Custom Alloy Fasteners Manufacturer, Supplier & Exporter in India
Adloy Fasteners is a manufacturer and global exporter of custom fasteners from Mumbai, India. We make custom bolts, nuts, clevis pins, studs, washers and screws to your drawing, sample or specification in alloy steel, copper alloys, super alloys, non-ferrous metals, high performance nickel alloys (Inconel, Monel, Hastelloy, Incoloy, Nimonic), carbon steel and stainless steel. These materials resist extreme heat, seawater, acids and sour service where standard fasteners fail. Whether you need a single prototype or a repeat production run, we work from your drawing and supply with material test certificates, inspection reports and export-grade packing. Customers in oil and gas, aerospace, marine, power, chemical and process industries rely on us worldwide.
Custom Fasteners We Manufacture
Custom Bolts
Hex, flange, eye, U, J, anchor and special-head bolts made to your drawing in any length, thread and grade.
Custom Nuts
Special-size, special-thread, weld, lock and flange nuts matched to your bolts and studs.
Custom Clevis Pins
Precision clevis pins with machined heads, grooves and cross-holes for linkages, actuators and lifting gear.
Custom Studs
Full-thread, double-end, tap-end and reduced-shank studs to ASTM, ASME or your own drawing.
Custom Washers
Flat, spring, tab, tooth-lock and special-profile washers cut or machined to size.
Custom Screws
Socket, set, cap, shoulder and special-drive screws made from your drawing or sample.
Custom Fasteners by Material
Every product above is available in the following material families. Select a material to see its grades and specifications.
| Material | Types |
|---|---|
| Alloy Steel | Chromium, Chrome Vanadium, Molybdenum, Chromium Molybdenum and more |
| Copper Alloys | Chromium Copper, Copper Nickel, Nickel Silver, Beryllium Copper and more |
| Super Alloys | Stellite, Waspaloy, Maraging, R Alloys and more |
| Non Ferrous Metals & Alloys | Titanium, Titanium Alloys, Copper, Tantalum and more |
| High Performance Nickel Alloys | Inconel, Monel, Hastelloy, Incoloy and more |
| Carbon Steel | Low Carbon Steel, Medium Carbon Steel, High Carbon Steel |
| Stainless Steel | Austenitic Stainless Steel, Ferritic Stainless Steel, Martensitic Stainless Steel, Duplex Stainless Steel and more |
Custom Alloy Steel Fasteners
Alloy steel custom fasteners combine high tensile strength, toughness and fatigue resistance. Through-hardening and tempering lets us supply anything from Class 10.9 and 12.9 bolts to ASTM A193 B7 and B16 studs for high-pressure, high-temperature and high-load service. View all alloy steel fasteners.
Chromium
AISI 5130, 5140, 5160
Hardenable chromium steel with good wear resistance and strength for general high-load fasteners.
Chrome Vanadium
AISI 6150, 50CrV4
Fatigue-resistant steel with fine grain and high toughness, used for springs, tools and shock-loaded fasteners.
Molybdenum
C-Mo steels such as 15Mo3
Carbon-molybdenum steel with better strength at elevated temperature than plain carbon steel.
Chromium Molybdenum
AISI 4130, 4140, 4145, 42CrMo4; ASTM A193 B7, B7M; A320 L7
The most widely used alloy steel for bolting in oil, gas, power and pressure equipment.
Nickel Molybdenum
AISI 4615, 4620, 4640
Tough, case-hardenable steel with good core strength for gears, pins and heavy fasteners.
Nickel Chromium
AISI 31xx and 33xx series
High toughness and hardenability for highly stressed, impact-loaded parts.
Silicon Manganese Steel
AISI 9260, 60Si2Mn, 55Si7
High-elasticity steel with excellent fatigue strength, used for springs, spring washers and clips.
Nickel Chromium Molybdenum
AISI 4340, 8620, 8740, 34CrNiMo6
Very high strength and toughness through thick sections, used for aerospace, heavy equipment and critical bolting.
Custom Copper Alloys Fasteners
Copper alloy custom fasteners resist corrosion, conduct electricity and heat, and do not spark. We make them in brass, bronzes, copper-nickel and high-strength beryllium copper for marine, electrical, chemical and hazardous-area use. View all copper alloys fasteners.
Chromium Copper
C18200, C18150 (CuCrZr)
High electrical and thermal conductivity with good strength, used for welding and electrical parts.
Copper Nickel
C70600 (90/10), C71500 (70/30)
Outstanding seawater and biofouling resistance for marine and desalination fasteners.
Nickel Silver
C75200, C77000
Copper-nickel-zinc alloy (contains no silver) with a silvery colour and good corrosion resistance.
Beryllium Copper
C17200, C17500
The strongest copper alloy, non-sparking and conductive, used in tools, springs and hazardous areas.
