PremFixer coordinate measuring machine in the quality inspection room

Quality Control

Rigorous quality control for reliable bicycle fasteners

Quality is not an afterthought — it's embedded in every stage of our manufacturing process. We hold ISO 9001:2015 certification from Bureau Veritas and operate a comprehensive quality management system spanning raw material verification, in-process inspection, laboratory testing, and final audit. Every batch is traceable from raw material to finished product with full documentation support.

ISO 9001 Certified Bureau Veritas since 2020
1500h+ Salt Spray Neutral salt spray rating
100% Inspection Critical dimension check
5 QC Stages Incoming to final audit
0.01mm Precision Optical CMM accuracy

Quality Control Process

Five-stage inspection from raw material to final shipment

01

Incoming Material

Supplier certification verification, chemical composition by spectrometer, and dimensional spot check on raw stock before production begins.

  • Mill certificate review
  • Spectrometer verification
  • Dimensional sampling
02

In-Process

Real-time monitoring during production. First-piece and last-piece verification, dimensional checks at defined intervals with SPC control charts.

  • First-piece approval
  • SPC sampling intervals
  • Tool wear monitoring
03

Laboratory Testing

Mechanical and corrosion testing per applicable standards. Tensile, hardness, torque, and salt spray tests on samples from each production batch.

  • Tensile & hardness
  • Torque coefficient
  • Salt spray (1500h+)
04

Final Inspection

100% critical dimension check. Optical sorting for surface defects, thread gauge verification, and coating thickness measurement before packaging.

  • 100% optical sorting
  • Thread gauge GO/NO-GO
  • Coating verification
05

Pre-Shipment Audit

AQL sampling inspection per ISO 2859. Documentation review, packaging inspection, and Certificate of Conformance issued before release.

  • AQL sampling plan
  • Documentation review
  • CoC issued

Quality Assurance Framework

Comprehensive certification, testing, and standards compliance

Quality Documentation

What you receive with every shipment

Certificate of Conformance

Issued for every shipment confirming all products meet specified requirements per purchase order and applicable standards.

Material Certificates

Mill test certificates (MTC) showing chemical composition, mechanical properties, and heat number traceability for raw materials.

Inspection Reports

Detailed dimensional inspection reports with measurement data, salt spray test results, and surface treatment verification records.

Batch Traceability

Complete chain of custody from raw material lot to finished product. Every batch uniquely identified and traceable throughout production.

Why Quality Matters

The impact of reliable fasteners on your product

Safety First

Bicycle fasteners are safety-critical components. Every batch is tested to ensure structural integrity under real-world riding conditions.

Zero Defects

100% optical sorting on critical parts eliminates dimensional and surface defects before shipment. Consistent quality batch after batch.

Reduced Liability

Full documentation provides legal traceability and compliance evidence. Protects your brand from quality-related claims and recalls.

Long-Term Reliability

Corrosion-resistant coatings verified to 1500+ hours salt spray. Consistent torque values prevent loosening over product lifetime.

Quality You Can Trust

Our ISO 9001:2015 certified quality system ensures every fastener meets your specifications. Request a sample quality documentation package to evaluate our standards before placing your first order.