Nylon PatchP-01 Phillips Pan Head Machine Screw with Blue Nylon Patch
Pre-applied nylon patch adds prevailing torque so joints stay tight under vibration and thermal cycling.
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01/03
Factory-Direct Since 30 Years · Dongguan, China
Custom Screw Manufacturer for Precision Screws, Hex Keys & Spring Plungers
YH Fastener (Yu-Huang Electronics Dongguan Co., Ltd.) designs and manufactures standard and drawing-based fasteners for OEM assemblers in automotive, consumer electronics and industrial equipment. From wire rod to final inspection, every step runs in-house across a 20,000 m² production base — giving buyers one accountable source for screws, tools and positioning components.
ISO 9001ISO 14001IATF 16949100% Inspected
YH-01
Screws
Machine, self tapping, sealing, security, shoulder, sems & nylon patch.
View range YH-02Wrench
Hardened hex keys and Torx keys matched to our drive recesses.
View range YH-03Spring Plunger
Ball and spring plungers for indexing, detent and positioning.
View range YH-04Customization
Non-standard parts built from your drawing, model or sample.
Start a project 02 — Product Showcase
Engineered Fasteners for OEM Assembly
Each part below is produced in our own cold-heading, thread-rolling and finishing lines. Choose a category, then request drawings, test reports or samples for your application.
Nylon PatchP-01 
SealingP-02 Custom Sealing Screws for Waterproof Fastening
Under-head sealing ring blocks water, dust and gas ingress at the thread — ideal for outdoor and electronic housings.
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Self TappingP-03 Phillips Pan Head Self Tapping Screw
Forms its own mating thread in plastic or thin sheet metal, removing a tapping operation from your line.
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SemsP-04 Hex Head Cross Recess Combination Screw with Double Washer
Pre-assembled spring and flat washers cut part count and prevent washers being missed on the assembly line.
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ShoulderP-05 Zinc-Plated Cross Recessed Anti-Loosening Shoulder Screw
Precision shoulder acts as a pivot or spacer, while the anti-loosening thread holds preload in moving assemblies.
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Torx DriveP-06 Torx Drive Machine Screw for Industrial Equipment
Six-lobe recess transfers higher torque with minimal cam-out, protecting both the screw head and driver bits.
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Torx KeyW-01 Stainless Steel Torx Hex Key Wrench
Corrosion-resistant L-key profiled to match our Torx and security recesses for clean, damage-free engagement.
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Hex KeyW-02 Hardened Zinc-Plated Hexagon L-Key Wrench
Heat-treated hex keys with accurate across-flats sizing to reduce rounding of socket heads during torque-up.
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Ball PlungerS-01 Stainless Steel Ball Plungers for Positioning & Locking
Spring-loaded ball provides repeatable detent force for fixtures, sliding doors and indexing mechanisms.
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Spring PlungerS-02 Anti-Loosening Spring Plungers for Mechanical Adjustment
Threaded body with locking feature keeps set position stable in jigs, tooling and machine guards.
View detailsBrowse by Fastener Type
Jump straight to the category that matches your bill of materials.
03 — Company Profile
About YH Fastener: Three Decades of Fastener Engineering
YH Fastener is the export brand of Yu-Huang Electronics Dongguan Co., Ltd., a hardware manufacturer that integrates R&D, production, sales and after-sales service under one roof. We specialise in screws, wrenches and spring plungers (positioning beads) — both to international standards and to customer drawings.
Our factory floor exceeds 20,000 m², with production sites in Dongguan, Shaoguan and Wuhan. Because raw-material processing, forming, heat treatment, surface finishing and inspection all happen in-house, buyers get consistent lot-to-lot quality and a single point of responsibility.
- Certified to ISO 9001, ISO 14001 and IATF 16949 for automotive supply chains
- Full-process quality control with multiple inspection gates per batch
- Standard and non-standard production from drawings, 3D models or samples
30YRS
Production Experience
Thirty years focused on screws, keys and plungers.
100%
Full Inspection
Every lot verified before it leaves the plant.
60+
Export Countries
Supplying buyers across Europe, the Americas and Asia.
24H
Engineering Response
Technical reply to drawings and RFQs within one day.
04 — Manufacturing Base
Inside Our 20,000 m² Production Facilities
Real workshop images from our plants — the equipment, inventory and people behind every shipment.
3
Production Sites
- DongguanHQ & Main Plant
- ShaoguanBranch
- WuhanBranch
05 — Process & Capability
From Wire Rod to Verified Shipment
Understanding how a fastener is made helps you specify it correctly. These are the six controlled stages every YH part passes through.
