Inconel 718 Thin hex nuts
ISO 4035ASTM B637
Limited axial space is the reason to use a Inconel 718 thin nut. Its precipitation-hardened strength for compact, highly loaded connections must be paired with the reduced thread engagement and the intended locking arrangement.
- 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
Which standard is on your order?
Raw Material Specifications
Threads · Metric
Threads · Inch
Dimension Reference
Heat Treatment
Solution treated; aged when specifiedSolution treatment prepares 718 for forming or machining, and subsequent aging develops the strength required by the ordered condition.
What we can make in Alloy 718
Reduced-height body
Use in compact adjustment mechanisms and panel assemblies where axial clearance rules out a full-height nut. Check the required proof load against the reduced engagement rather than selecting on clearance alone.
Jam-nut arrangement
Use with a second nut to lock an adjustment on a threaded shaft or linkage. The specified nut order and tightening sequence are part of the locking arrangement, not simply two nuts tightened independently.
- Pattern
- Thin hex · Jam nut
- Key dimensions
- Thread · Across flats · Height
- Threads
- Metric · UNC · UNF
- Assembly
- Adjusters · Paired nuts
- Final condition
- Solution treated · solution treated and aged
- Inspection
- Nut height · Across flats · Thread plug gauging
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 the specified aging condition are recorded against the production lot; final dimensions are checked after thermal processing.
Finished geometry
Internal thread gauging, usable engagement and bearing-face alignment are checked after final processing.
Where 718 fits — and what matters
Furnaces & Heat Treatment
Fixture pivots and conveyor shaftsInconel 718 thin hex nuts serve as jam or retaining nuts on fixture pivots and conveyor shafts where axial space is limited. Their reduced thread engagement is part of the retention design. Hot dwell, thermal expansion and repeated furnace cycles set the working load.
Power & Turbines
Hot-duct linkage pins and damper spindlesInconel 718 thin hex nuts serve as jam or retaining nuts on hot-duct linkage pins and damper spindles where axial space is limited. Their reduced thread engagement is part of the retention design. Hot dwell and start-stop expansion act on the supported or moving component.
Chemical Processing
Reformer support pins and heater-fixture rodsInconel 718 thin hex nuts serve as jam or retaining nuts on reformer support pins and heater-fixture rods where axial space is limited. Their reduced thread engagement is part of the retention design. These parts work in the heated equipment zone, where sustained loading and thermal expansion govern their section and clearance.
Same thin hex nut. Different material priorities.
Inconel 718 material dataIncoloy 800HT
Tightly controlled carbon and Al + Ti for creep duty.
- Connection priority
- Thread load in a reduced-height body
- N08811 material control
- 800HT tightens the 800-family chemistry around creep performance. Its solution-treated, coarse-grain condition and N08811 identity should remain linked through forming and final acceptance. At the short internal engagement and paired-nut faces, the relevant metal temperature can differ from the process or furnace set point.
A-286
Aged iron–nickel alloy strength for hot bolting.
- Connection priority
- Thread load in a reduced-height body
- Grade 660 class
- An ASTM A453 Grade 660 order includes its class and corresponding processing requirements. The alloy name A-286 alone does not identify that acceptance condition. At the short internal engagement and paired-nut faces, the relevant metal temperature can differ from the process or furnace set point.
310S
Low-carbon heat resistance in oxidation-exposed equipment.
- Connection priority
- Thread load in a reduced-height body
- 310S is not 310H
- S31008 is the low-carbon grade. For a component under sustained hot load, distinguish that specification from the controlled-carbon creep purpose of S31009. At the short internal engagement and paired-nut faces, the relevant metal temperature can differ from the process or furnace set point.
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 N07718 · heat number · ordered condition
- Final-part acceptance
- Lot-linked aging record and mechanical acceptance in the final condition.
- Dimensional record
- Nut height · Across flats · Thread plug gauging
- Traceability
- EN 10204 3.1 material certificate · production lot · identified packing
Build your 718 thin hex nut enquiry
Questions about 718 thin hex nuts
Can a thin nut replace a regular nut at the same load?
Reduced thread engagement changes stripping capacity. Check the reduced-height nut’s material condition and the intended jam-nut arrangement instead of transferring the regular nut’s load assumption.