Inconel 625 Hex Flange Bolts
ISO 4162 · ASME B18.2.1ASTM B446 — rod / bar
Inconel 625 hex flange bolts for chemical equipment covers and corrosion-exposed brackets, bringing the bearing face and external drive into a single nickel-alloy part.
- 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
- Agitator mounting flanges & process covers
- Critical dimensions
- Under-head length · flange diameter · seating face
Which standard is on your order?
Raw Material Specifications
Finished-Bolt 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
Integral flange
Use on mounting brackets and equipment covers to distribute head load over a wider seat and reduce loose parts during assembly. The flange needs a flat landing clear of nearby walls and radii.
Plain bearing face
Choose a plain underside for finished or coated seats where teeth would mark the surface. It also permits controlled sliding at the head-seat interface during tightening.
Flange vs loose washer
An integral flange speeds repeated assembly by keeping the bearing surface with the bolt. Retain a separate washer when the joint needs a replaceable wear face or a specifically hardened bearing layer.
- Product forms
- Smooth bearing flange · Drawing-specified bearing face
- Dimensional control
- Under-head length · flange diameter · seating face
- Manufacturing
- CNC-machine sample heads and bearing flanges. For production, form the blank by the suitable cold-heading or hot-forging route and finish the seating face and threads.
- 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
Chemical Processing
Mixer drives and process-equipment bracketsInconel 625 hex flange bolts clamp mixer drives and process-equipment brackets through an integral flange that spreads head load over the mounting face. Process liquid can remain at the contact after the exposed surface drains.
Pumps, Valves & OEM
Actuator mounts and pump baseplatesInconel 625 hex flange bolts clamp actuator mounts and pump baseplates through an integral flange that spreads head load over the mounting face. Repeated maintenance makes fit, engagement and access part of the component specification.
Mining & Mineral Processing
Leach-equipment and dosing-skid supportsInconel 625 hex flange bolts clamp leach-equipment and dosing-skid supports through an integral flange that spreads head load over the mounting face. Leach solution and deposits act on the installed part; corrosion duty is separate from abrasive wear.
Same hex flange bolt. 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 Hex Flange BoltsHastelloy C-276
A nickel-chromium-molybdenum-tungsten alloy for severe process corrosion, including reducing acids and wet-chlorine environments.
Hastelloy C-276 Hex Flange BoltsSuper Duplex 2507
High chromium, molybdenum and nitrogen support resistance to chloride pitting, alongside high duplex-stainless strength.
Super Duplex 2507 Hex Flange BoltsMonel K-500
Nickel-copper corrosion resistance is combined with precipitation-hardened strength for loaded marine and pump components.
Monel K-500 Hex Flange BoltsFrom 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
Agitator mounting flanges & process covers: Process leakage · cyclic agitator load · flange seating.
Material & final condition
Annealing or solution annealing follows the ordered B446 grade and finished-fastener requirements.
Connection inspection
Under-head length · flange diameter · seating face. Heat traceability · final condition · finished-part mechanical and dimensional records.
Build your 625 hex flange bolt enquiry
Upload drawing insteadQuestions about 625 hex flange bolts
What should the drawing define beneath the flange?
Flange diameter, seating-face form and the under-head radius establish contact with the component. A corrosive joint also benefits from an explicit surface finish and tightening lubrication requirement.
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.