Incoloy 800 Custom fasteners
ASTM B408
Incoloy 800 custom fasteners use heat and oxidation resistance for thermal equipment at drawing-defined bearing, locating or threaded interfaces. The manufacturing route starts with the functional datums and required final condition.
- MOQ
- 100PCS
- Samples · typical
- ~20 days
- Production · typical
- 25–35 days
- Heat treatment
- Annealed
EN 10204 3.1 MTC + heat-number traceability
Which standard is on your order?
Raw Material Specifications
Threads · Metric
Threads · Inch
Heat Treatment
AnnealedAnnealing reduces work hardening and restores ductility for the specified supplied condition.
What we can make in Alloy 800
Head & drive
Choose the drive around the installed tool path: external flats need space around the head, while a socket recess needs axial access. Flange diameter determines the bearing footprint on the equipment face.
Shank & interfaces
Use shoulders and steps to locate tooling, pivots or covers rather than relying on thread clearance for positioning. Diameter tolerances and transition radii must match the mating bore and seat.
Thread & end form
Use unequal ends for housings and nuts with different engagement depths. Cross-holes, special tips and thread reliefs can provide pin retention, adjustment or clearance at a specific interface.
- Geometry
- Stepped shanks · Special heads · Ends
- Thread systems
- Metric · UNC · UNF · 8UN · UNJ
- Inputs
- Drawing · CAD · Parts list
- Final condition
- Annealed
- Inspection
- Drawing dimensions · Critical fits · Thread gauging
Manufacturing route
CNC machining suits samples and small lots. Cold heading or hot forging is selected for volume production according to alloy formability, head section and size.
Heat treatment & final condition
The ordered annealed or solution-treated state is retained in the lot record; forming and machining do not replace the specified thermal condition.
Finished geometry
Head geometry, bearing face, shank and thread fit are checked after the final machining and thermal operations.
Where 800 fits — and what matters
Furnaces & Heat Treatment
Heat-treatment fixturesIncoloy 800 drawing-based special alloy fasteners provide drawing-defined pins, stepped retainers or shoulder connections for heat-treatment fixtures. The loaded shoulder, locating fit and service-removal features establish the manufactured geometry. Hot dwell, thermal expansion and repeated furnace cycles set the working load.
Power & Turbines
Boiler-duct supports and hot auxiliary bracketsIncoloy 800 drawing-based special alloy fasteners provide drawing-defined pins, stepped retainers or shoulder connections for boiler-duct supports and hot auxiliary brackets. The loaded shoulder, locating fit and service-removal features establish the manufactured geometry. Hot dwell and start-stop expansion act on the supported or moving component.
Chemical Processing
Reformer tube-support and heater fixturesIncoloy 800 drawing-based special alloy fasteners provide drawing-defined pins, stepped retainers or shoulder connections for reformer tube-support and heater fixtures. The loaded shoulder, locating fit and service-removal features establish the manufactured geometry. These parts work in the heated equipment zone, where sustained loading and thermal expansion govern their section and clearance.
Same custom fastener. Different material priorities.
Incoloy 800 material dataIncoloy 800
UNS N08800 · Current grade- Carbon
- ≤0.10%
- What changes
- General heat and oxidation resistance; no grain-size requirement in the family comparison.
Incoloy 800H
UNS N08810- Carbon
- 0.05–0.10%
- What changes
- Controlled carbon and coarse-grain condition for creep and stress-rupture duty.
Incoloy 800HT
UNS N08811- Carbon
- 0.06–0.10%
- What changes
- Tighter carbon and Al + Ti control (0.85–1.20%), with solution treatment and coarse grain for creep duty.
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 N08800 · heat number · ordered condition
- Final-part acceptance
- Grade chemistry, supplied condition and ordered mechanical requirements.
- Dimensional record
- Drawing dimensions · Critical fits · Thread gauging
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 800 custom fastener enquiry
Questions about 800 drawing-based special alloy fasteners
Which features control acceptance on a custom part?
The datum system and functional interfaces determine inspection: a locating shoulder, seal seat or short thread can be more important than the largest overall dimension. Keep these features identified on the revision supplied for manufacture.