/CL2 | ||
| • ASTM A453 660 | ||
| • ASTM A453 662A | ||
| • ASTM A453 665B |
| Nominal size or diameter | 1″ and smaller | 1 1/8″ and larger |
| INCH SERIES | UNIFIED COARSE THREAD SERIES | UNIFIED 8 THREAD SERIES |
| CLASS 2A ASME B1.1 | CLASS 2A ASME B1.1 | |
| Nominal size or diameter | 1″ and smaller | 1 1/8″ and larger |
| METRIC SERIES | METRIC COARSE THREAD SERIES | METRIC FINE AND COARSE PITCH THREADS |
| CLASS 6g ISO 68/ IS0 965 | CLASS 6g ISO 68/ ISO 965 |
Fastener Surface coatings
Blacken
zinc coated, hot dipped galvanized, cadmium coated,
PTFE coated, Zinc Plating +PTFE coating,TEFLON coated, XYLAN coated,
Colors: blue, green, red, silver, black, grey and zinc, etc.
API 20E BSL-2 ASTM A193 B7 stud bolts are high-strength alloy steel fasteners designed for critical oil & gas and pressure equipment applications. Manufactured with enhanced quality control and full traceability, these stud bolts ensure reliable performance in high-temperature, high-pressure flange connections.
API 20E BSL 2 A193 B7 STUD BOLT A194 2H Heavy Hex Nut Read More »
We manufacture and supply ASTM A193 Grade B7 stud bolts with advanced Zinc-Nickel plating and PTFE (polytetrafluoroethylene) coating, engineered for corrosive environments, high strength, and long-lasting performance in oil & gas, chemical, power generation, and offshore applications.
ASTM A193 B7 Stud Bolts with Zinc Nickel Plating and PTFE Coating Read More »
Fluorocarbon Coated Stud Bolt
Manufacturer | PTFE Coated Fasteners Supplier
ASTM A193: B7, B7M, B8, B8M, B16
ASTM A320: L7, L7M
Fluorocarbon coated stud bolt ASTM B7/2H nuts Read More »
Grade 660 Class A Stud Bolt ,also known as Grade 660 A Stud bolt,refers to a specific type Class A of grade 660 under ASTM A453 Standard,which is a high-temperature, high-strength fastener used in critical applications such as pressure vessels, valves, flanges, and heat exchangers—particularly in the petrochemical, power generation, and aerospace industries.
Size Range (Nominal):
Metric: M6 through M64
Imperial (inch): ¼″ – 4″ (¼″, 5⁄16″, 3⁄8″, 7⁄16″, ½″, 5⁄8″, ¾″, 7⁄8″, 1″, 1 1⁄8″, 1 ¼″, 1 ½″, 1 ¾″, 2″,2 1/2″,3″,3 1/2″)
Length Range:Typically 20 mm up to 1000 mm
ASTM A453 Grade 660 Class A stud bolts A453 Grade 660A Hex nuts Read More »
ASTM A453 Grade 660 round bars are with superior strength, heat resistance, and reliability in extreme environments.
Material Grade: ASTM A453 Grade 660 (Class A, B, C, D)
Standard: ASTM A453 / ASME SA453
Type: Round Bars
Size Range: 10 mm to 200 mm diameter (custom sizes available)
ASTM A453 Grade 660 Round bar Read More »
1.4980 is a precipitation-hardenable austenitic stainless steel, commonly known as Alloy A286. It offers an excellent combination of high strength and corrosion resistance, Like ASTM A453 grade 660 stud bolt ,it is often used in high-temperature applications such as aerospace and power generation.
Standards:
ASTM A453 Grade 660 and 1.4980 stud bolts
Thread forms: ASME B1.1 (UNC/UNF), ISO 261/965 for metric.
1.4980 X6NiCrTiMoVB25-15-2 Stud Bolt Hex Nuts Read More »
UNS N08810 Stud Bolts, also known as Incoloy 800H stud bolts, are high-performance fasteners engineered for applications requiring exceptional strength and resistance to high-temperature corrosion.
Available Sizes: M12 to M100; 1/2″ to 4″
Thread Configurations: Fully Threaded, Double Ended, Tap End, Reduced Shank
N08810 Stud Bolts Incoloy 800-800H-800HT Bolts Read More »
ASTM A479 904L Stud Bolts, crafted from high-alloy austenitic stainless steel, are engineered for applications demanding exceptional corrosion resistance and mechanical strength. These fasteners are particularly suited for aggressive environments such as chemical processing plants, marine structures, and offshore installations.
Sizes: Metric M12 to M100; Imperial size 1/2″ to 4″
Lengths: Up to 2500 mm
904L stud bolt 1.4539 N08904 full threaded Rod Read More »
ASTM B164 UNS N04400 Stud Bolts, commonly known as Monel 400 stud bolts, are high-performance fasteners crafted from a nickel-copper alloy renowned for its exceptional strength, corrosion resistance, and durability in demanding environments
Available Sizes: M12 – M100 (1/2″ to 4″), custom sizes upon request
Length Range: 30 mm to 1000 mm
ASTM B164 UNS N04400 Stud Bolt DIN 2.4360 Monel 400 HEX Bolts Read More »
Zeron 100 Stud Bolts Manufacturer | Super Duplex Stainless Steel UNS S32760 Fasteners
Material Grade: UNS S32760 (Zeron 100)
Standards: ASTM A479, ASTM A276, ASTM A182 F55,ASTM A1082
Equivalent Designations: WNR 1.4501, SAF 32760
Sizes:
Metric: M6 to M100
Imperial: ¼″ to 4″
Zeron 100 stud Bolt UNS S32760 Stud Bolts A182 F55 Read More »