- STAGE 01
Material Selection
Carbon, alloy or stainless wire rod is verified against mill certificates before release to production.
- STAGE 02
Cold Heading
Heads and drive recesses are formed in multi-station headers for dense grain flow and strength.
- STAGE 03
Thread Rolling
Rolled — not cut — threads improve fatigue resistance and dimensional consistency.
- STAGE 04
Heat Treatment
Hardening and tempering bring screws and keys to the specified hardness and toughness.
- STAGE 05
Finishing & Functional Coats
Plating, passivation, nylon patch or sealing rings are applied to suit the operating environment.
- STAGE 06
Inspection & Packing
Dimensional, torque and appearance checks precede labelled, traceable export packing.
Manufacturing Capability at a Glance
Share your drawing or application details and our engineers will confirm feasibility, tolerances and the most cost-effective process route. Exact capability for your part is confirmed during technical review.
| Product Families | Machine, self tapping, sealing, shoulder, sems, captive, security, nylon patch, carbide insert and set screws; hex keys; Torx keys; spring & ball plungers |
|---|---|
| Materials | Carbon steel, alloy steel, stainless steel (e.g. 304 / 316) and other grades on request |
| Drive Types | Phillips, slotted, hex socket, Torx, tamper-resistant and custom security recesses |
| Surface Finishes | Zinc plating, nickel plating, black oxide, passivation and other finishes per specification |
| Locking & Sealing | Pre-applied nylon patch, captive washers (sems), under-head sealing rings |
| Standards | ISO, DIN, ANSI and JIS references, plus fully custom drawings |
| Quality System | ISO 9001 · ISO 14001 · IATF 16949, full-process quality control |
06 — Our Advantages
Why Global Buyers Choose YH Fastener
Procurement teams need more than a low unit price. They need parts that pass incoming inspection, ship on schedule and never stop an assembly line.
30-Year Specialization
Three decades focused on custom screws, wrenches and spring plungers means proven tooling, process know-how and fast root-cause answers.
Certified Quality Assurance
ISO 9001, ISO 14001 and IATF 16949 systems with full-process control and 100% final inspection on every shipment.
Engineering-Led Customization
Non-standard heads, drives, threads and coatings developed for automotive, consumer electronics and industrial equipment programs.
7×24 Technical Support
Senior sales engineers available around the clock to review drawings, answer specification questions and track orders.
Industries Served
AutomotiveConsumer ElectronicsIndustrial MachineryHome AppliancesPublic & Security EquipmentTooling & Fixtures 07 — Insights & Solutions
Read Hot Blog Fastener Engineering Insights
Practical guidance written by our application engineers on specifying, assembling and maintaining fasteners in real equipment.
Why Matched Torx Wrench Reduces Hidden Risks in Security Fastener Assembly
A key that is even slightly out of profile can cam out, strip the recess and leave a tamper-resistant screw impossible to service. Learn how pairing screws and keys from the same tooling protects your assembly.
Read article
08 — Buyer FAQ
Questions Procurement Teams Ask Us
Can't find your answer? Our sales engineers reply within 24 hours.
What types of fasteners does YH Fastener manufacture?
We manufacture machine screws, self tapping screws, sealing screws, shoulder screws, sems screws, captive screws, security screws, nylon patch screws, carbide insert screws and set screws, plus hex keys, Torx keys and spring and ball plungers — in both standard and custom versions. See the full range on our Products page.
Can you produce non-standard screws from my drawings?
Yes. Our engineering team reviews 2D drawings, 3D models or physical samples, confirms material, head style, drive, thread and finish, then builds tooling for cold heading and thread rolling. Visit Customization to learn more.
Which quality certifications does your factory hold?
Our production system operates under ISO 9001, ISO 14001 and IATF 16949. Every batch passes multi-stage inspection from incoming wire rod to final packing, and inspection records can be supplied with shipments.
How do you prevent screws from loosening under vibration?
Depending on the joint we recommend pre-applied nylon patch screws, sems screws with captive washers, or shoulder and sealing designs. The right choice depends on joint material, re-use cycles, assembly torque and operating temperature.
Do you export to my country and how do I start a project?
YH Fastener ships to more than 60 countries. Request our catalog or send your drawing, quantity and application to our sales engineers, and we will reply with a technical review within 24 hours. Logistics support is described under Global Service.
09 — Start Your Project
Send Us Your Drawing. Get an Engineering Review in 24 Hours.
Whether you need a proven standard screw or a fully custom fastener, YH Fastener's engineers will confirm feasibility, material and finish before production begins.