Hastelloy Fasteners
Manufacturer
India
All Hastelloy Fasteners Manufacturer India | Akbar Fasteners Pvt. Ltd. Mumbai We Manufacture
Hastelloy Fastener Product Range
Every product available in all Hastelloy grades — C276, C22, C4, B3, B2, X, G-30 — with full ASTM material certification and dimensional compliance.
Hex Bolts
Full thread (DIN 933) and partial thread (DIN 931) hex bolts. M6–M100. Heavy hex available. Matching Hastelloy hex nuts supplied as certified set.
Stud Bolts
ASME B16.5 fully threaded stud bolts for flanged pressure joints. Equal and unequal end. Class 150 to 2500. Lengths up to 3,000mm. PMI verified.
Hex Nuts
Standard hex (DIN 934) and heavy hex (ASME B18.2.2) nuts. Coupling nuts (DIN 6334) for rod joints. Manufactured same heat as bolts for galvanic compatibility.
Washers
Plain flat (DIN 125), spring (DIN 127), and large OD washers. M5–M100. Same ASTM-certified Hastelloy material as bolts. Full MTC supplied per lot.
Socket Cap Screws
ISO 4762 socket head cap screws for instrumentation and enclosed equipment. M3–M36. Button head, flat head, and set screw variants available.
Threaded Rods
Fully threaded rods (DIN 975/976) from ASTM-certified bar. M6–M100, up to 3,000mm. Metric and inch thread. Right-hand and left-hand configurations.
Hastelloy Fastener Full Grade & Size Matrix
All Hastelloy grades manufactured from ASTM-certified mill stock. Mechanical properties verified by NABL-accredited laboratory.
| Grade | UNS No. | ASTM Std | Product Forms | Size Range | UTS | Primary Service |
|---|---|---|---|---|---|---|
| HASTELLOY C-SERIES — Corrosion Resistant | ||||||
| Hastelloy C276 | N10276 | B574 · B564 | Bolts · Studs · Nuts · Washers | M6–M100 | ≥790 MPa | Oxidising & reducing acids, Cl⁻ |
| Hastelloy C22 | N06022 | B574 · B564 | Bolts · Studs · Nuts · Washers | M6–M100 | ≥690 MPa | Superior pitting/crevice vs C276 |
| Hastelloy C4 | N06455 | B574 | Bolts · Studs · Nuts | M6–M80 | ≥690 MPa | Thermal stability, Cl⁻ environments |
| HASTELLOY B-SERIES — Reducing Acid Resistant | ||||||
| Hastelloy B3 | N10675 | B335 · B333 | Bolts · Studs · Nuts · Washers · Screws | M6–M100 | ≥760 MPa | HCl, H₂SO₄, all reducing acids |
| Hastelloy B2 | N10665 | B335 · B333 | Bolts · Studs · Nuts | M6–M80 | ≥760 MPa | HCl service (B3 preferred) |
| HASTELLOY SPECIALITY GRADES | ||||||
| Hastelloy X | N06002 | B435 | Bolts · Studs · Nuts | M6–M64 | ≥655 MPa | High-temp oxidising gas, up to 1200°C |
| Hastelloy G-30 | N06030 | B582 | Bolts · Studs · Nuts · Washers | M6–M80 | ≥690 MPa | Phosphoric acid, fertiliser plants |
India’s Trusted Hastelloy Fastener Source
Akbar Fasteners Pvt. Ltd. is not a trading house — we are a direct manufacturer with in-house CNC machining, thread rolling, heat treatment, and surface finishing at our Mumbai facility. Raw materials are purchased from certified mills, PMI-verified on receipt, and tracked through every stage of production with a documented job card system.
We hold ISO 9001:2015 certification covering the complete manufacturing scope — from supplier qualification and incoming inspection through final dimensional/mechanical testing and dispatch. Every shipment includes a Certificate of Conformance, Mill Test Certificate, and PMI report as standard.
Our 25+ years of Hastelloy fastener manufacture means we stock raw material in the most common grades — C276, C22, B3 — for rapid turnaround, and we maintain relationships with certified mills for specialty grades on short lead times.
Direct Manufacturer — No Middlemen
In-house forging, CNC machining, thread rolling, heat treatment. Competitive pricing and full process control.
100% PMI on Exotic Alloys
XRF Positive Material Identification on every Hastelloy lot. Report confirms composition vs mill certificate before production begins.
NABL-Accredited Test Reports
Tensile, hardness, impact testing at NABL labs. Reports issued per ASTM A370. Available for every shipment.
Export to 50+ Countries
ISPM-15 fumigated export packing. MTC, COC, country-of-origin, TPI co-ordination. Air, sea, and express options.
Custom Sizes — Any Grade
Non-standard dimensions, special head forms, exotic thread profiles manufactured to drawing. No minimum quantity.
ISO 9001:2015 Certified
Third-party certified QMS covering complete manufacturing scope. Annual surveillance audit. Certificate on request.
Standards We Manufacture & Test To
Complete documentation package with every order — traceable from mill heat to dispatch.
Industries That Specify Hastelloy Fasteners
From Mumbai to the North Sea — Akbar Fasteners Hastelloy products are proven in the world’s most demanding environments.
Chemical Processing
reactor vessel joints
Oil & Gas
subsea & sour service
Power Generation
superheater assemblies
Petrochemical
crude oil processing
Pharmaceutical
reaction equipment
Marine / Offshore
desalination plants
Semiconductor
wet etch chambers
Fertiliser Plants
urea reactor bolts
Complete Documentation Package
Heat & Lot Traceable
Conformance
per Alloy Lot
Tensile · Hardness
TÜV · BV · Lloyds
Hastelloy Fasteners Shipped Worldwide
India’s Hastelloy fastener manufacturer with a proven global export record. ISPM-15 fumigated packaging, full export documentation, and DDP delivery available.
Export Enquiry →Get Hastelloy Fasteners
from the Source.
Grade · product · size · quantity · destination. Akbar Fasteners Pvt. Ltd. responds within 24 hours with pricing, lead time, and full documentation list.