Custom Bolts Manufacturer, Supplier & Exporter in India
Adloy Fasteners is a manufacturer and global exporter of customised bolts from Mumbai, India. We produce more than 20 types of bolts, from hex bolts and stud bolts to anchor bolts and hollow Allen bolts, in stainless steel, carbon steel, alloy steel, copper alloys, nickel alloys, super alloys and other non-ferrous metals. Our bolts are made to ASME, ASTM, DIN, ISO, BS and IS standards, or to your own drawing, in the grades, sizes, threads and finishes your project needs. Reliable quality, competitive pricing and on-time export delivery make us a trusted partner for buyers worldwide.
Types of Bolts We Manufacture
Hex Bolts
Six-sided head bolts, partially or fully threaded, for general structural and machine assembly.
Heavy Hex Bolts
Larger, thicker heads for high-load structural joints and steel connections.
Hex Flange Bolts
Integral flange acts as a washer, spreading load and speeding assembly.
Hollow Hex Bolts
Drilled through the shank for wire, fluid, cable or sensor passage.
Hollow Allen
Hollow socket head bolts for fluid lines, lubrication and sensor mounting.
Machine Bolts
General-purpose bolts used with nuts in machinery and equipment.
Socket Head Bolts
High-strength cylindrical head bolts driven by a hex key.
Eye Bolts
Looped-head bolts for lifting, rigging and anchoring points.
Lag Bolts
Heavy wood-screw style bolts for timber and masonry anchoring.
J Bolts
J-shaped bolts for concrete anchoring and hooking onto structures.
U Bolts
U-shaped bolts for clamping pipes, tubes and round sections.
Shoulder Bolts
Precision ground shoulder for pivots, axles and rotating assemblies.
Elevator Bolts
Wide flat head bolts for conveyor belts and elevator buckets.
Hanger Bolts
Double-ended bolts with wood thread on one end and machine thread on the other.
Carriage Bolts
Domed head with square neck that locks into wood or metal.
Allen Bolts
Internal hex drive bolts for compact, flush assemblies.
Anchor Bolts
Foundation bolts for fixing structures and machinery to concrete.
Countersunk Bolts
Flat conical head sits flush with the surface.
Stud Bolts
Threaded both ends, used for flanges, valves and pressure vessels.
Square Head Bolts
Square head for strong wrench grip in rugged and traditional uses.
Bolts by Material
Choose the right material for strength, corrosion resistance and temperature. Each material has its own page with grades and specifications.
Alloy Steel Bolts
ASTM A193 B7, B16, 4140, 4340, Grade 10.9 and 12.9
Copper Alloy Bolts
Brass, bronze, silicon bronze, aluminium bronze, phosphor bronze
Super Alloy Bolts
Inconel 718, A286, Waspaloy, Nimonic, Rene
Non Ferrous Metal & Alloy Bolts
Aluminium, titanium Grade 2 and Grade 5, brass, zinc
Nickel Alloy Bolts
Monel 400, Inconel 625, Hastelloy C276, Incoloy 825, Nickel 200
Carbon Steel Bolts
Class 4.6, 8.8, 10.9, SAE Grade 2, 5, 8, ASTM A307
Stainless Steel Bolts
304, 316, 316L, 321, 410, 17-4PH, duplex 2205
| Material | Common Grades |
|---|---|
| Alloy Steel Bolts | ASTM A193 B7, B16, 4140, 4340, Grade 10.9 and 12.9 |
| Copper Alloy Bolts | Brass, bronze, silicon bronze, aluminium bronze, phosphor bronze |
| Super Alloy Bolts | Inconel 718, A286, Waspaloy, Nimonic, Rene |
| Non Ferrous Metal & Alloy Bolts | Aluminium, titanium Grade 2 and Grade 5, brass, zinc |
| Nickel Alloy Bolts | Monel 400, Inconel 625, Hastelloy C276, Incoloy 825, Nickel 200 |
| Carbon Steel Bolts | Class 4.6, 8.8, 10.9, SAE Grade 2, 5, 8, ASTM A307 |
| Stainless Steel Bolts | 304, 316, 316L, 321, 410, 17-4PH, duplex 2205 |
Bolts Specifications
| Product | Bolts (20+ types, custom designs) |
|---|---|
| Materials | Alloy Steel, Copper Alloys, Super Alloys, Non Ferrous Metal & Alloy, Nickel Alloy, Carbon Steel, Stainless Steel |
| Standards | ASME/ANSI B18, ASTM, DIN, ISO, BS, IS |
| Thread | Metric (coarse and fine), UNC, UNF, BSW, BSF |
| Strength Classes | 4.6 to 12.9, SAE Grade 2, 5, 8, ASTM A193 B7, A320 L7, A325, A490 |
| Finishes | Plain, Zinc Plated, Hot-Dip Galvanized, Black Oxide, Phosphate, PTFE, Passivated, Polished |
| Certificates | EN 10204 3.1 on request |
Applications of Bolts
- Construction and structural steel
- Oil, gas, refinery and petrochemical plants
- Power generation and transmission
- Marine and offshore
- Aerospace and automotive
- Chemical, pharma and food processing
- Railways, mining and heavy machinery
Why Choose Adloy Fasteners?
- Manufacturer with full custom bolt capability
- Wide material range from carbon steel to nickel and super alloys
- Test certificates and inspection reports on request
- Export-grade packing and timely worldwide shipping
- Competitive pricing for bulk and repeat orders