2507 super duplex fully threaded hex bolts – These 2507 super duplex fully threaded hex bolts provide thread engagement along the available shank and a conventional external hex head for installation. AODSON supplies project-based dimensions, markings and documentation for equipment exposed to seawater, brine and corrosive process environments.

Product Specifications and Custom Options
| Product type | Fully threaded external hex bolt |
|---|---|
| Material | 2507 super duplex stainless steel / UNS S32750 |
| Manufacturing | Cold or hot heading, machining, thread rolling or cutting, marking and passivation |
| Finish | Clean machined, passivated or project-specific |
| Applications | Marine, offshore, desalination and chemical equipment bolted joints |
| Customization | Dimensions, interfaces, finish and inspection based on drawing or approved sample |
Product and Interface Review
Specify the governing dimensional and mechanical standard, nominal diameter, thread pitch, length, head dimensions and required documentation. Fully threaded geometry can suit flexible clamping positions, but bolt preload, tightening method, mating materials and anti-galling practice must be defined by the joint designer.
Key Manufacturing Features
- Fully threaded shank
- External hex head for standard tooling
- Metric and inch thread options
- Custom head marking and traceability
Materials, Manufacturing and Surface Finish
The manufacturing route is selected from diameter, length, quantity and governing standard. Heading or machining forms the head and shank; threads are rolled or cut as required. Material control, cleaning, passivation, marking and packaging follow the approved purchase specification.
The proposed route for this fully threaded external hex bolt is Cold or hot heading, machining, thread rolling or cutting, marking and passivation. Final material, tolerances, finish and testing remain subject to the approved drawing and purchase specification.
Typical Applications
- Offshore and marine structures
- Desalination equipment
- Pumps, valves and heat exchangers
- Chemical and coastal process systems
Quality Control and Approval
Inspection may include material certification, PMI, dimensional checks, thread gauges, mechanical testing and surface examination. Matching nuts and washers should be specified with compatible material and dimensional standards.
OEM Customization and RFQ Information
AODSON supports drawing-based and sample-based manufacturing for OEM buyers, distributors and engineering teams. For a practical quotation, send:
- 2D drawing and 3D model, or clear sample photographs
- Material grade and operating environment
- Critical dimensions, interfaces and inspection requirements
- Target quantity and expected repeat demand
- Surface finish, packaging and destination country
Request a quotation for this component or review related AODSON capabilities: Industrial Fasteners, Fastener Manufacturing, Quality Control.
Frequently Asked Questions
Can this fully threaded external hex bolt be customized?
Yes. Geometry, interfaces, material, finish and inspection can be produced from an approved drawing or sample. Feasibility is reviewed before quotation or tooling.
Which material grades are available?
The current range is 2507 super duplex stainless steel / UNS S32750. Final selection should consider corrosion, strength, temperature, wear and applicable customer standards.
What is needed for an accurate quotation?
Please provide geometry, material, quantity, critical tolerances, finish and delivery requirements. Describing the application helps engineering identify risks that may not be visible on the drawing alone.




