Call: +91-98 77 77 86 77
Email: info@unionsteel.co.in
Call: +91-98 77 77 86 77
Email: info@unionsteel.co.in
Stainless Steel, Duplex, Super Duplex, & Specialty Alloy Fasteners.
Union Steel Industries is a trusted Fasteners stockist and supplier in Pune, backed by the Navpad Metal Group’s 20+ years of industry heritage. Based in MIDC Bhosari, Pune, we supply Stainless Steel Fasteners and specialty alloy Fasteners for engineering, fabrication, structural, piping, pressure equipment, chemical, pharmaceutical, oil & gas, petrochemical, marine, power generation and industrial applications.
Union Steel Industries supplies Stainless Steel Fasteners in commonly required grades, sizes, thread configurations, finishes and standards.
Fastener Types
Hex Bolts | Heavy Hex Bolts | Stud Bolts | Threaded Rods | Nuts | Washers | Socket Head Cap Screws | Allen Screws | Machine Screws | U-Bolts | Eye Bolts | Anchor Bolts | Custom Fasteners
Common Stainless Steel Grades
SS 304 | SS 304L | SS 316 | SS 316L | SS 321 | SS 347 | SS 410 | SS 420 | SS 430 | SS 431 | SS 17-4 PH
Contact our technical sales team today for an instant commercial quote.
WhatsApp: +91 9877778677 | Email: sales@unionsteel.co.in
Stainless Steel Circles and Rings supplied according to applicable material standards, dimensions, finish and customer requirements.
ISO 9001:2015 certified supplier offering MTC, PMI testing and inspection support as required.
Bolts
Hex Bolts | Heavy Hex Bolts | Structural Bolts | Flange Bolts | Carriage Bolts | Eye Bolts | U-Bolts | Anchor Bolts
Screws
Socket Head Cap Screws | Allen Screws | Machine Screws | Self-Tapping Screws | Self-Drilling Screws | Countersunk Screws | Pan Head Screws | Set Screws
Studs & Threaded Products
Stud Bolts | Double End Studs | Full Thread Studs | Threaded Rods | Threaded Bars
Nuts
Hex Nuts | Heavy Hex Nuts | Lock Nuts | Jam Nuts | Dome Nuts | Wing Nuts | Nyloc Nuts | Flange Nuts
Washers
Plain Washers | Flat Washers | Spring Washers | Lock Washers | Square Washers | Fender Washers | Custom Washers
STAINLESS STEEL FASTENER STANDARDS
Fasteners can be supplied according to applicable:
ASTM | ASME | ISO | DIN | EN | JIS | BS | IS
Common Standards
ASTM F593 | ASTM F594 | ASTM A193 / ASME SA193 | ASTM A194 / ASME SA194 | ASTM F467 | ASTM F468 | ASTM A1082 / A1082M | ISO 4014 | ISO 4017 | ISO 4032 | ISO 7089 | DIN 931 | DIN 933 | DIN 934 | DIN 125 | DIN 912
The applicable standard depends on fastener type, material, grade, dimensions, thread and application.
FASTENER SIZES & THREADS
Fasteners can be supplied in metric and inch sizes, subject to type, grade, standard and availability.
Common Metric Sizes
M3 | M4 | M5 | M6 | M8 | M10 | M12 | M16 | M20 | M24 | M30 | M36 | M42 | M48 | M52 | M60 | M64
Common Inch Sizes
1/8″ | 1/4″ | 3/8″ | 1/2″ | 5/8″ | 3/4″ | 1″ | 1-1/4″ | 1-1/2″ | 2″ and larger
Thread Types
Metric Coarse | Metric Fine | UNC | UNF | UNEF | BSW | BSF
Fastener requirements can be specified as:
Fastener Type + Material + Grade + Diameter + Length + Thread + Standard + Quantity
DUPLEX & SUPER DUPLEX FASTENERS
Duplex Stainless Steel
Duplex 2205 | UNS S31803 | UNS S32205
Used for applications requiring high mechanical strength and enhanced corrosion resistance.
