Stainless Steel Carbon Steel Anti Theft Machine Screw Metric Inch Size Security Fastener for Industrial Assembly
Product Overview
Our security screw is a professional tamper proof fastener designed to prevent unauthorized disassembly and theft. We adopt high grade stainless steel, carbon steel and alloy steel as raw materials, equipped with diversified drive structures including triwing, torx pin, one way, Y slot, triangle and clutch head. Products cover metric and inch full specifications, including self tapping thread and machine thread series, widely used in industrial manufacturing, automotive, electronics, plastic products, license plates and marine equipment. All items comply with ISO, RoHS standards with stable performance and long service life, which is the preferred anti theft fastening solution for global B2B buyers.
Core Features & Differentiated Advantages
Anti Theft Performance Special non-standard drive structure effectively resists disassembly by ordinary tools, delivering excellent anti-theft effect and higher safety than conventional screws.
Material Superiority 304/316 stainless steel, carbon steel and alloy steel optional; with zinc plated, nickel plated, black oxide or black nickel plated surface treatment for strong corrosion and rust resistance in complex environments.
Diversified Specifications Complete head types and sizes from M1 to M10 and various inch sizes; standard and non-standard custom production available to meet diverse installation needs.
High Mechanical Property Meets Class 48, Class 68, Grade 12.9 strength standards; high hardness, not easy to deform or break during long-term use.
Wide Adaptability Self tapping thread for plastic/sheet metal and machine thread for fixed assembly; easy installation with reliable fastening tightness.
Product Specifications
| Item | Specification Details |
| Main Material | 304 Stainless Steel, 316 Stainless Steel, Carbon Steel, Alloy Steel |
| Surface Treatment | Zinc Plated, Nickel Plated, Black Oxide, Black Nickel Plated |
| Head Type | Flat Head, Countersunk Head, Pan Head, Oval Head, Truss Head, Hexagon Head, Round Head, Csk Head |
| Drive Type | Triwing, Torx Pin, One Way, Y Slot, Triangle, Clutch Head Spanner |
| Thread Type | Self Tapping Thread, Machine Thread, Half Machine Thread |
| Size Range | Metric: M1 M2 M3 M4 M5 M6 M7 M8 M10; Inch: 8-32 and other inch sizes |
| Strength Grade | Class 48, Class 68, Grade 12.9 |
| Compliance Standard | ISO, RoHS, DIN912 |
| Application Size | Conventional length & customized length available |
Applications & Case Studies
Main Application Scenarios
- Automotive Industry: Vehicle interior parts, license plate fixing, automotive electronic components assembly.
- Electronic Industry: Household appliances, precision electronics, plastic shell enclosure fastening.
- Hardware & Decoration: Jewelry accessories, craft clasps, metal sheet connection.
- Marine & Outdoor: Marine equipment, outdoor facilities, corrosion resistant fastening occasions.
- General Industry: Plastic products, thin sheet metal, public equipment anti theft fixing.

Cooperation Cases
We have long-term cooperation with manufacturing factories, auto parts suppliers, electronic enterprises and hardware distributors worldwide. Our security screws feature stable quality and complete specifications, effectively helping clients solve equipment anti-theft and anti-disassembly problems, reducing equipment loss and maintenance costs.
5. Solutions & Value
Core Pain Points Solved
- Ordinary screws are easy to be privately disassembled, causing equipment loss and property damage → Special drive security screw achieves anti-theft and anti-tamper protection.
- Fasteners rust and fail quickly in humid, outdoor or marine environments → Premium materials and multi-surface treatments enhance corrosion resistance.
- Single specification cannot match diverse equipment → Full-size and multi-style products support one-stop procurement.
Comprehensive Value
Reduce after-sales maintenance costs for enterprises, improve equipment safety coefficient, support bulk wholesale and customized processing. As professional anti-theft fasteners, they help B-end buyers enhance product competitiveness and build stable supply chain cooperation.
6. Purchase Information & Customer Support
We support EXW factory price, wholesale, bulk orders and non-standard custom production. Complete product inspection reports and certification documents are provided. Our professional sales team offers 24/7 online service to address inquiries about specifications, samples, delivery cycles and packaging. Multiple logistics options ensure timely delivery worldwide.

7. Inquiry Guide
If you need security screw samples, detailed quotations, customized sizes or bulk order plans, please fill in the inquiry form below. Leave your required quantity, target specifications and contact information, and we will reply with a detailed offer and product solution as soon as possible.

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