Fastening Solutions: 24/7 – Always Ready to Power Your Industrial Needs
Fastening Solutions: 24/7 – Always Ready to Power Your Industrial Needs
Fastening Solutions: 24/7 – Always Ready to Power Your Industrial Needs
Fastening Solutions: 24/7 – Always Ready to Power Your Industrial Needs
Delta Fitt Inc. is a trusted Stud Bolts Manufacturer in India with over 34 years of experience in the fastener industry. We specialize in manufacturing and supplying high-quality industrial stud bolts that meet international standards and deliver reliable performance in demanding environments. We use our skills, advanced manufacturing technology, and high-quality materials to offer fastening solutions. These solutions ensure safety, strength, and long-lasting durability.
As a top Stud Bolts Supplier in India, we serve many industries. These include petrochemical, oil and gas, power generation, chemical processing, and construction. Our stud bolts are made to work under high pressure, extreme heat, and constant vibration. They are suitable for both local and global industrial uses. With a strong focus on quality control, competitive pricing, and timely delivery, we have also established ourselves as a reliable exporter to international markets.
We manufacture stud bolts in various materials and grades to meet specific operational requirements. We offer a variety of fastening solutions. This includes Hex bolts, B7 stud bolts, B8 stud bolts, and B8M stud bolts, Stud Screw, Stud Nuts, and Flange bolt. All of these are made with strict quality checks. This ensures they have the right size, strength, and resistance to corrosion. Custom sizes, threading, and surface finishes are available to match project-specific needs.
Stud bolts are headless, externally threaded fasteners with threads on both ends or along their full length. They mainly use them in flange connections, pipeline systems, and heavy-duty industrial assemblies. These areas need secure fastening and strong clamping force. One end of the stud bolt goes into a tapped hole. The other end is secured with a nut. This setup helps distribute the load evenly and improves the strength of the joint.
Many industries widely use these high-strength fasteners in applications involving high pressure, temperature fluctuations, and vibration. Stud bolts play a critical role in oil & gas pipelines, petrochemical plants, power stations, and other industrial systems where safety and reliability are non-negotiable. Their design also supports easier maintenance and replacement, helping reduce downtime while maintaining consistent performance.
A proper understanding of stainless steel stud bolt specifications is essential for selecting the right fastener. These specifications cover material, size, and strength requirements, which can vary depending on the application.
| Common Name | Standard / Grade | Typical Material | Typical Applications | Key Properties |
|---|---|---|---|---|
| Carbon Steel Stud Bolt | ASTM A307 | Carbon Steel | General flange connections | Economical, good strength |
| Alloy Steel Stud Bolt | ASTM A193 B7 | Cr–Mo Alloy Steel | High temp & pressure service | High tensile strength, heat resistant |
| Low Temp Stud Bolt | ASTM A320 L7 / L7M | Alloy Steel | Low-temperature service | Excellent toughness at low temps |
| Stainless Steel Stud Bolt | ASTM A193 B8 / B8M | SS 304 / SS 316 | Chemical, food & marine | Excellent corrosion resistance |
| Duplex Stud Bolt | ASTM A193 B8M Cl 2 / 2205 | Duplex SS | Offshore & chemical | High strength, corrosion resistant |
| Super Duplex Stud Bolt | ASTM A193 B8M Cl 2 / 2507 | Super Duplex SS | Seawater & aggressive | Superior pitting & crevice resistance |
| High Temperature Stud Bolt | ASTM A193 B16 | Alloy Steel | Power plants, refineries | Excellent creep resistance |
ASTM A193 B7, B8, and B8M stud bolts follow identical UNC/8UN thread dimensions across grades, with B7 providing maximum strength for high-pressure oil/gas flanges and B8/B8M offering corrosion resistance for marine/chemical use with Monel shims.
| Nominal Size | Threads/inch | Root Dia (min) | Nut Width | Common Lengths | Standards |
|---|---|---|---|---|---|
| 1/4" | 20 UNC | 0.188" | 7/16" | 1/2" - 3" | ASME B16.5 / B18.2.1 |
| 3/8" | 16 UNC | 0.287" | 9/16" | 1" - 5" | ASTM A193 Gr B7 / B8 / B8M |
| 1/2" | 13 UNC | 0.384" | 3/4" | 1-1/4" - 6" | A194 2H / 8 / 8M Nuts |
| 5/8" | 11 UNC | 0.470" | 15/16" | 1-1/2" - 8" | Class 150 - 2500 Flanges |
| 3/4" | 10 UNC | 0.570" | 1-1/8" | 2" - 10" | B16.47 Large Dia |
| 1" | 8 UN | 0.750" | 1-1/2" | 2-1/2" - 12" | Full Thread / Tap End |
Delta Fitt Inc stands for quality and excellence. We are the top Stud Bolt Manufacturer in India. We can supply you with all types of Stud Bolt products with quick delivery and the best possible price.
We also supply complete fastening systems including stud bolts and nuts, stud and bolt assemblies, and precision stud screw solutions.
