Super Duplex S32760 Heavy Hex Nuts
ASME B18.2.2ASTM A276
Super Duplex S32760 heavy hex nuts complete grade-specific stud connections on seawater and process equipment. Their larger wrenching body suits maintenance tooling, while proof load, thread fit and bearing dimensions establish the match to the stud and flange.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution annealed and quenched
EN 10204 3.1 MTC + heat-number traceability
Which standard is on your order?
Raw Material Specifications
Finished-Nut Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Solution annealed and rapidly cooledSolution annealing followed by rapid cooling controls harmful precipitates and preserves the ferrite–austenite structure.
What we can make in Super Duplex S32760
Regular hex
Use on equipment covers and mounting brackets with standard socket access. The compact wrenching envelope is useful where adjacent fasteners or housing walls restrict tool clearance.
Heavy hex
Use on flange-bolting sets and pressure-equipment joints calling for a heavy-hex pattern. The wider bearing footprint and larger wrench size require more seat area and socket clearance than a regular hex nut.
Thin hex
Use in restricted axial spaces or as part of a specified two-nut locking arrangement. Reduced thread engagement means a thin nut is not a direct load-capacity replacement for a full-height nut.
- Metric thread
- M4–M100
- Inch thread
- 1/4″–4″
- Patterns
- Heavy hex
- Thread systems
- Metric · UNC · UNF · 8UN · UNJ
- Final condition
- Solution annealed and quenched
- Inspection
- Thread plug gauges · Across flats · Nut height
Manufacturing route
Small lots use machined blanks. Volume nut blanks use a forming route compatible with the alloy before machining the bore and tapping.
Heat treatment & final condition
Solution treatment and cooling control the duplex structure. Subsequent processing must preserve the ordered corrosion and mechanical condition.
Finished geometry
Internal thread gauging, usable engagement and bearing-face alignment are checked after final processing.
Where Super Duplex S32760 fits — and what matters
Subsea & ROV connections
Super Duplex S32760 Heavy Hex NutsSubsea connection tooling needs a nut profile it can engage predictably. S32760 heavy hex nuts provide that larger external hex in a super duplex material used for marine equipment. The nut’s strength, coating or lubricant, and cathodic-protection exposure need to be coordinated with the stud and installation procedure.
Connection requirements
- Tool socket and nut dimensions
- Stud strength and nut proof load
- Lubrication and cathodic-protection exposure
Seawater pumps
Super Duplex S32760 Heavy Hex NutsPump cover nuts carry the closure load through the internal thread and onto the casing seat. S32760 heavy hex nuts are useful when the seawater pump uses a grade-specific super duplex bolting system. The washer or spotface needs to support the bearing face fully, leaving room for the socket around the hex.
Connection requirements
- Bearing seat and socket clearance
- Nut thread class
- S32760 heat and finished-nut test records
High-pressure valve bonnets
Super Duplex S32760 Heavy Hex NutsS32760 heavy hex nuts can complete high-load valve bonnet stud sets in chloride-bearing service. Their substantial wrenching surface helps during repeated overhaul work. Nut height and stud projection must be checked together so full thread engagement does not obstruct the stem hardware or the tightening tool.
Connection requirements
- Bonnet and stem clearance
- Stud projection and nut height
- Valve service and proof-load requirement
Same heavy hex nut. Different material priorities.
Super Duplex S32760 material dataSuper Duplex 2507 Heavy Hex Nuts
2507 heavy hex nuts suit loaded seawater and brine stud connections that call for super duplex corrosion resistance. Their larger wrenching body assists controlled tightening and maintenance. The nut must carry the selected stud tension through its threads and bearing face, so proof-load acceptance and seat dimensions are part of the set specification.
254 SMO Heavy Hex Nuts
254 SMO heavy hex nuts suit chloride-process stud joints that need a highly alloyed austenitic component at the loaded threads and seat. Their substantial flats are useful during pump and exchanger overhaul. Nut capacity is specified for the mating stud, with the selected dimensions providing the required engagement and bearing area.
Inconel 625 Heavy Hex Nuts
Inconel 625 heavy hex nuts suit substantial seawater and wet-chloride stud connections. Localized-corrosion resistance matters beneath the seating face and inside the loaded threads. The broad pattern fits robust pump spotfaces and subsea connections with sufficient clearance for the installation tooling.
From drawing to documented delivery
- 01Drawing & BOMForm, dimensions and quantity
- 02Material & formingGrade, heat and manufacturing route
- 03Final inspectionGeometry, threads and ordered tests
- 04Documents & dispatchLot records and identified packing
Order documents
- Material identity
- UNS S32760 · heat number · ordered condition
- Final-part acceptance
- Final condition and any ordered phase-balance, corrosion or impact testing.
- Dimensional record
- Thread plug gauges · Across flats · Nut height
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your Super Duplex S32760 heavy hex nut enquiry
Questions about Super Duplex S32760 hex nuts
Does a matching UNS make the stud and nut a matched set?
Matching chemistry addresses only one part of the order. Nut strength, effective engagement, internal thread fit and surface friction must also suit the stud and assembly tightening method.