Stainless Steel Screws Manufacturer in China
Precision SS Screws & Custom Hardware Solutions for Global Industries
We are a professional stainless steel screws manufacturer in China, producing custom screws in a wide range of materials, dimensions, grades, and specifications to meet diverse industrial requirements.
Welle Fastener supplies high-quality self-tapping screws, machine screws, self-drilling screws, and customized fastening solutions for global industrial applications. We produce fasteners in various sizes, materials, and specifications to meet diverse engineering and assembly requirements.
Our OEM stainless screws are manufactured according to international standards including ISO, DIN, and ANSI, offering excellent corrosion resistance, durability, and reliable performance. Welle Fasteners also provides OEM and ODM services, supporting custom designs, drawing-based production, and application-specific fastening solutions.
Stainless Steel Machine Screws Solutions
High-Quality SS Machine Screws & Bolts from China
Welle Fasteners offers a comprehensive range of stainless steel machine screws and bolts, including flat head, countersunk, pan head, raised countersunk, wing, track bolts, and square drive screws. Available in 304, 316, and 18-8 stainless steel, our machine screws come in metric, UNC, UNF, and BSW thread standards, providing reliable performance across diverse industrial and mechanical applications.
Our stainless steel machine screws are ideal for precision assemblies, offering excellent corrosion resistance and durability. We also provide flat head machine screws made from nylon, assorted kits, and customized solutions to meet OEM/ODM requirements. Welle Fasteners ensures strict quality control, fast delivery, and tailored support for your fastening projects.
Stainless Steel self drilling Screws |Wooden screws
High-performance stainless steel self drilling screws for fast, strong, and durable fastening in timber applications.
OEM SS self drilling screws are engineered for efficient installation, strong grip, and long-term durability in soft or hard wood.
Key Features:
- TX Six-Lobe Drive – excellent torque transfer, reduces cam-out
- Countersunk Reinforced Head – prevents breakage
- Self-Cutting Point – fast penetration, no pre-drilling needed
- Ribbed Head & Stabilized Shaft – smooth flush finish, straight insertion
- Optimized Thread – high pull-out resistance
- Waxed Surface – lower torque, faster driving
Applications:
- Timber construction & structural framing
- Outdoor decking, pergolas, and fences
- Furniture and modular wood assemblies
- General carpentry and interior installation
Stainless Steel Self-Tapping Screws
Precision-manufactured self-tapping screws compliant with international standards and industrial requirements.
Welle Fastener supplies stainless steel self-tapping screws manufactured in compliance with international standards including ISO, DIN, ASTM, ANSI, JIS, EN, AS, and GB. Products are available in sizes ranging from M2 to M100 with multiple head types such as pan head, flat head, oval head, hex head, and Phillips head to meet different industrial assembly requirements. These screws are designed for applications in electrical systems, heating equipment, and machinery, and are produced according to ASME B18.6.3 dimensional standards and ASME B1.1 thread specifications (UNC & UNF, Class 2A), ensuring consistent quality, reliable fastening performance, and global compatibility.
Stainless Steel Screw Grades (A2, A4, A4-70, A8) & Properties
Material grades and performance overview for industrial stainless steel Screws
Welle Fastener supplies stainless steel screws in multiple grades designed for different strength, corrosion resistance, and environmental requirements.
A2 (304 Stainless Steel)
General-purpose stainless steel with good corrosion resistance.
Widely used in construction, hospitality, and general industrial applications.
A4 (316 Stainless Steel)
Marine-grade stainless steel with high resistance to saltwater and chemical corrosion.
Suitable for outdoor, marine, and harsh environments.
A4-70
High-strength A4 stainless steel with a minimum tensile strength of 700 MPa.
Used in security fasteners and precision industrial applications requiring both strength and corrosion resistance.
A8 (1.4529 HCR)
High corrosion-resistant stainless steel with superior resistance to pitting, crevice, and stress corrosion cracking.
Designed for demanding chemical and industrial environments.
International Standards and Specifications
To ensure global compatibility, stainless steel nuts are manufactured according to international standards:
- ISO 3506 (stainless steel fasteners standard)
- DIN 934 (hex nuts)
- DIN 985 (nylon insert lock nuts)
- DIN 6923 (flange nuts)
- ASTM / ASME B18 standards
These standards define thread dimensions, mechanical performance, and inspection requirements, ensuring interchangeability across global supply chains.
Manufacturing Process & Quality Control of Stainless Steel Screws
We apply a controlled cold-forming manufacturing system to ensure mechanical consistency and dimensional precision.
Production Process:
- Cold forging &Cold heading
- Precision thread rolling for accuracy
- Heat treatment (if required)
- Surface cleaning & passivation
Quality Control:
- Material traceability (Mill Test Certificate 3.1 / 3.2)
- Dimensional inspection (go/no-go gauges, CMM)
- Mechanical testing (tensile, torque, hardness)
- Batch consistency control for OEM production
Why Choose Our Stainless Steel Screws?
Welle Fasteners supports fast and stable production for custom stainless steel screws and OEM components.
We support flexible supply solutions for global procurement:
- MOQ: available for small batch & bulk production
- Packaging: bulk pack / box / OEM branded packaging
- Lead time: stable production scheduling for OEM orders
- Global shipping: Chinalogistics support
We help procurement teams reduce supply chain risk while ensuring project timelines are met.
