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, TEFLON coated, XYLAN coated
Colors: blue, green, red, silver, black, grey and zinc, etc.
Xylan 1070 Coated ASTM A320 L7M Stud bolt with ASTM A194 gr 7M Heavy Hex Nuts
Standard: ASTM A320
Size Range: 1/4″ to 4″ (custom sizes available)
Thread Types: UNC / UNF / Metric
Heat Treatment: Quenched and tempered
Xylan 1070 Coated ASTM A320 L7M Stud bolt with ASTM A194 gr 7M Heavy Hex Nuts Read More »
ASME B18.31.2 – Continuous Thread Stud, Double-End Stud, and Flange Bolting Stud (Stud Bolt) (Inch Series)
This standard covers the dimensional and material requirements for continuous-thread and double-end threaded studs, used primarily for bolting flanged connections, valves, pressure vessels, and other industrial applications
ASME B18.31.2 Continuous Thread Stud Bolts Read More »
Cadmium Coated Stud Bolts ASTM A193 B7 Manufacturer
What Is Cadmium Coating?
Cadmium plating is a sacrificial, metallic coating applied by electroplating or mechanical means to carbon steel or alloy steel bolts
Cadmium Coated Stud Bolts ASTM A193 B7/2H Nuts Read More »
Grade B8M stud refers to a stainless steel stud bolt made in accordance with the ASTM A193 or ASTM A320 specification, specifically using Type 316 austenitic stainless steel.
what is the main difference between those 2 grades?You can find below comparion chart for A193 B8M and A320 B8M.
Differences Between ASTM A193 B8M & ASTM A320 B8M Read More »
ASTM A193 B6 Stud bolt Manufacturer
ASTM A193 Grade B6 refers to a martensitic class of stainless steel, AISI 410. which is Intended to make the stud bolt used in general purposes.
Standard Dimensions: ASME B18.2.1 / ASME B18.31.2
Threading: UNC (Coarse), UNF (Fine), or Metric per ASME B1.1 / B1.13M
Size: ¼ to 4″ [6-100 mm]
Length: Available in standard and custom cut lengths
ASTM A193 B6 Stud bolt AISI 410 with A194 gr.6 Hex nuts Read More »
Inconel 718 Round bar Manufacturer ,Alloy 718 (UNS N07718, W Nr 2.4668) is an austenitic nickel-based superalloy. Alloy 718 exhibits excellent high yield tensile and creep-rupture properties at temperatures up to 1300ºF and oxidation resistance to 1800ºF. Diameter: 6 mm – 300 mm (1/4″ to 12″)
Length: Standard 3m / 6m (Custom lengths available)
Finish: Black, Bright, Polished,
Inconel 718 N07718 Stud bolt and hex nuts Read More »
Stud Bolt is widely used for the flange connection.while flanges have various size and working classes according ASME B16.5.
Different size of the flanges would request different bolt size and length,so it is important for an engineer to know,how to calculate the stud bolt length.
Stud Bolts length and tolerance Read More »
The surface coating on a fastener is as important as the underlying fastener material. Fastener threads are manufactured in a cutting or forming machining process, and the surface coatings add an essential layer of protection to the fastener shank and threads
Choosing the right surface treatment for stud bolts depends on factors such as corrosion resistance, temperature, and environmental exposure. Below are the most common surface treatment options.(HDG,PTFE XYlan,ZINC Plating)
Introduction of HDG,PTFE XYlan,ZINC Plating,Surface treatment for fasteners Read More »
Sermagard 1105 + Sermagard 1280 Coated Stud bolt Manufacturer
SermaGard 1105 is a ceramic-metallic sprayed basecoat that at 1 mil of thickness or more affords 3000-4000 hours of ASTM B117 salt spray resistance, with an appropriate topcoat.
SermaGard 1280 is a fluorocarbon topcoat, which when applied to SermaGard 1105 basecoat gives superior corrosion resistance and UV protection. The termpature rating is good to 400 F (204 C) continuously and 450 F (232 C) intermittently.
We can supply Sermagard 1105 + 1280 Coated ASTM A193 B7 / B7M / B16 Stud Bolts/Sermagard 1105 + 1280 Coated ASTM A320 L7 / L7M Stud Bolts
Sermagard 1105 + Sermagard 1280 Coated Stud bolt and Hex nuts Read More »
ASTM A453 Grade 660 is a high-strength, corrosion-resistant, austenitic stainless steel alloy designed for high-temperature and high-pressure applications. It is commonly used in power plants, petrochemical industries, aerospace, and offshore applications due to its superior strength and oxidation resistance at elevated temperatures.
Thread Type: UNC (Coarse), UNF (Fine), Metric (ISO)
Size:3/8″ to 4″ in imperial and upto M100 in metric sizes
Thread Standard: ASME B1.1 (Inch), ASME B1.13M (Metric)
ASTM A453 grade 660 A/B/C/D Stud Bolt,Hex Nuts Read More »