Custom Manufacturing
Custom &Specialty Fasteners
Non-standard, custom-engineered and specialty fasteners manufactured to your exact drawing, sample or specification — in any material, any size, any grade. From one-off prototypes to large production runs, we deliver precision-made fasteners with full ISO quality documentation.
To Drawing / Sample
ISO 9001:2015
Any Material Grade
M2 to M200+
Prototype to Production
7–21 Day Lead Time
Custom Capabilities
What We Custom Manufacture
Every type of non-standard and specialty fastener — to your drawing, sample or written specification in any material and any quantity.
Most Requested
Custom Bolts & Studs
Non-standard length · Special head · Extra-large diameter · Any grade · To drawing
High Performance
Exotic Alloy Fasteners
Inconel · Hastelloy · Monel · Titanium · Duplex · Any size & type
OEM Special
Special Head & Drive Types
Tamper-proof · Security · Spanner · Tri-wing · Custom head profiles
Corrosion Protection
Specialty Coatings
Teflon · Geomet · Dacromet · Nickel · Electroless Ni · PTFE dry film
Pre-Assembled Kits
Flange Bolt Kits & Assemblies
Stud bolt + 2 nuts + 2 washers · Pre-packed per flange · Tagged & labelled
Precision Machined
Precision Turned Parts
Custom threaded components · Turned parts · Special nuts · To 3D drawing
Heavy Structural
Jumbo & Foundation Bolts
M80 – M200+ · Extra-long foundation bolts · Plate washers · L & J hooks
Lightweight
Titanium Fasteners
Grade 2 & Grade 5 · M4–M48 · Hex, socket cap, special heads
EPC Projects
Complete Project BOM Supply
Full fastener BOM · One PO · One supplier · Tagged & packed per isometric
How It Works
Custom Manufacturing Process
From your drawing or sample to finished, certified parts — a clear, efficient 4-step process with full traceability at every stage.
01
Submit Your Requirement
Send us your drawing (PDF/DWG/DXF), sample part, written specification or Bill of Materials. Include material grade, quantity, delivery and any special requirements.
02
Engineering Review & Quote
Our technical team reviews your requirement, confirms material availability, proposes the best manufacturing method and sends a detailed quote with lead time within 24 hours.
03
Manufacturing & Inspection
Parts manufactured in our ISO 9001:2015 certified facility using certified raw material. First article inspection (FAI) carried out before full production run. Third-party inspection available.
04
Delivery with Documentation
Parts packed, labelled and shipped with full MTR, dimensional inspection report, heat treatment certificate and any other project-specific documentation required.
What We Can Do
Custom Manufacturing Capabilities
Our engineering and manufacturing capabilities cover the widest range of custom fastener requirements — from standard modifications to truly unique components.
SZ
Size Customisation
Non-Standard Sizes
Any diameter, any length. From M2 micro fasteners to M200+ jumbo bolts. Special pitches, fine threads, left-hand threads, UNC/UNF inch threads — to your exact specification.
MT
Exotic & Specialty
Any Material Grade
We source and machine any material grade — standard carbon and stainless steels, alloy steels, exotic nickel alloys, titanium, copper alloys and engineering polymers.
HD
Head & Drive
Special Head & Drive
Any head profile machined to your drawing — flanged, domed, shoulder, hex, square, round. Any drive type including tamper-proof security drives for anti-vandal applications.
CT
Advanced Protection
Specialty Coatings
Advanced surface treatments for extreme corrosion, chemical resistance or specific performance requirements — beyond standard zinc plating and HDG options.
KT
Pre-Assembled
Bolt Kits & Assemblies
Pre-packed flange bolt kits, tagged to your isometric or equipment number — stud bolts + heavy hex nuts + washers assembled and packed per flange connection for installation efficiency.
BM
Project Supply
Full BOM Supply
Send us your entire fastener BOM and we supply everything under one PO — standard and custom fasteners, flanges, fittings and hardware from a single traceable source.
Material Reference
Exotic & Specialty Materials
Quick reference for specialty materials we regularly machine for custom fastener orders.
| Material | UNS / Grade | Density (g/cc) | Max Temp | Key Property | Typical Application |
|---|---|---|---|---|---|
| Inconel 625 | UNS N06625 | 8.44 | 982°C | High temp + corrosion | Offshore, gas turbine, chemical reactor |
| Inconel 718 | UNS N07718 | 8.19 | 704°C | High strength + creep | Aerospace, gas turbine, nuclear |
| Hastelloy C-276 | UNS N10276 | 8.89 | 760°C | Universal corrosion | Chemical processing, FGD systems |
| Monel 400 | UNS N04400 | 8.80 | 480°C | Seawater resistance | Marine, offshore, acid service |
| Duplex 2205 | UNS S31803 | 7.80 | 315°C | Strength + Cl⁻ resist | Subsea, desalination, pulp & paper |
| Super Duplex 2507 | UNS S32750 | 7.81 | 300°C | Very high Cl⁻ resist | Subsea, seawater systems, FPSOs |
| Titanium Grade 2 | UNS R50400 | 4.51 | 315°C | Lightweight + corr. | Marine, chemical, medical, aerospace |
| Titanium Grade 5 | UNS R56400 | 4.43 | 315°C | High strength + light | Aerospace, automotive, implants |
| Alloy Steel B7 | ASTM A193 B7 | 7.85 | 450°C | High tensile strength | Flange bolting, pressure vessels |
| Alloy Steel F91 | ASTM A182 F91 | 7.83 | 593°C | Very high temp creep | Power plant, steam lines, HRSG |
| Brass C360 | UNS C36000 | 8.50 | 120°C | Machinability + cond. | Electrical, plumbing, instrumentation |
| PEEK | Polymer | 1.32 | 260°C | Non-conductive + chem. | Medical, semiconductor, aerospace |
Frequently Asked
Custom Fastener FAQ
Answers to the most common questions about our custom manufacturing capabilities, lead times and documentation.
