Stainless Steel Internal Heart-Shaped Anti-Theft Screws

Product introduction

This product is a typical special-shaped fastener. The head adopts an inner plum blossom with column anti-theft groove. It can only be assembled and disassembled with special tools, effectively preventing human damage. As stainless steel fasteners, they are made of 304 or 316 stainless steel, which have excellent corrosion resistance and are suitable for anti-tamper scenarios such as outdoor equipment, public facilities, and electronic cabinets.

 

The product is a non-standard fastener and can be customized with various head types such as round head, countersunk head, pan head, etc., and the thread specification and length can be processed on demand. We focus on customizing services for various types of non-standard fasteners, and strictly implement quality control from groove accuracy to dimensional tolerances to ensure reliable anti-theft functions. Supports small batch samples and large batch supply, welcome to customize anti-theft solutions.

 

Product design and features

The stainless steel internal torx anti-theft screw is a high-performance fastener that integrates anti-tampering, beauty and durability. It is a typical special-shaped fastener. Its core design is that the head adopts an inner plum blossom groove, and an anti-theft pillar or special heterostructure is set in the center. Only matching special tools can be installed and disassembled.

 

As a non-standard fastener, its main features include:

Anti-theft structure: The inner plum blossom slot has a column in the center, or adopts a non-standard plum blossom tooth shape, which effectively prevents disassembly with ordinary tools and is suitable for anti-disassembly scenarios such as outdoor equipment and public facilities;

High torque transmission: Compared with cross groove or slotted groove, the plum blossom groove structure has a larger contact area, is less likely to slip when tightening, and can withstand higher torque;

Diversified head shapes: Can be matched with various head shapes such as round head, countersunk head, pan head, cylindrical head, etc. to adapt to different assembly space and appearance requirements;

Corrosion resistance: Made of stainless steel, it maintains long-term stability in humid, outdoor or corrosive environments.

As a typical representative of stainless steel fasteners, this product not only ensures the anti-theft function, but also has excellent corrosion resistance. It is widely used in various high-value equipment and public facilities.

 

Materials and application fields

This product is made of high-quality stainless steel materials and is a high-quality stainless steel fastener. The main materials include:

304 stainless steel: general-purpose austenitic stainless steel, with good corrosion resistance and comprehensive mechanical properties, suitable for most indoor and outdoor environments;

316 stainless steel: Added molybdenum element makes it more resistant to chloride ion corrosion, and is suitable for high-corrosion environments such as coastal areas, marine engineering, and chemical equipment;

410/420 stainless steel: martensitic stainless steel, which can increase its hardness through heat treatment and is suitable for scenes with special requirements for strength.

 

As non-standard fasteners, it has a wide range of applications:

Public facilities: such as bus stops, park seats, street light poles, guardrails, etc., to prevent artificial disassembly and damage;

Electronic equipment: such as self-service terminals, charging piles, and server cabinets to prevent illegal disassembly;

Automobiles and new energy: such as electric vehicle battery pack shells, charging interfaces and other key safety parts;

Medical equipment: high-end medical instruments that need to be tamper-proof and resistant to disinfectant corrosion;

Security and transportation: outdoor equipment such as surveillance camera brackets, traffic lights, barrier systems, etc.

 

Quality control and certification system

Since stainless steel torx anti-theft screws are special-shaped fasteners, their production and quality control must comply with strict standards:

Raw material control: All stainless steel materials come with material certificates, and the composition is verified by a spectrum analyzer to ensure compliance with 304, 316 and other brand standards;

Dimensional accuracy control: Key dimensions (inner plum blossom groove shape, anti-theft column height, thread accuracy, head size) use professional measuring tools such as image measuring instruments and pass-and-stop gauges for full inspection or AQL sampling inspection;

Mechanical property testing: including tensile strength, yield strength, hardness, and torque testing to ensure that the performance requirements specified by the customer are met;

Anti-disassembly function verification: Each batch of products is assembled and disassembled using special tools to ensure that the anti-theft structure is effective;

System certification: The company has passed ISO 9001 quality management system certification, and automotive products can meet the requirements of IATF 16949, ensuring that each batch of non-standard fasteners has complete traceability;

Salt spray test: According to the application environment requirements, neutral salt spray test reports ranging from 72 hours to 1000 hours can be provided.

 

Customized services

We focus on providing various non-standard fastener solutions. The customized range of stainless steel torx anti-theft screws includes:

Groove customization: anti-theft grooves such as inner plum blossoms with columns, inner plum blossoms without columns, inner pentagonal corners, inner hexagonal corners with columns, etc. can be designed on demand;

Head type customization: Optional round head, countersunk head, pan head, cylindrical head, large flat head, etc. to adapt to different assembly surfaces and appearance requirements;

Size customization: Thread specifications (M2–M20), length, head diameter, and head height can all be customized according to customer drawings;

Material and performance customization: 304, 316, 410 and other stainless steel materials can be selected according to special requirements such as corrosion resistance, strength, and non-magnetism;

Customized surface treatment: stainless steel natural color, passivation, polishing, black chrome plating, etc., to meet the dual needs of appearance and anti-corrosion;

Packaging method: anti-static packaging, customized labels, bulk or pallet packaging can be provided to meet the needs of automated assembly lines.

Whether it is small batch sample verification or large batch stable supply, we can respond quickly to ensure that each special shape fastener accurately matches the customer's anti-tampering needs and assembly process.

 

FAQ

Q: What is the difference between torx anti-theft screws and ordinary torx screws?

A: Ordinary torx screws have a standard torx socket and can be removed with a universal torx wrench. The anti-theft type adds a raised anti-tampering column in the center of the torx socket, which can only be operated with a special hollow torx tool. It is a typical special-shaped fastener.

 

Q: Is this screw a standard part?

A: No. Torx screws with anti-theft columns are non-standard fasteners. There are no unified standard specifications on the market and they need to be customized and produced according to customer requirements.

 

Q: How to ensure the matching accuracy between the anti-theft groove and special tools?

A: We process the groove dimensions in strict accordance with the tool specifications or drawing requirements provided by the customer, and use supporting tools for assembly and disassembly testing before shipment to ensure accurate coordination and smooth operation.

 

Q: How long is the production cycle generally?

A: It usually takes 10–20 working days for small batch customization, and about 25–35 working days for large batch orders depending on the specific quantity. If a new mold is involved, an additional 7-10 days of mold production cycle will be required.

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