Brass
C26000, C36000, C46400 (naval brass)
Economical, easily machined and corrosion resistant, widely used in electrical and plumbing fasteners.
Aluminium Bronze
C61400, C95400
High strength and excellent resistance to seawater, wear and cavitation.
Nickel Aluminium Bronze
C63000, C95800
Premier marine bronze with high strength and corrosion resistance for ship and offshore fasteners.
Silicon Aluminium Bronze
C64200
Good strength, wear resistance and machinability for bearings, bushes and fasteners.
Phosphor Bronze
C51000, C52100, C54400
Good spring properties, fatigue strength and wear resistance for springs, washers and bushings.
Silicon Bronze
C65100, C65500
Popular marine fastener alloy with good strength, corrosion resistance and weldability.
Manganese Bronze
C86300, C67500
High-strength bronze for heavy-load, low-speed parts and marine hardware.
Tin Bronze
C90300, C90500
Wear-resistant, pressure-tight bronze for bearings, valves and pump fasteners.
Custom Super Alloys Fasteners
Super alloy custom fasteners keep their strength where other metals soften or corrode: very high temperature, severe wear and extreme stress. They are used in aerospace, gas turbines, power and the most demanding process plants. View all super alloys fasteners.
Stellite
Stellite 6, 12, 21
Cobalt-chromium alloys with outstanding wear, galling and heat resistance.
Waspaloy
UNS N07001
Age-hardened nickel alloy with excellent strength at high temperature, used in aerospace and turbines.
Maraging
18Ni 250, 300, 350
Ultra-high-strength steel hardened by ageing, with good toughness and dimensional stability.
R Alloys
Made to your grade and specification
Super alloy fasteners in R-series grades, manufactured to your drawing and material specification.
S Alloys
Made to your grade and specification
Super alloy fasteners in S-series grades, manufactured to your drawing and material specification.
I Alloys
Made to your grade and specification
Super alloy fasteners in I-series grades, manufactured to your drawing and material specification.
N Alloys
Made to your grade and specification
Super alloy fasteners in N-series grades, manufactured to your drawing and material specification.
Custom Non Ferrous Metals & Alloys Fasteners
Non ferrous custom fasteners offer light weight, corrosion resistance, conductivity or chemical inertness. We make them in titanium, tantalum, zirconium, aluminium, copper and nickel for aerospace, chemical, medical, electrical and marine uses. View all non ferrous metals & alloys fasteners.
Titanium
Grade 1, Grade 2 (UNS R50400)
Commercially pure titanium with excellent corrosion resistance and good formability.
Titanium Alloys
Grade 5 Ti-6Al-4V (R56400), Grade 7, Grade 9
High strength-to-weight ratio, non-magnetic, used in aerospace, marine, medical and motorsport.
Copper
C11000, C10200
High electrical and thermal conductivity for electrical connections and earthing hardware.
Tantalum
Ta, Ta-2.5W
Exceptional resistance to acids and chemicals, used in aggressive chemical process equipment.
Zirconium
Zr 702 (R60702), Zr 705 (R60705)
Excellent resistance to hot acids and alkalis, and low neutron absorption for nuclear use.
Aluminium
6061-T6, 7075-T6, 2024
Lightweight and corrosion resistant, used in aerospace, transport and electrical equipment.
Nickel
Nickel 200 (N02200), Nickel 201 (N02201)
Commercially pure nickel with excellent resistance to caustic alkalis and good heat resistance.
Custom High Performance Nickel Alloys Fasteners
High performance nickel alloy custom fasteners resist severe corrosion, high temperature and aggressive chemicals. Inconel, Monel, Hastelloy, Incoloy and Nimonic fasteners are specified in oil and gas, aerospace, power, chemical and marine applications where stainless steel is not enough. View all high performance nickel alloys fasteners.
Inconel
Inconel 600, 601, 625, 718, X-750 (UNS N06600, N06601, N06625, N07718, N07750)
Outstanding strength and oxidation resistance at high temperature, with good resistance to chlorides and acids.
Monel
Monel 400 (N04400), Monel K-500 (N05500)
Excellent resistance to seawater, hydrofluoric acid and alkalis; K-500 is age-hardenable for higher strength.
Hastelloy
Hastelloy C276 (N10276), C22 (N06022), B3, X
Exceptional resistance to severe acids, chlorides and pitting for chemical process equipment.
Incoloy
Incoloy 800, 800H, 825, 926
Good resistance to oxidation, carburisation and acids, used in heat exchangers and process plants.
Nimonic
Nimonic 80A, 90, 105
Creep-resistant nickel-chromium alloys for gas turbines and high-temperature service.
Molybdenum
Pure Mo, TZM
Refractory metal with very high melting point, used for fasteners in vacuum and high-temperature furnaces.
