Incoloy 800 / 800H / 800HT Hex BoltASTM B408 · ASME B18.2.1 · Manufacturer, stockist & exporter, India
Alloy 800 · UNS N08800 / N08810 / N08811
An Incoloy 800 / 800H / 800HT hex bolt is a bolt with a hexagonal head, made from Incoloy 800 / 800H / 800HT to ASTM B408. Hex bolts join flanges, structures and equipment where one side is accessible for the head. Dimensions to ASME B18.2.1 or DIN 931 / 933.
- ASTM B408
- ASME B18.2.1
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is an Incoloy 800 / 800H / 800HT Hex Bolt?
- What it is
- A bolt with a hexagonal head
- Material
- ASTM B408
- Dimensions
- ASME B18.2.1 · DIN 931 / 933
- Grade
- Incoloy 800 / 800H / 800HT · UNS N08800
- Best at
- Furnaces, petrochemical heaters and high-temperature piping
Incoloy 800 / 800H / 800HT Hex Bolt Specification
| Product | Incoloy 800 / 800H / 800HT Hex Bolt |
|---|---|
| Material standard | ASTM B408 |
| Dimensional standard | ASME B18.2.1 · DIN 931 / 933 |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 · 3.2 with third-party inspection |
When to Choose a Hex Bolt
Hex bolts join flanges, structures and equipment where one side is accessible for the head. Dimensions to ASME B18.2.1 or DIN 931 / 933.
- Partially or fully threaded
- ASME B18.2.1 / DIN 931 / DIN 933
- Supplied with nuts and washers
Incoloy 800 / 800H / 800HT Hex Bolt Chemical Composition
| Element | Weight % |
|---|---|
| Nickel | 30.0 – 35.0 |
| Chromium | 19.0 – 23.0 |
| Iron | 39.5 min |
| Carbon | 0.10 max (800) · 0.05 – 0.10 (800H) |
| Aluminium | 0.15 – 0.60 |
| Titanium | 0.15 – 0.60 |
| Copper | 0.75 max |
| Manganese | 1.5 max |
Incoloy 800 / 800H / 800HT Hex Bolt Mechanical Properties
| Annealed plate | Value |
|---|---|
| Tensile strength | 520 MPa · 75 ksi (800) · 450 MPa · 65 ksi (800H) |
| Yield strength 0.2% | 205 MPa · 30 ksi (800) · 170 MPa · 25 ksi (800H) |
| Elongation | 30% |
Full chemistry, properties and equivalents are on the Incoloy 800 / 800H / 800HT grade page.
Standards on this page
Other Incoloy 800 / 800H / 800HT fasteners
Incoloy 800 / 800H / 800HT Hex Bolts for export
FOB / CIF · Nhava Sheva (JNPT), MumbaiIncoloy 800 / 800H / 800HT Hex Bolt — questions buyers ask
DIN 931 or DIN 933?
DIN 931 bolts are partly threaded; DIN 933 are fully threaded.
Which standard covers Incoloy 800 / 800H / 800HT hex bolts?
The material is ASTM B408; dimensions follow ASME B18.2.1 · DIN 931 / 933. Always state both on your purchase order, with the edition if your project specifies one.
What decides the price of a Incoloy 800 / 800H / 800HT hex bolt?
The alloy price, the size and dimensions, quantity, and the testing and documents required. Send your list and we quote the same working day.
What documents do you supply?
EN 10204 3.1 mill certificates as standard, 3.2 with third-party inspection on request, plus dimensional and PMI reports.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026