Inconel 718 Hex Bolts — ASTM A1014/A1014M

MaterialInconel 718Change · 45 grades

Inconel 718 hex head bolts in UNS N07718. Send a drawing or define the diameter, under-head length, thread and quantity. Add the final heat-treatment condition and governing bolting specification to establish the acceptance requirements.

Metric thread diameter
M1.2–M150
Thread systems
Metric / UNC / UNF
View standards
Material
Inconel 718 · UNS N07718
Material focus
Age-hardened strength · corrosion resistance
Common applications
Gas-turbine assemblies · cryogenic equipment
Main elementsComposition limits · wt.%
  • Ni 50–55%
  • Cr 17–21%
  • Fe Balance
  • Nb + Ta 4.75–5.50%
  • Mo 2.80–3.30%
  • Ti 0.65–1.15%

Standards & threads

Finished boltASTM A1014/A1014M / ASTM F2281N07718 high-temperature bolting; F2281 Type III Class C

Choose one governing route. A1014/A1014M invokes A962/A962M; F2281 is an inch route with its own condition and testing. Neither is implied by B637 stock.

Name the governing bolting specification, edition and heat-treatment condition on the enquiry. F2281 classification is cross-checked in the 2017 sample; its 718 condition is AH4.

Raw material specificationASTM B637UNS N07718

N07718 · bar, forgings and forging stock

Specify solution-treated versus aged condition and the processing route; a general 718 alloy description is insufficient.

Dimensions · metricISO 4014 / ISO 4017Coarse pitch · partial-thread bolts / full-thread hex screws

Select head width s, height k and thread length b. These are dimensional references here; other alloys do not automatically conform to the full steel/stainless product standard. Fine-pitch geometry needs a separate drawing or applicable standard.

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

State diameter × pitch and external tolerance class, e.g. M12 × 1.75–6g. Fine pitch must be written explicitly; 6g is a thread tolerance, not a strength grade.

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.

Heat treatment / conditionAnnealed + aged

Reference specimen: Hot-rolled bar · Ø25.4 mm · 1.0 in diameter (25.4 mm)

1750°F / 1 h, then 1325°F / 8 h; furnace cool to 1150°F for 18 h total aging.

Reference condition from material data. The ordered condition is agreed in your quotation.

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.

Thread coverage
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

Material certificate

MTC · EN 10204 3.1 included

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

Final material condition

UNS N07718, governing bolting specification and edition, final solution-treatment / aging condition and required properties. If the drawing is incomplete, identify the undecided requirements for review.

Prevents the incoming-stock condition from being taken as the completed-bolt condition.

Service & acceptance

Operating temperature, load or cycling basis, test temperature, test method and acceptance limits.

Separates material reference data from the evidence required for your fastener.

Traceability & thread inspection

Heat / lot identification, heat-treatment records, mechanical reports, thread class and final finish.

Connects the completed part and inspection results to the specified condition.

Example enquiry — adapt to your drawing

Please quote Inconel 718 hex bolts, UNS N07718, to drawing [number/revision], or diameter [value/unit] × under-head length [value/unit], quantity [pieces per size]. Thread: [designation/class]; coverage: [full/partial]; for partial threading, threaded length [value/unit]. Required final condition and heat-treatment route: [drawing/specification reference]. Service temperature and loading: [details]. Please state the proposed finished-bolting specification and lot-linked heat-treatment and test records.

Replace the brackets with your requirements, or send your drawing instead. If a condition or specification is undecided, flag it for review. This is an enquiry example; dimensions, availability, price and acceptance requirements are confirmed in the quotation and purchase documents.

Commercial terms

Indicative terms; confirmed in your quotation.

Typical MOQ

10pieces

Subject to product and material review.

Conditions

MOQ is typically 10 pieces, subject to product, material and manufacturing-route review.

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

Does a B637 certificate qualify a finished Inconel 718 bolt?

A B637 certificate documents starting-material requirements; it does not by itself establish conformity of the finished bolt to the ordered bolting specification. A1014/A1014M is a separate N07718 bolting route with A962/A962M common requirements. F2281 offers an alternative inch route. Select the governing bolting specification and final heat treatment on the order.

Which heat-treatment records matter for 718 bolts?

Request records for the final solution-treatment and aging route, linked to the finished lot and its mechanical results. State the required condition and acceptance specification; an aged-bar certificate alone may not describe the completed bolt processing.

Can I request these bolts without a drawing?

Yes. Start with diameter, under-head length, thread designation and quantity per size. Add full or partial threading and the specified material condition. We review any missing drawing or acceptance details before the order is confirmed.

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

Heat treatment is part of the specification

718 is precipitation hardenable: the solution-treatment and aging route affects the resulting properties. State the required final condition and whether the order specification controls the manufacturing and heat-treatment sequence. An alloy name or incoming bar certificate alone leaves these questions open.

Inconel 718 specification & evidence guide ↗

Define the load and temperature together

Provide service temperature, load duration and thermal or load cycling. Where the design requires creep, stress-rupture or elevated-temperature properties, identify the test and acceptance criteria explicitly. A room-temperature tensile value is not an elevated-temperature joint rating.

Inconel 718 heat treatment & property references ↗

INCONEL is a Special Metals trademark. Specify a required producer explicitly; the trade name is not a source guarantee.

Download the PO and receiving checklist (PDF)

Guides for your enquiry

Specify your Inconel 718 bolt

Send a drawing or add your dimensions and quantity.

Continue to enquiry ↗
Combine several products in one enquiry
Inconel 718 hex boltsEnquire ↗
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