Yuhuang Fastener Boosts Quality Control with Automated Visual Inspection & Full-Spectrum Testing Lab
2026-07-09
Automated Visual Inspection Workshop Ensures Zero Defect Output
The company has deployed multiple sets of high-precision optical visual inspection equipment, independently developed by Luosight Vision Technology. Equipped with vibration feeding trays, rotary glass detection platforms, multi-angle industrial cameras and real-time data display monitors, these machines complete full-dimensional automatic screening for every single screw.
The vision system automatically detects critical defects including thread damage, uneven blue nylon patch coating, missing rubber sealing washers, incomplete cross recess heads and dimensional deviations. All defective products are automatically separated during the inspection process, eliminating human error from manual sorting. The real-time monitoring screen synchronously records inspection data, supporting traceability for every production batch, greatly improving product consistency for its Nylock anti-vibration sealing screws in UNC inch sizes (2-56, 4-40, 6-32, 8-32) and metric M2-M5 specifications.
Independent Professional Testing Lab Delivers Comprehensive Performance Verification
To back up its strict ISO9001, IATF16949 and RoHS compliance standards, Yuhuang maintains a fully equipped dedicated quality control laboratory with a complete suite of professional testing instruments.
1
EDXRF X-ray Fluorescence Spectrometer
This precision device conducts non-destructive material composition analysis to confirm raw material is standard 18-8 SS304 stainless steel, and verifies all finished fasteners meet REACH and RoHS environmental standards without harmful heavy metal content.
2
Rockwell Hardness Tester
Professional operators perform regular hardness sampling tests on screws to guarantee stable mechanical strength, avoiding thread cracking or insufficient locking force during assembly.
3
Supplementary Full-Range Testing Equipment
The lab is also furnished with torque testers, salt spray corrosion test chambers, constant temperature & humidity cabinets, 2D dimensional measuring instruments and friction resistance testers. These devices simulate real complex working environments such as high humidity, drastic temperature changes and continuous vibration, to validate the anti-loose, waterproof and corrosion-resistant performance of nylon patch sealing screws before mass shipment.
Factory Quality Management Advantages
With two large-scale manufacturing bases covering a total of 20,000 square meters, Yuhuang operates a closed-loop production chain from cold heading, thread rolling, nylon patch coating to finished inspection. The upgraded intelligent vision inspection line and standardized physical & chemical testing lab form a dual-layer full-process quality control system covering raw material incoming inspection, in-process monitoring and finished goods outgoing verification.
All fastener products serve wide-ranging industries including consumer electronics, 5G communication, new energy vehicles, precision instruments and cabinet assembly, exported to over 40 countries worldwide. The company’s continuous investment in automation and testing capacity reinforces its commitment to supplying high-quality OEM customized stainless steel fasteners for global industrial partners.
About Dongguan Yuhuang Electronic Technology Co., Ltd.
Founded in 1998, YH FASTENER specializes in standard and non-standard precision hardware fasteners complying with GB, ANSI, DIN, JIS and ISO international standards. The enterprise integrates independent R&D, automated production, strict quality inspection and one-stop OEM customization services, maintaining long-term stable cooperation with well-known global brands in electronics, new energy and automotive sectors.