2507 duplex stainless steel hex socket cup point set screws are compact, headless fasteners designed for secure positioning, locking, and adjustment in demanding assemblies. With a fully threaded body, an internal hex drive, and a concave cup point, this fastener can hold shafts, collars, gears, pulleys, valve components, and precision machinery parts without adding external head height.
For marine, chemical, offshore, pump, valve, and high-chloride environments, 2507 duplex stainless steel offers a useful balance of high mechanical strength and excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. Compared with standard 304 or 316 stainless steel, 2507 is often selected when the application needs stronger clamping performance and longer service life in aggressive media.
Product Overview
This product is a 2507 duplex stainless steel internal hex cup point set screw, also known as a hex socket grub screw or socket set screw. The screw is installed with an Allen key through the internal hex socket. The cup point creates a localized holding contact on the mating part, helping the screw resist loosening under vibration and repeated adjustment.
- Material: 2507 duplex stainless steel, UNS S32750
- Drive type: internal hex socket
- Point style: cup point / concave end
- Body style: headless, fully threaded
- Available standards: DIN 916, ISO 4029, or custom specification
- Typical sizes: metric and inch sizes available on request
- Finish: passivated, polished, cleaned, or customer-specified surface treatment
Why Choose 2507 Duplex Stainless Steel?
2507 duplex stainless steel combines austenitic and ferritic microstructures, giving it both high strength and strong corrosion resistance. The alloy is especially suitable for chloride-bearing environments where conventional stainless grades may suffer from localized corrosion.
For set screws, this matters because the part is small but often works in a critical locking position. If the screw corrodes, seizes, or loses holding force, the entire assembly can become difficult to service. 2507 helps reduce that risk in seawater equipment, desalination systems, chemical processing lines, and other harsh-duty applications.
Hex Socket and Cup Point Design
The internal hex socket allows the screw to be installed flush or below the surface of the assembly. This is useful where a clean outside profile is required or where moving parts cannot interfere with a protruding fastener head.
The cup point is designed to bite slightly into the mating surface. It gives stronger holding power than a flat point in many shaft and collar applications, while still being simple to install and remove with standard tools. For softer mating parts or surfaces that must not be marked, alternative point styles can also be discussed.
Common Applications
- Marine hardware and offshore equipment
- Pump, valve, and fluid handling assemblies
- Shaft collars, gears, pulleys, and couplings
- Chemical processing machinery
- Desalination and high-chloride water systems
- Precision stainless steel instruments and equipment
- Custom OEM mechanical assemblies
Specification Options
| Material grade | 2507 duplex stainless steel / UNS S32750 |
| Drive | Hex socket |
| Point | Cup point, concave end |
| Thread | Metric coarse, metric fine, UNC, UNF, or custom thread |
| Size range | Made according to drawing, standard, or sample |
| Surface | Passivation, cleaning, polishing, or customized finish |
| Inspection | Dimension, thread, socket depth, surface, and material verification |
Manufacturing and Quality Control
AODSON supplies duplex stainless steel fasteners for industrial buyers who need stable quality, consistent threads, and reliable material traceability. For 2507 hex socket cup point set screws, we can support standard dimensions as well as non-standard lengths, special thread requirements, and customized surface treatment.
Quality checks can include thread gauge inspection, socket fit inspection, dimensional measurement, surface review, and material certificate support. For projects with stricter operating conditions, please provide drawings, size requirements, quantity, and application environment so our team can recommend a suitable production and inspection plan.
Order Custom 2507 Set Screws
If you need 2507 duplex stainless steel hex socket cup point set screws for marine, chemical, offshore, or precision machinery applications, AODSON can help with standard supply and OEM customization. Send us your size, standard, drawing, material requirement, quantity, and target application, and our team will prepare a practical quotation for your project.
