Professional Screw Supplier &
Custom Fastener Manufacturer

With over 21 years of precision manufacturing experience, we deliver high-quality custom screws in stainless steel, titanium, aluminum, brass, and more — tailored to your exact specifications.

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21+ Years

Professional Screw Manufacturing

2.1 Billion

Annual Production Capacity

24-Hour

Response & Support

About SSTLS

Shenzhen Shi Shi Tong Metal Products Co., Ltd. was established in 2009 and is located in Shenzhen, China. We are a professional custom screw manufacturer specializing in high-precision screws, bolts, and non-standard fasteners.

Our expertise spans across various materials including stainless steel, titanium, brass, iron, and aluminum. We serve industries such as electronics, automotive, aerospace, medical devices, and industrial machinery with reliable, high-performance fastening solutions.

ISO & SGS Certified Quality
Full CNC Machining & Cold Heading
Custom Design & Rapid Prototyping

11+ CNC & Multi-Station Machines ensuring precision and scalability.

Our Products

From standard to fully custom fasteners, we manufacture high-precision screws for diverse industrial applications.

Long Screws

Custom extra-long screws up to 500mm with high tensile strength. Ideal for industrial machinery and structural applications.

Materials: Stainless Steel, Carbon Steel, Titanium
Standards: ISO, DIN, ANSI, JIS, GB
Custom lengths & threading available

Shoulder Screws

Precision-engineered shoulder screws with tight tolerance. Used in robotics, automation, and precision instruments.

Materials: 416, 431, 440C Stainless Steel
Diameter: 2mm to 20mm
Custom shoulder length & finish

Allen / Hex Screws

High-strength hex socket screws with excellent torque resistance. Commonly used in automotive and mechanical assemblies.

Drive: Allen (Hex), Torx, Phillips
Grades: 8.8, 10.9, 12.9
Coatings: Zinc, Black Oxide, Dacromet

Self Tapping Screws

Sharp thread design for fast installation into metal, plastic, and wood. Ideal for electronics and sheet metal.

Types: Type A, B, AB, Tapping
Materials: Carbon Steel, Stainless Steel
Head: Pan, Truss, Flat, Round

Small Screws

Miniature screws from M0.8 to M3. Used in medical devices, watches, cameras, and precision electronics.

Materials: 304, 316, 420J2, Titanium
Drives: Slotted, Phillips, Torx
Custom packaging & traceability

Custom Screws

Fully non-standard screws based on your drawings. Rapid prototyping and low-volume production available.

Materials: A286, TC4, TA1, TA2, 440C
Processes: CNC + Cold Heading
Support: 24-hour quote & DFM feedback

Machine Screws

Standard and metric machine screws with nuts or tapped holes. High consistency and thread accuracy.

Standards: ISO, DIN, ANSI
Finishes: Plain, Zinc, Nickel
Thread: Coarse & Fine

Security Screws

Tamper-proof screws with unique drives (spanner, tri-wing, pin head). Protect sensitive equipment.

Drive Types: Pin Head, One Way, Tri-Lobe
Applications: Public Infrastructure, Electronics
Custom tooling support

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Why Choose SSTLS?

We combine decades of expertise with cutting-edge technology to deliver unmatched value.

Quality Guaranteed

SGS, ROHS, salt spray, torque, hardness, and coating thickness testing on every batch.

24-Hour Support

From pre-sales to after-service, we respond within 24 hours with tailored solutions.

Full Customization

Send your drawings — we handle material, finish, threading, and packaging.

Global Shipping

We ship worldwide with reliable logistics partners and full documentation.

Frequently Asked Questions

What is your minimum order quantity?

There is no minimum quantity — you can order any amount. However, smaller quantities may have a higher unit price.

How can I customize my screws?

Send us your drawings with details including material, surface treatment, quantity, and special requirements. We’ll provide a quote within 24 hours.

What materials do you offer?

We specialize in stainless steel (304, 316, 416, 431, 440C), titanium (TC4, TA1, TA2), aluminum, brass, carbon steel, and special alloys like A286.

Do you provide quality certifications?

Yes, we provide SGS, ROHS, salt spray reports, torque tests, hardness tests, and full material certifications upon request.

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Professional Screw Supplier & Custom Fastener Manufacturer