304 Stainless Steel Countersunk Locking Bolt
PS-D08 304 stainless steel countersunk paired locking bolt for drawing-controlled bicycle bottom-bracket, center-axis, and pivot assemblies.
304 stainless steel with natural finish. Final thread fit, length, assembly torque, locking method, and inspection plan follow the approved drawing and mating hardware.
01 Dimensions & Tolerances
Core dimensions are controlled for repeatable bicycle frame assembly. Custom dimensions, tolerances, and surface finish can be supplied from drawing.
| Parameter | Specification |
|---|---|
| Thread Size | M10×1.0 catalog reference; confirm drawing |
| Thread Accuracy | 6g external / 6H mating internal when specified (ISO 965-1 / ISO 965-2) |
| Thread Direction | Right-hand unless the approved drawing specifies otherwise |
| Hex Drive Size | Drawing controlled |
| Overall Length | Drawing controlled |
| Tolerance Grade | Feature-specific and drawing controlled |
02 Material & Performance
The confirmed material is 304 stainless steel with natural finish. Property class, mechanical values, corrosion requirements, and inspection evidence remain drawing- and test-report controlled.
| Parameter | Specification |
|---|---|
| Primary Material | 304 stainless steel |
| Material Grade / Class | Drawing-specified; ISO 3506-1 property class only when verified |
| Applicable Standards | ISO 3506-1; ISO 965-1 / ISO 965-2 when specified by the drawing |
| Tensile Strength | Material certificate / test-report controlled |
| Yield Strength | Material certificate / test-report controlled |
| Shear Strength | Joint and test-plan specific; not assigned from ISO 3506-1 |
| Hardness | Material certificate / test-report controlled |
| Density | Material certificate controlled |
| Process | Cold heading and/or CNC machining with thread rolling; route confirmed by drawing |
| Surface Finish | Natural stainless steel |
03 Application & Compatibility
Designed for bicycle OEMs, assembly factories, and component brands that need repeatable supply with documented QC.
| Parameter | Specification |
|---|---|
| Frame Type | Bicycle bottom-bracket, center-axis, and pivot locking assemblies; drawing controlled |
| Typical Position | Paired locking or pivot joint |
| Accessory / Mating Part | Male/female locking-bolt set and mating hardware per drawing |
| Environment | Customer application and corrosion requirement |
| Compatible Standards | ISO 3506-1; ISO 965-1 / ISO 965-2 when specified |
| Load Rating | Drawing and joint-validation specific |
| Recommended Torque | Joint-specific; validate against the mating parts and lubrication/locking condition |
| Maximum Torque | Not published without assembly validation |
| Installation Method | Paired locking-bolt assembly; final method follows the frame drawing |
| Recommended Tool | Drive size and tools follow the approved drawing |
| Thread Locker | Optional pre-applied locking compound when specified |
| Installation Position | Drawing controlled bicycle pivot or center-axis assembly |
Installation Steps
04 Quality Assurance
Inspection, testing, traceability, and packaging records follow the approved drawing, applicable standard, customer requirement, and agreed control plan. Qualified partner testing can be coordinated when specified.
| Test / Inspection | Standard & Criteria |
|---|---|
| Salt Spray Test | Method and duration follow the approved corrosion/coating specification; ISO 9227 when specified |
| Torque Verification | Joint-specific test plan; ISO 16047 only when applicable to the actual locking design |
| Hardness Testing | Per approved material and test plan |
| Thread Inspection | GO/NO-GO gauges to the specified ISO 965 tolerance |
| Dimensional Inspection | Sampling or 100% CTQ inspection per drawing and customer control plan |
05 Packaging & Ordering
Single pieces, samples, and production quantities can be quoted. Packaging, labels, kitting, and documentation are confirmed for the order; unit price scales with quantity and process requirements.
| Parameter | Specification |
|---|---|
| Standard Pack | Any quantity accepted; packaging confirmed by quotation |
| Packaging Material | Bulk, kitting, labels, and customer packaging available by quotation |
| Industry Batch Reference | No mandatory MOQ; unit price scales with quantity and process |
| Batch Pricing Model | Quantity-based quotation; approved sample fees may be credited to a follow-on production order |
| Required Quote Data | Drawing or sample, mating interface, quantity, material, finish, locking method, testing, and packaging |
Send your drawing, sample, or BOM and our team will confirm material, thread fit, finish, packaging, and lead time.
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