Typical MOQ
10pieces
Subject to product and material review.
Conditions
MOQ is typically 10 pieces, subject to product, material and manufacturing-route review.
Super Duplex 2507 Hex Bolts — ASTM A1082/A1082M
MaterialSuper Duplex 2507Change · 45 grades
- Material
- Super Duplex 2507 · UNS S32750
- Material focus
- High strength · chloride corrosion resistance
- Common applications
- Seawater equipment · process systems
- Main elementsComposition limits · wt.%
- Cr 24–26%
- Ni 6–8%
- Mo 3–5%
- N 0.24–0.32%
Standards & threads
Finished boltASTM A1082/A1082MS32750 · special-purpose bolting
Specify the exact UNS and condition; include A962/A962M common requirements. Inch and metric designations are separate order choices, not mixed unit tables.
S32750 is explicitly listed in the reviewed A1082 grade table. Additional corrosion / phase-balance requirements need named methods and acceptance limits.
Raw material specificationASTM A276/A276M / ASTM A479/A479MUNS S32750
S32750 · stainless bar
Identify S32750, solution treatment and the exact stock-form specification. Keep material tests separate from finished-bolt acceptance.
Dimensions · metricISO 4014 / ISO 4017Coarse pitch · partial-thread bolts / full-thread hex screws
Dimensions · inchASME B18.2.1Inch hex bolts / hex cap screws
Select the bolt or cap-screw pattern, head dimensions and thread length. Hex and heavy hex are different choices.
Threads · metricISO 261 / ISO 965-1Metric M · pitch plan and tolerance system
Threads · UNC / UNFASME B1.1Unified inch · coarse / fine series
State diameter, TPI, series and external class: e.g. 1/2-13 UNC-2A or 1/2-20 UNF-2A. Select 2A / 3A with the mating-thread fit; UNC and UNF do not mate.
Sources & editions Reviewed 2026-10-19
Historical samples support the stated grade coverage. The ordered edition controls the full requirements.
Preview your dimensions
Example dimensions, not a stock size.
Simplified right-hand thread appearance. No tolerance, fit or standard compliance is simulated.
Head dimensions · optional
Head proportions are illustrative: s = 1.5d, k = 0.625d. They are not standard-table values and will not be submitted as specified dimensions.
Quality documents
Heat number traceability
Every delivery traceable by heat number
Mechanical testing
Included with every delivery
Thread inspection
GO / NO-GO gauging · sampled inspection
Methods, sampling and acceptance criteria follow the agreed specification. PMI, third-party inspection and additional records are agreed separately.
Before production and at delivery
During quotation, a redacted certificate from a previous order can show the document format and recorded tests. It is a historical example, not certification of this product or a new order. Shipment documents must correspond to the material and batch actually supplied.
How to read a historical certificate sample ↗Prepare your enquiry
Send a drawing and quantity.
No drawing? Use these details.
- Size
- d × L Diameter × under-head length
- Quantity
- Pieces Required quantity per size
- Thread
- Metric / UNC / UNF Pitch or TPI + thread class
- Coverage
- Full / Partial For partial, include threaded length
Full material checklist
Chloride environment
Medium, chloride exposure, temperature and crevice conditions.
Avoids treating super duplex as universally suitable for chloride service.
Condition and section
S32750, solution-treated condition and bolt / starting-stock size.
Connects the material review to the actual part section.
Project inspection
Required microstructure / corrosion tests, sampling and acceptance criteria.
Defines additional evidence beyond the chemistry certificate.
Commercial terms
Indicative terms; confirmed in your quotation.
Sample review
~20days
Freight, import duties and taxes are separate.
Conditions
Samples are typically reviewed on an approximately 20-day basis. BYBOLT may cover agreed sample manufacturing; buyer freight, import duties and taxes remain separate.
Production review
25–35days
Urgent requirements can be discussed.
Conditions
Regular production is commonly reviewed on a 25–35 day basis. Urgent requirements can be discussed against the complete specification.
Typical deposit
30%
T/T or LianLian. Balance before dispatch.
Conditions
Payment can be arranged by T/T or LianLian. A typical order uses a 30% deposit, with the balance completed before dispatch.
Technical help
How should I specify a 2507 hex bolt beyond the alloy name?
Identify S32750, the stock reference, and the required finished condition. A1082/A1082M provides a special-purpose bolting route with A962/A962M common requirements. Add dimensions and thread to complete the product definition.
What should I state for 2507 corrosion or phase-balance testing?
Name each required test method, sampling scope and acceptance limit. For corrosion testing, include the relevant test conditions. Treat these as explicit inspection requirements rather than assuming the word super duplex defines the complete test plan.
Read a thread designation Metric / UNC / UNF
M12 × 1.75–6g12 mm diameter · 1.75 mm pitch · external class 6g
1/2-13 UNC-2A1/2 inch · 13 TPI · coarse · external class 2A
1/2-20 UNF-2A1/2 inch · 20 TPI · fine · external class 2A
Examples explain designations, not available sizes. Specify fine pitch explicitly. UNC and UNF do not mate; full or partial threading is a separate choice.
Thread classes and inspection ↗Related material guides
Download the PO and receiving checklist (PDF)
Guides for your enquiry
Specify your Super Duplex 2507 bolt
Send a drawing or add your dimensions and quantity.
Continue to enquiry ↗
Combine several products in one enquiry
Super Duplex 2507 hex boltsEnquire ↗