Custom Carbon Steel Fasteners
Carbon steel custom fasteners are the most economical choice for general engineering. We supply low, medium and high carbon steel in strength classes from 4.6 to 10.9. View all carbon steel fasteners.
| Type | Common Grades | Key Properties |
|---|---|---|
| Low Carbon Steel | Class 4.6, 4.8; ASTM A307 | Soft, ductile and economical for general-purpose fasteners. |
| Medium Carbon Steel | Class 8.8, 10.9; SAE Grade 5 | Balanced strength and toughness, heat treatable for structural and machinery fasteners. |
| High Carbon Steel | Spring steel, hardened parts | Hardest and most wear-resistant carbon steel for springs, pins and hardened parts. |
Custom Stainless Steel Fasteners
Stainless steel custom fasteners resist rust and corrosion across a wide range of environments. We supply austenitic, ferritic, martensitic, duplex, super duplex and precipitation-hardening grades. View all stainless steel fasteners.
| Type | Common Grades | Key Properties |
|---|---|---|
| Austenitic Stainless Steel | 304, 316, 316L, 321, 310 | The most widely used stainless family, non-magnetic with excellent corrosion resistance. |
| Ferritic Stainless Steel | 430, 409, 446 | Magnetic, good resistance to stress corrosion cracking and oxidation at lower cost. |
| Martensitic Stainless Steel | 410, 416, 420, 431, 440C | Hardenable stainless steel with high strength and wear resistance. |
| Duplex Stainless Steel | 2205 (S31803, S32205), 2304 | Roughly twice the strength of austenitic grades with good chloride resistance. |
| Super Duplex Stainless Steel | 2507 (S32750), Zeron 100 (S32760) | Very high strength and exceptional chloride resistance for offshore and subsea. |
| Precipitation-Hardening Stainless Steel | 17-4PH (S17400), 15-5PH, 17-7PH | High strength with good corrosion resistance, hardened by ageing heat treatment. |
How We Make Custom Fasteners
- Send your drawing or sample. PDF, DWG, DXF or STEP drawings, or a physical sample, with quantity, material and any standard or specification.
- Engineering review. We check dimensions, tolerances, thread fit and material suitability, and suggest changes where it saves cost or improves performance.
- Material selection and sourcing. Bar, forging or wire in the required alloy, with mill test certificates traced to the heat number.
- Manufacturing. Forming, machining, threading and finishing according to the part and material.
- Heat treatment and finishing. Solution treatment, ageing or stress relief where required, followed by cleaning, passivation or coating.
- Inspection and testing. Dimensional inspection, thread gauging, hardness and positive material identification, with test reports as agreed.
- Export packing and delivery. Labelled, corrosion-protected packing in cartons, pallets or wooden boxes, shipped worldwide.
What to Send With Your Enquiry
- Drawing (PDF, DWG, DXF or STEP) or a physical sample
- Material and grade, for example Inconel 718 or AISI 4140
- Quantity, including prototype and repeat volumes
- Standard or specification, tolerances and thread class
- Surface finish, coating and heat treatment requirements
- Certificates and testing required, for example EN 10204 3.1, PMI, NACE
- Destination country or port
Custom Fasteners Specifications
| Product | Custom Bolts, Nuts, Clevis Pins, Studs, Washers, Screws |
|---|---|
| Materials | Alloy Steel, Copper Alloys, Super Alloys, Non Ferrous Metals & Alloys, High Performance Nickel Alloys, Carbon Steel, Stainless Steel |
| Standards | ASTM A193, A320, A354, F468, F467, B637, B164, B446, B348, ASME B18, DIN, ISO, BS, IS or customer drawing |
| Thread | Metric coarse and fine, UNC, UNF, UNJ, BSW, BSF, special threads to drawing |
| Size Range | Made to drawing: small precision parts to large-diameter heavy fasteners |
| Finishes | Plain, Passivated, Polished, PTFE, Silver Plated, Nickel Plated, Zinc Plated, Anodised (titanium), Black Oxide |
| Heat Treatment | Quenched and tempered, solution annealed, age hardened, stress relieved as required |
| Certificates | EN 10204 3.1, inspection reports, PMI on request |
Applications of Custom Alloy Fasteners
- Oil, gas, subsea and offshore (sour service and seawater)
- Aerospace, gas turbines and defence
- Power generation, boilers and nuclear
- Marine, shipbuilding and desalination
- Chemical, petrochemical and pharma plants
- Medical equipment and motorsport (titanium)
- Furnaces, heat treatment and high-temperature equipment
Why Choose Adloy Fasteners?
- Made to your drawing, from one-off prototypes to production runs
- Seven material families, from carbon steel to super alloys
- Heat number traceability with test certificates on request
- Engineering review of your drawing before manufacture
- Export-grade packing and timely worldwide shipping