Inconel 625 Double-End Studs
ASME B18.31.2 · DIN 938 / 939ASTM B446 — rod / bar
Inconel 625 double-end studs for corrosive mineral-processing equipment covers, with a controlled grip and distinct body and nut ends for maintenance access.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Annealed / solution annealed
EN 10204 3.1 MTC + heat-number traceability
Inconel 625 in this connection
Molybdenum and niobium provide solid-solution strength, combined with resistance to chloride pitting and crevice corrosion.
- Connection
- Leach pump covers & process valve bonnets
- Critical dimensions
- Overall length · central grip · each end length and fit
Which standard is on your order?
Raw Material Specifications
Finished-Stud Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Annealed or solution annealedFor B446 stock, Grade 1 is annealed and Grade 2 is solution annealed; the higher-temperature solution treatment supports creep resistance rather than age hardening.
What we can make in Alloy 625
Forms & dimension guide
Clamping stud
Use for through-bolted covers and housings with access to both nuts. The plain grip spans the joint; independently sized threaded ends accommodate unequal nut-side clearances.
Tap-end stud
Use on valve bonnets and machine housings opened repeatedly for maintenance. The insertion end remains in the body while the outer nut is removed, reducing repeated wear of the housing thread.
- Product forms
- Equal threaded ends · Unequal threaded ends · Tap-end — specified fit
- Dimensional control
- Overall length · central grip · each end length and fit
- Manufacturing
- CNC-turn the central grip and shoulders, then produce the two thread ends to their separate lengths and fits.
- Final condition
- Annealing or solution annealing follows the ordered B446 grade and finished-fastener requirements.
- Inspection
- Heat traceability · final condition · finished-part mechanical and dimensional records
Where 625 fits — and what matters
Mining & Mineral Processing
Chemical-recovery pump and vessel coversInconel 625 double-end studs connect chemical-recovery pump and vessel covers through a threaded body end and an accessible nut end. The plain shank spans the cover grip. Leach solution and deposits act on the installed part; corrosion duty is separate from abrasive wear.
Chemical Processing
Chemical pump covers and reactor connectionsInconel 625 double-end studs connect chemical pump covers and reactor connections through a threaded body end and an accessible nut end. The plain shank spans the cover grip. Process liquid can remain at the contact after the exposed surface drains.
Pumps, Valves & OEM
Pump casings and valve bonnetsInconel 625 double-end studs connect pump casings and valve bonnets through a threaded body end and an accessible nut end. The plain shank spans the cover grip. Repeated maintenance makes fit, engagement and access part of the component specification.
Same double-end stud. Different material priorities.
Inconel 625 material dataInconel 718
Precipitation hardening gives 718 its high strength; its specified condition is central to loaded and hot-service joints.
Inconel 718 Double-End StudsHastelloy C-276
A nickel-chromium-molybdenum-tungsten alloy for severe process corrosion, including reducing acids and wet-chlorine environments.
Hastelloy C-276 Double-End StudsSuper Duplex 2507
High chromium, molybdenum and nitrogen support resistance to chloride pitting, alongside high duplex-stainless strength.
Super Duplex 2507 Double-End StudsMonel K-500
Nickel-copper corrosion resistance is combined with precipitation-hardened strength for loaded marine and pump components.
Monel K-500 Double-End StudsFrom drawing to documented delivery
- 01Drawing & BOMGrade, condition and part dimensions
- 02Sample lotOptional · typically ~20 days
- 03Production & testingTypically 25–35 days
- 04Documents & dispatchHeat-linked lots and packing
Connection & acceptance
Leach pump covers & process valve bonnets: Leach chemistry · deposits · body / nut-end thread lengths.
Material & final condition
Annealing or solution annealing follows the ordered B446 grade and finished-fastener requirements.
Connection inspection
Overall length · central grip · each end length and fit. Heat traceability · final condition · finished-part mechanical and dimensional records.
Build your 625 double-end stud enquiry
Upload drawing insteadQuestions about 625 double-end studs
When does C-276 deserve comparison with 625 here?
For particularly aggressive reducing acids or changing leach chemistry, compare corrosion data for the actual liquor. The same double-end geometry can be specified in either grade, but the material choice follows the medium and temperature.
Technical references & photo credits
Catalogue photography shows product form. Application examples connect alloy properties to equipment duties; they are not customer installation records. Quantities, schedules and the inspection scope are confirmed in the quotation.