Drawing
What formats do you accept for custom drawings?
CAD, PDF, sketches and physical samples all accepted
Accepted Formats
We accept drawings and specifications in any format — there is no requirement for a formal engineering drawing. Send us what you have and our team will review and confirm the specification before quoting.
What To Include
Thread form and pitch · Head type and dimensions · Key dimensions and tolerances · Material grade · Surface finish / coating · Quantity and delivery requirement
Accepted Formats
Lead Time
What is the lead time for custom fasteners?
Typically 7–21 working days depending on material and complexity
Typical Lead Times
Lead time depends on material availability, quantity, complexity and whether the material requires heat treatment or special testing. We always confirm exact lead time with your quote so you can plan your project schedule accurately.
Lead Time Guide
Simple CS/SS custom: 7–10 days · Alloy steel: 10–14 days · Exotic materials (Inconel, Hastelloy): 14–21 days · Large quantities or heat treatment required: 21–28 days · Air freight available for urgent requirements
Factors Affecting Lead Time
MOQ
Is there a minimum order quantity for custom fasteners?
No strict MOQ — we supply from 1 prototype to full production runs
Our Approach to MOQ
We do not impose a strict minimum order quantity for custom fasteners. We understand that engineering projects often require sample or prototype quantities for fit and function testing before committing to full production. We supply from single prototype pieces through to large project production runs of thousands.
Typical Order Scenarios
Single prototype for R&D · Small batches for trials (10–50 pcs) · Medium project runs (100–1,000 pcs) · Large EPC project BOM supply (1,000+ pcs per line item) · Repeat scheduled production batches
Pricing Structure
Docs
What quality documents do you provide with custom orders?
Full MTR, dimensional inspection, heat treatment and test certificates
Standard Documentation
All custom fastener orders are supplied with a full set of quality documentation as standard — no extra charge. The documentation package is traceable back to the raw material heat/lot number and covers every step of the manufacturing process.
Additional Documentation
Third-party inspection (TPI) by your nominated inspector or a neutral third party is available on request. NACE MR0175 compliance documentation, PED/CE marking and witness testing can be arranged.
Standard Documents Supplied
NACE
Can you supply NACE MR0175 / ISO 15156 compliant fasteners?
Yes — for sour service oil & gas applications
NACE MR0175 Compliance
NACE MR0175 / ISO 15156 defines material requirements for equipment used in hydrogen sulphide (H₂S) sour service environments — oil & gas production and processing where stress corrosion cracking (SCC) is a risk. We supply NACE-compliant fasteners with full documentation confirming compliance with hardness limits and other requirements.
NACE Compliant Grades
ASTM A193 B7M (studs) · A194 2HM (nuts) · SS 316 / 316L (tested to hardness limits) · Duplex 2205 · Super Duplex 2507 · Inconel 625 — all with NACE compliance documentation
NACE Documentation Package
Why RR Hydraulic
The Right Partner for Non-Standard Requirements
When standard products don’t meet your requirements, our custom manufacturing capability delivers — with full quality documentation and fast turnaround.
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Any Drawing Format Accepted — PDF, DXF, STEP, sketch or sample — we work from whatever you have
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No Minimum Order Quantity — 1 prototype piece to full production runs — every quantity welcomed
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Exotic Material Expertise — Inconel, Hastelloy, Titanium, Duplex — we regularly machine the materials others can’t
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Full ISO Documentation — MTR, dimensional inspection, heat treatment and NACE compliance certificates as standard
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Quote Within 24 Hours — Send your drawing today and receive a full quote with lead time by the next business day
Get Started
Request a Custom Quote
Send us your drawing or specification below and we will respond with a detailed quote and lead time within 24 hours.
Custom Fastener Enquiry
Fill in the details below. The more information you provide, the more accurate our quote will be.
What Happens Next?
Our technical team reviews every enquiry personally. Here is what to expect after you send your request.
Within 24 Hours
Our technical team reviews your requirement and sends a detailed quote with lead time
On Approval
First article / prototype produced and submitted for your approval before full production
With Delivery
Parts shipped with full MTR, dimensional inspection report and all required certifications
Need Faster?
WhatsApp us directly at +91 123 456 7890 for an even faster response on urgent custom requirements
Also Send Your Drawing To
sales@rrhydraulic.com
Attach PDF, DXF, STEP, photos or any format — we accept everything
Resources
Downloads & Reference Documents
Useful reference documents for custom fastener projects — material data, standards guides and quality documentation.
Custom Fastener Capability Statement
Full list of custom manufacturing capabilities, materials, sizes, coatings and documentation available
Download PDF
Exotic Material Grade Chart
Density, max temp, corrosion ratings and applications for all specialty materials we machine
Download PDF
ISO 9001:2015 Certificate
Quality management certification — available for all orders for procurement and tender submission
Download PDF
Our Standard Range
Also Available as Standard Products
Many custom requirements can be fulfilled from our standard range — explore our full product catalogue first.
