Inconel, Hastelloy, Duplex & Titanium Fasteners — Made to Your Drawing
- Stud bolts, heavy hex nuts, hex bolts, socket screws and custom machined parts — plus alloy bar, plate, wire and strip.
- Custom orders from 10 pieces; product-specific MOQ applies. 45+ special alloy grades.
- Your initial 3D CAD model in 1 business day.
- Every shipment: EN 10204 3.1 MTC, heat traceability and mechanical test results. PMI testing and sampled GO / NO-GO gauging for threads.
Find Fasteners by Product, Material or Drawing
Start with a product, material or drawing. Each route leads to the same technical review.
Explore Our Fasteners
Browse standard forms and drawing-based parts in special alloys.
Browse Fastener Materials
Start with the grade on your drawing. Supply is reviewed for the exact product form, condition and standard you request.
Industries We Serve
Your partner for the most demanding industrial applications.
Oil & Gas
High pressure and corrosive fluids demand fasteners with high strength and resistance to corrosion and cracking.
Offshore & Marine
Saltwater exposure demands fasteners that resist chloride corrosion, pitting and crevice attack.
Chemical Processing
Aggressive chemicals and elevated temperatures demand fasteners with corrosion resistance matched to the process.
Furnaces & Heat Treatment
Repeated heating and sustained heat demand fasteners that retain strength and resist oxidation.
Power & Turbines
High temperatures and sustained loads demand bolting with creep resistance and lasting strength.
Pumps, Valves & OEM
Pressure cycling, vibration and corrosive fluids demand fasteners with fatigue strength and corrosion resistance.

Material Documents and Inspection
EN 10204 3.1 MTC, heat traceability and mechanical test results with every shipment. Inspect the report samples before you place your order.
Third-party testing by CNAS-accredited laboratories
Quality & DocumentationYour drawing. In 3D.
Receive an initial 3D model within 1 business day.*
What to send
- Drawing & revision
- Material grade
- Quantity
- Required inspection
*Within 1 business day after we receive a readable drawing by email. The initial model is for visual communication and may require correction; the approved drawing and purchase documents control.
Key Fastener Dimensions.
Review what to identify in your enquiry. The 3D guide and illustrations support reading; the approved drawing, agreed standard and purchase documents control.

Stud Bolt & Threaded Rod Dimensions
- Thread Designation
- Pitch / TPI
- Diameter
- Threaded Length
- Overall Length

Socket Screw Dimensions
- Head Diameter
- Head Height
- Drive Size
- Thread
- Overall Length

Hex Nut Dimensions
- Thread Designation
- Width across Flats
- Nut Height

Washer Dimensions
- Inside Diameter
- Outside Diameter
- Thickness

Fastener Buying Guides
All guidesReady to Share Your Requirement?
Send a drawing, BOM or a brief description to get started.
Common Questions
What Should We Send for a Quotation?
Send your drawing, BOM or a short description. Identify the product, material or UNS, dimensions or thread, quantity and any applicable standards. Add inspection, document and delivery requirements when they are already defined.
Can You Review a Drawing-Based Fastener?
Yes. Send the latest drawing revision with the alloy, quantity and applicable requirements. We review the requested geometry, material condition, manufacturing route and inspection scope before confirming what can be quoted.
What if Our Drawing Is Incomplete?
Share the information you have, such as the part type, dimensions, alloy, quantity, photographs or an existing specification. We will identify the points that still need agreement. Photographs and illustrative models do not establish dimensions, tolerances, material or performance requirements.
How Should Standards Be Specified?
List the dimensional standard, material specification, finished-product requirements and inspection or documentation requirements separately. Include the applicable revision when it is controlled by your project.
What Is Included with Every Delivery?
Every BYBOLT delivery includes an MTC / EN 10204 3.1 certificate, heat-number traceability and mechanical testing. Threaded products include sampled GO / NO-GO gauging. Test methods and acceptance criteria follow the agreed specification; PMI, third-party inspection and additional records are agreed separately.
Do You Manufacture Custom Fasteners?
Our factory supports custom alloy fastener manufacturing. Product, material, manufacturing route and inspection/documentation requirements are agreed for each order. If your purchasing process requires a facility assessment, include that requirement for review.










