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.
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 »
SA193M B16 Stud bolt Manufacturer
ASTM A193 Grade B16 is a high-strength chromium-molybdenum-vanadium (Cr-Mo-V) alloy steel ,Stud bolt made of B16 grade is widely used for high-temperature and high-pressure applications
ASTM A193/A193M and ASME SA193/SA193M; B16
• Thread Requirements: ASME B1.1, 2A
– UNC for all stud diameters 1” and smaller
– UN8 for all stud diameters greater than 1”
ASTM A193 GRADE B16 Stud bolt SA193M B16 Stud bolt Read More »
ASTM A193 B7M is a modified, lower hardness version of B7 used primarily in sour gas (H₂S) environments to prevent hydrogen embrittlement. the stud bolt of B7M grade commonly used in oil & gas, petrochemical, and refinery applications
STUD BOLT +2 HEAVY NUTS, A193 GR. B7M – A194 GR. 2HM, HOT DIP GALVANIZED ACC. TO ASTM A153 (TO FLANGE 1.1/2″)
ASME B1.1 (UNC <= 1" & 8 UN =>1 1/8) ASME 18.2.2/1
STUD BOLT A193 GR. B7M WITH HEAVY NUTS A194 GR. 2HM HOT DIP GALVANIZED ASTM A153 Read More »
ASTM B150 is a standard material specification for rod, bar, and shapes for Copper Alloys including Nickel Aluminium Bronze Grade UNS C63000, having excellent corrosion resistance and is an ideal choice for valve and pump components, marine hardware and fasteners.
C63000 Stud Bolt Specifications
Thread Type: UNC, UNF, Metric (ISO)
Thread Standard: ASME B1.1 (UNC/UNF), ASME B1.13M (Metric)
Bolt Dimensions: ASME B18.2.1 / B18.31.2
Nut Compatibility: ASTM B150 C63000
ASTM B150 C63000 Stud Bolt Aluminium Bronze Fasteners Read More »
Polytetrafluoroethylene (PTFE) coating, commonly known as Teflon®, is a high-performance fluoropolymer coating renowned for its exceptional chemical stability, thermal resistance, and non-stick properties.
We regularly supply Teflon Coated Bolt and nuts ASTM A-193 and B7 Studs Teflon Blue.
Teflon Coating for stud bolt/PTFE Coating Read More »
Xylan or fluoropolymer Coating is a common coating method for the stud bolt,hex nuts,and other fasteners which required high anti -corrosion ,anti-rust in critical enviorement.The coating quality is very important for the stud bolt performance.
You would find the manufacturing and documentation requirements for fasteners of nominal size M12 (1/2”) and larger being coated with Xylan® and requiring a certified material test report of EN 10204 3.1
How to make quality PTFE Xylan Coated stud bolt? Read More »
Xylar 2 is an inorganic ceramic-metallic coating which was originally designed to provide the aerospace and marine industries with a product that would protect components from galvanic corrosion, high temperature, oxidization, salt laden atmospheres, chemicals and abrasives.
Xylar 2 +xylar 101 is a popular coating for stud bolt ,fasteners
Xylar 2 Coating /Aluminum-filled ceramic-metallic coating for stud bolt Read More »