Standards & threads

Finished boltDrawing-defined acceptanceNo grade-specific finished-bolt specification was established in the reviewed sources.

Define final mechanical acceptance, traceability and contamination / handling requirements for unalloyed zirconium 702.

The reviewed F468 nickel/titanium routes are not assigned to zirconium. A B550 material certificate does not replace testing of the finished bolt.

Raw material specificationASTM B550/B550MUNS R60702

R60702 · zirconium bar and wire

Specify the exact grade and material condition; B551 plate is a separate form.

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.

Mechanical testing ASTM F606/F606M

Mechanical test methods for fasteners; select applicable tensile, yield and hardness tests. This standard supplies methods, not a material grade or pass/fail limits. Define those limits and sampling in the part specification.

Test-method reference ↗
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

Process chemistry

Medium, concentration, impurities, cleaning cycle and temperature.

Avoids a broad acid-resistant claim without the actual exposure.

Grade and form

R60702, required B550 / project specification and delivery condition.

Identifies commercially pure 702 and its stock certificate.

Joint requirements

Required strength, mating materials and finished-part inspection.

Adds mechanical and assembly requirements to corrosion-based selection.

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

Which material standard applies to Zirconium 702 bolt stock?

B550/B550M identifies R60702 bar and wire. B551 is a separate plate reference. Specify the stock condition, then define the completed bolt’s mechanical acceptance, dimensions, thread and inspection records.

What distinguishes a 702 bolt order from a 705 order?

702 is the unalloyed zirconium grade, while 705 is zirconium-niobium with a different identity. Retain R60702, the specified final properties and any contamination or handling controls on the purchase documents.

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 Zirconium 702 bolt

Send a drawing or add your dimensions and quantity.

Continue to enquiry ↗
Combine several products in one enquiry
Zirconium 702 hex boltsEnquire ↗
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