Inconel 718 12-Point Flange Bolts
ASME B18.2.5M · component drawingASTM B637 — bar / forgings
Inconel 718 12-point flange bolts for compact, highly loaded oilfield equipment joints, with aged strength and head geometry defined together on the equipment drawing.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Solution treated / solution treated and aged
EN 10204 3.1 MTC + heat-number traceability
Inconel 718 in this connection
Precipitation hardening gives 718 its high strength; its specified condition is central to loaded and hot-service joints.
- Connection
- Compressor casings & compact pressure-equipment joints
- Critical dimensions
- Wrenching size · flange diameter · under-head radius
Which standard is on your order?
Raw Material Specifications
Finished-Bolt Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Solution treated and agedFor A1014 bolting, solution treatment is followed by precipitation aging to develop the specified high-temperature strength.
What we can make in Alloy 718
Forms & dimension guide
Fully threaded / Partially threaded
The difference is the plain shank. Fully threaded bolts have threads along the shank up to the head transition; partially threaded bolts retain an unthreaded grip section beneath the flange.
External head / Internal recess
The difference is where the tool engages. An external 12-point head is gripped around its outside by a matching socket. An internal spline recess is driven by a bit inserted into the head. These are different drive structures and should not be specified interchangeably.
- Product forms
- Metric 12-point pattern · Inch drawing pattern
- Dimensional control
- Wrenching size · flange diameter · under-head radius
- Manufacturing
- CNC-machine short runs; form production blanks by the selected heading or forging route. Finish the double-hex drive, bearing flange and threads to the equipment drawing.
- Final condition
- Solution treatment and aging establish the ordered strength and hardness. Hot-service and oilfield routes may differ.
- Inspection
- Heat-treatment lot · tensile / hardness · specified elevated-temperature tests
Where 718 fits — and what matters
Oil & Gas
Utility skids and instrument supportsInconel 718 12-point flange bolts fasten utility skids and instrument supports where a 12-point socket gives useful indexing around restricted equipment access. The flange supports the loaded head seat. Utility connections and pressure-boundary parts have separate acceptance requirements on the equipment drawing.
Furnaces & Heat Treatment
Heat-treatment fixturesInconel 718 12-point flange bolts fasten heat-treatment fixtures where a 12-point socket gives useful indexing around restricted equipment access. The flange supports the loaded head seat. Hot dwell, thermal expansion and repeated furnace cycles set the working load.
Power & Turbines
Boiler-duct supports and hot auxiliary bracketsInconel 718 12-point flange bolts fasten boiler-duct supports and hot auxiliary brackets where a 12-point socket gives useful indexing around restricted equipment access. The flange supports the loaded head seat. Hot dwell and start-stop expansion act on the supported or moving component.
Same 12-point flange bolt. Different material priorities.
Inconel 718 material dataInconel 625
Molybdenum and niobium provide solid-solution strength, combined with resistance to chloride pitting and crevice corrosion.
Inconel 625 12-Point Flange BoltsA-286
An iron-based precipitation-hardening alloy for high-strength connections operating at elevated temperature.
A-286 12-Point Flange BoltsIncoloy 800H
Controlled carbon and grain structure distinguish 800H from ordinary 800 for creep and stress-rupture duties.
Incoloy 800H 12-Point Flange BoltsIncoloy 925
Age-hardenable nickel alloy combines strength with corrosion resistance for specified sour-service equipment.
Incoloy 925 12-Point 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
Compressor casings & compact pressure-equipment joints: Pressure / cyclic load · hardness · tool clearance · environment.
Material & final condition
Solution treatment and aging establish the ordered strength and hardness. Hot-service and oilfield routes may differ.
Connection inspection
Wrenching size · flange diameter · under-head radius. Heat-treatment lot · tensile / hardness · specified elevated-temperature tests.
Build your 718 12-point flange bolt enquiry
Upload drawing insteadQuestions about 718 12-point flange bolts
Why include hardness with a 718 oilfield bolt order?
The strength and hardness condition is part of environmental qualification as well as mechanical acceptance. The heat-treatment route must match the project exposure and finished-bolt specification.
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.