Applications: Oil & Gas | Chemical Processing | Petrochemical | Marine | Desalination | Water Treatment | Pressure Equipment
Super Duplex Stainless Steel
Super Duplex 2507 | UNS S32750 | UNS S32760
Used for demanding chloride-containing and aggressive environments.
Applications: Offshore | Oil & Gas | Marine | Desalination | Chemical Processing | Petrochemical | Water Treatment
SPECIALTY ALLOY FASTENERS
Aluminium Fasteners
2024 | 5052 | 6061 | 6063 | 7075
Copper Fasteners
C10100 | C10200 | C11000
Brass Fasteners
C26000 | C36000 | C46400
Monel Fasteners
Monel 400 | K500
Inconel Fasteners
Inconel 600 | 601 | 625 | 718
Titanium Fasteners
Grade 1 | Grade 2 | Grade 5
Hastelloy Fasteners
B2 | B3 | C276 | C22
Other Materials
Gunmetal | Phosphor Bronze
These materials can be supplied according to fastener type, grade, size, thread, quantity, specification and availability.
| Material | Common Grades |
|---|---|
| Stainless Steel | 304, 304L, 316, 316L, 321, 347, 410, 420, 430, 431, 17-4 PH |
| Duplex | 2205, S31803, S32205 |
| Super Duplex | 2507, S32750, S32760 |
| Aluminium | 2024, 5052, 6061, 6063, 7075 |
| Copper | C10100, C10200, C11000 |
| Brass | C26000, C36000, C46400 |
| Monel | 400, K500 |
| Inconel | 600, 601, 625, 718 |
| Titanium | Grade 1, Grade 2, Grade 5 |
| Hastelloy | B2, B3, C276, C22 |
| Other | Gunmetal, Phosphor Bronze |
Availability depends on grade, fastener type, size, thread, quantity, specification and current stock position.
FASTENER TESTING, MTC & INSPECTION
Depending on customer and project requirements, Fasteners can be supplied with:
EN 10204 3.1 MTC | EN 10204 3.2 | Chemical Analysis | Mechanical Testing | Hardness Testing | Proof Load Testing | Tensile Testing | Dimensional Inspection | Thread Inspection | Heat Number | Material Traceability | PMI | NABL Laboratory Testing | Third-Party Inspection
Third-Party Inspection
TÜV | SGS | Bureau Veritas | DNV
Fasteners are used across:
Oil & Gas | Petrochemical | Chemical Processing | Pharmaceutical | Power Generation | Automotive | Aerospace | Marine | Shipbuilding | Construction | Food Processing | Water Treatment | Desalination | Engineering | Fabrication
Located in MIDC Bhosari, Pune, Union Steel Industries supplies Stainless Steel and Specialty Alloy Fasteners to major industrial markets across India. We serve customers across Pune and PCMC industrial areas, including MIDC Bhosari, Chakan, Talawade, Talegaon, Ranjangaon, Pirangut and Hadapsar.
Pune & PCMC
MIDC Bhosari | Chakan | Talawade | Talegaon | Ranjangaon | Pirangut | Hadapsar
Major Markets
Pune | Mumbai | Navi Mumbai | Thane | Nashik | Ahmedabad | Vadodara | Surat | Jamnagar | Rajkot | Vapi | Delhi NCR | Bengaluru | Hyderabad | Chennai
We support manufacturers, OEMs, EPC contractors, fabricators, engineering companies, traders and industrial buyers.
GLOBAL EXPORT SUPPLY
WHY UNION STEEL
When your project depends on the quality of its raw materials, you need more than a supplier. You need a dependable industrial metal partner.
Union Steel Industries combines industry experience, quality-focused sourcing and responsive customer service to deliver reliable metal solutions.