Complete stud bolt material specifications for ASTM A193/A320 grades used across pressure vessels, pipelines, and refineries. Leading Stud Bolt Suppliers and Manufacturers in India stock B7, B8, and B8M stud bolts, ranging from chromium-molybdenum (Cr-Mo) alloys to stainless steel.
| Grade | Material Type | Typical Chemistry / Key Alloy | Common Size Range (Inch / Metric) |
|---|---|---|---|
| B7 | Cr-Mo Alloy Steel | AISI 4140 / 4142 | 1/4" – 7" / M6 – M180 |
| B16 | Cr-Mo-V Alloy Steel | AISI 616 (Cr-Mo-V) | 1/2" – 4" / M12 – M100 |
| B8 (Class 1) | Austenitic SS | 304 / 304L | 1/2" – 4" / M12 – M100 |
| B8M (Class 1) | Austenitic SS | 316 / 316L | 1/2" – 4" / M12 – M100 |
| B8 Class 2 | Strain-Hardened SS | 304 | 1/2" – 1-1/2" / M12 – M36 |
| L7 (A320) | Low-Temp Alloy | 4130 / 4140 | 1/2" – 2-1/2" / M12 – M64 |
| B6 (Martensitic) | SS | 410 | 1/2" – 4" / M12 – M100 |
The chemical composition of stud bolts may vary slightly depending on the intended application. Stud bolts are typically manufactured from high-quality alloy steel and other carefully selected materials, ensuring they are strong, durable, and corrosion-resistant.
| Grade | C (Carbon) | Mn (Manganese) | Cr (Chromium) | Mo (Molybdenum) | Ni (Nickel) |
|---|---|---|---|---|---|
| B7 | 0.37–0.49 | 0.65–1.10 | 0.75–1.20 | 0.15–0.25 | — |
| B16 | 0.36–0.47 | 0.45–0.70 | 0.80–1.15 | 0.50–0.65 | — |
| B8 (304) | 0.08 max | 2.00 max | 18.0–20.0 | — | 8.0–11.0 |
| B8M (316) | 0.08 max | 2.00 max | 16.0–18.0 | 2.00–3.00 | 10.0–14.0 |
| L7 | 0.38–0.48 | 0.75–1.00 | 0.80–1.10 | 0.15–0.25 | — |
Great addition to your mechanical properties table—these are ASTM A193 bolt specifications essential for material selection in stainless steel and alloy procurement.
The strength of stud bolts is important. They are used in tough industries. These industries include chemical, oil and gas, and paper.
Key properties include tensile strength, hardness, and toughness. These properties help stud bolts withstand high pressure, mechanical stress, and temperature changes. These features also improve resistance to corrosion and wear. This makes stud bolts reliable and long-lasting in tough conditions.
| Grade | Tensile Strength (ksi) | Yield Strength (ksi) | Elongation (% in 2") | Hardness (HBW max) |
|---|---|---|---|---|
| B7 | 125 | 105 | 16 | 321 |
| B16 | 125 | 105 | 18 | 321 |
| B8 (Class 1) | 75 | 30 | 30 | 223 |
| B8M (Class 1) | 75 | 30 | 30 | 223 |
These are standard mechanical properties for ASTM A193 bolts commonly used in high-pressure piping and industrial applications. Perfect reference for your procurement specs!
Delta Fitt Inc. manufactures stud bolts that many industries use. These bolts are important for high strength, reliability, and secure fastening. These fasteners can handle high pressure, heat, and heavy loads. This makes them good for tough industrial uses.
Our stud bolts ensure leak-proof, durable, and long-lasting connections, even in harsh operating environments.
Stud bolts fall under HSN Chapter 7318 (iron/steel threaded fasteners) for GST compliance in India. All ASTM A193 grades use these codes based on material.
| Stud Bolt Grade | HSN Code | Description | GST Rate |
|---|---|---|---|
| B7 (Alloy Steel) | 73181500 | Iron/Steel bolts & studs (threaded) | 18% |
| B8 (SS 304) | 73181900 | Non-iron/steel threaded articles | 18% |
| B8M (SS 316) | 73181900 | Stainless steel studs/bolts | 18% |
As a top Stud Bolts Supplier in India, we make and supply strong, precision-engineered stud bolts. Our products meet international quality standards. Our stud bolts are widely used in oil & gas, petrochemical, construction, power, and heavy engineering industries. We have a strong distribution network. We serve clients in major cities and industrial areas in India. We ensure consistent quality, timely delivery, and reliable performance for demanding applications.
| City | Project Details |
|---|---|
| Rajkot, Gujarat | Stud Bolt Supplied To Oil & Gas Industry |
| Ahmedabad, Gujarat | Stud Bolt Supplier |
| Delhi, New Delhi | Stud Bolt Manufacturer |
| Chennai, Kolkata, Pune | Stud Bolt Supplier |
Below is the table highlighting the major industrial locations across India where we supply high-quality stud bolts, stud bolts and nuts, stud screws, stud fasteners, and stud and bolt assemblies. With a strong distribution network and ready stock availability, Delta Fitt Inc. ensures timely delivery, competitive stud bolt prices, and reliable bulk supply to customers nationwide.
Delta Fitt Inc. is a recognized stud bolts exporter, supplying high-quality stud bolts to multiple countries worldwide. Our products are manufactured in compliance with international standards and are widely used in oil & gas, petrochemical, power, construction, and heavy engineering industries. With strong export capabilities, secure packaging, and timely global delivery, we ensure reliable stud bolt solutions for international clients.
Below is the table outlining the countries we serve globally with our high-quality Stud Bolts, Stud Bolts and Nuts, Stud Screws, Stud Fasteners, and Stud and Bolt fastening solutions. As a reliable stud bolt exporter, Delta Fitt Inc. ensures secure export packaging, international quality compliance, competitive pricing, and timely worldwide delivery to meet diverse industrial requirements.
Head Office
Plot No. 3, Neo Ornate Tower, 1st Parsiwada Lane Corner, ND Road, Mumbai - 400004
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Plot No 1, 69-A, Kalekar Building, 1st Bhandari Street, Mumbai - 400004, Maharashtra, India
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