Super Duplex 2507 Hex NutASTM A1082 · ASME B18.2.2 · Manufacturer, trader & exporter, India
UNS S32750 · W.Nr 1.4410
A Super Duplex 2507 hex nut is a standard hexagon nut. ASTM A1082 (S32750) where specified — nuts furnished when specified; otherwise may be machined from ASTM A276 / A479 bar (UNS S32750), where applicable — finished requirements to the purchase specification or project drawing. Standard hex nuts for general bolting, to ASME B18.2.2 or ISO 4032 (DIN 934 is the legacy DIN reference).
- ASTM A1082
- ASME B18.2.2
- EN 10204 3.1 / 3.2
- Export packing
Reviewed by the Kanak Steel & Engineering Co. technical team · Updated October 2026
What is a Super Duplex 2507 Hex Nut?
- What it is
- A standard hexagon nut
- Finished spec
- ASTM A1082 (S32750) where specified — nuts furnished when specified
- Material / feedstock
- ASTM A276 / A479 bar (UNS S32750), where applicable
- Dimensions
- ASME B18.2.2 · DIN 934 (legacy DIN)
- Grade
- Super Duplex 2507 · UNS S32750
- Best at
- Seawater and high-chloride service where strength also matters
Super Duplex 2507 Hex Nut Specification
| Product | Super Duplex 2507 Hex Nut |
|---|---|
| Finished fastener specification | ASTM A1082 (S32750) where specified — nuts furnished when specified |
| Material / feedstock specification | ASTM A276 / A479 bar (UNS S32750), where applicable |
| Dimensional standard | ASME B18.2.2 · DIN 934 (legacy DIN) |
| Manufacturing route | To the finished specification where specified; otherwise machining from bar, where applicable |
| Project / purchase specification | Yes — finished fastener requirements are to the purchase specification or project drawing |
| Sizes | M10 – M64 · ½" – 4" (others on request) |
| Threads | UNC · UN-8 · metric coarse |
| Testing | PMI (as specified in the PO) · dimensional · NDT and IGC on request |
| Documents | EN 10204 3.1 or 3.2 on request / as specified in the PO |
When to Choose a Hex Nut
Standard hex nuts for general bolting, to ASME B18.2.2 or ISO 4032 (DIN 934 is the legacy DIN reference).
- ASME B18.2.2 · DIN 934 (legacy DIN)
- Metric and inch
- Matching material to bolt
More on choosing: Hex nut guide.
Super Duplex 2507 Hex Nut: Why 2507 for hex nuts
Standard hex nuts for general bolting, to ASME B18.2.2 or ISO 4032 (DIN 934 is the legacy DIN reference). In Super Duplex 2507, the choice usually comes down to the medium and temperature — the rows here are the points buyers check for this exact combination.
| Why this grade | Duplex fasteners add strength in chloride service. Super Duplex 2507 is picked for seawater and high-chloride service where strength also matters. |
|---|---|
| Typical service | Offshore & subsea — Seawater injection, firewater and subsea piping. |
| Bolting | B7 (coated), B8M or duplex studs, as the project specifies |
| Sour service | Listed in NACE MR0175 / ISO 15156-3 within its limits — state it on the order |
Super Duplex 2507 Hex Nut Chemical Composition
Under technical review for TDS.
| Element | Current requirement |
|---|---|
| Chromium | As specified |
| Nickel | As specified |
| Molybdenum | As specified |
| Nitrogen | As specified |
| Copper | As specified |
| Carbon | As specified |
| Manganese | As specified |
| Silicon | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification to be verified: ASTM A240 for UNS S32750.
Super Duplex 2507 Hex Nut Mechanical Properties
Under technical review for TDS.
| Property | Current requirement |
|---|---|
| Tensile strength | As specified |
| Yield strength 0.2% | As specified |
| Elongation | As specified |
| Hardness | As specified |
Numerical specification requirements are published only after the applicable current standard edition has been verified. Governing specification and condition to be verified: ASTM A240 for UNS S32750 — Solution-annealed plate & sheet.
Full chemistry, properties and equivalents are on the Super Duplex 2507 grade page.
Standards on this page
Other Super Duplex 2507 fasteners
Super Duplex 2507 Hex Nut — questions buyers ask
Can I use a standard hex nut on flange studs?
Flange bolting normally specifies heavy hex nuts; standard hex nuts are for general joints.
What nut is used with Super Duplex 2507 hex nuts?
Usually a nut in the same alloy — it may be machined from ASTM A276 / A479 bar, where applicable; finished requirements are to the purchase specification or project drawing.
Which standard covers Super Duplex 2507 hex nuts?
Finished fastener specification: ASTM A1082 (S32750) where specified — nuts furnished when specified. Material / feedstock: ASTM A276 / A479 bar (UNS S32750), where applicable. Dimensions: ASME B18.2.2 · DIN 934 (legacy DIN). State the finished specification, material and dimensions on your purchase order or project drawing.
What decides the price of a Super Duplex 2507 hex nut?
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 or 3.2 certificates available on request / as specified in the PO; dimensional reports as required. PMI can be arranged depending on product and requirements, as specified in the PO.
Sources: the ASTM / ASME specifications named on this page and producer datasheets · Last updated October 2026