The PROLOK RTBM516-25 Resytork Security Machine Screw offers a robust and removable tamper-resistant solution for secure installations requiring both protection and access. Designed with a 2-way Resytork drive and button head, this M5 x 16mm machine screw is manufactured from corrosion-resistant 304 stainless steel. Ideal for high-security environments where controlled removal is necessary, this pack of 25 includes a matching driver to streamline professional installation.
What’s Included in the Box
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25 × PROLOK Resytork Button Head Machine Screws – M5 x 16mm, 304 Stainless Steel 
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1 × Matching Resytork 2-Way Driver Bit 
Main Features
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Resytork 2-Way Drive: Tamper-resistant yet removable with the included matching driver. 
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M5 x 16mm Size: Ideal for moderate-duty, precision fastening in access-controlled areas. 
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Button Head Design: Provides a low-profile, clean finish and enhanced security. 
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304 Stainless Steel Material: Excellent resistance to corrosion and environmental wear. 
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Includes Driver Bit: Convenient and installation-ready straight out of the box. 
Detailed Specifications
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Part Number: RTBM516-25 
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Thread Type: Machine 
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Size: M5 x 16mm 
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Head Type: Button 
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Drive Type: Resytork (2-Way) 
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Material: 304 Stainless Steel 
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Finish: Natural stainless steel 
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Pack Size: 25 screws + 1 driver bit 
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Application: Secure, removable fixing in access panels, public fixtures, and equipment housings 
Warranty Information
Backed by a standard manufacturer’s warranty covering material and workmanship defects under standard use conditions.
Brand Description
PROLOK is a leader in anti-tamper and security fastener solutions. Trusted by security contractors, facility managers, and infrastructure providers, PROLOK products offer superior protection for high-risk installations and sensitive enclosures.
SKU / Part Number
RTBM516-25
Practical Use Scenarios
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Electrical Panels: Secure access doors while retaining controlled removability. 
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Public Infrastructure: Fix components in public areas with tamper resistance and maintenance access. 
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Industrial Equipment: Protect machine access points, covers, and modules. 
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Access-Controlled Cabinets: Use in kiosks, terminals, and control boxes. 
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Transportation & Transit: Lock down panels in buses, trains, and public stations. 
Excellence for the Australian and New Zealand Market
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Made from 304 stainless steel, suitable for ANZ weather and compliance requirements 
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Distributed through authorized local suppliers 
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Complies with regional safety and performance expectations 
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Ideal for councils, utilities, and commercial contractors 
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Includes driver tool to ensure professional readiness and ease of installation 
Datasheets / Downloadable Resources
📄 Technical Datasheet – PROLOK RTBM516-25 Security Screw (PDF)
 FAQs – RTBM516-25
Q1: What size is the RTBM516-25 screw?
A1: The screw is M5 in diameter and 16mm in length.
Q2: What type of drive does the RTBM516-25 use?
A2: It uses a 2-way Resytork drive, which provides tamper resistance while allowing authorized removal with the included driver.
Q3: What material is the RTBM516-25 made from?
A3: The screw is made from 304-grade stainless steel for durability and corrosion resistance.
Q4: Does the RTBM516-25 come with the appropriate driver?
A4: Yes, the pack includes a matching Resytork driver bit.
Q5: Can the RTBM516-25 be used outdoors?
A5: Yes, it is made from stainless steel, making it suitable for outdoor and high-humidity environments.
Q6: How many screws are in each RTBM516-25 pack?
A6: Each pack contains 25 screws and 1 Resytork driver.
Q7: Is the RTBM516-25 tamper-proof or tamper-resistant?
A7: It is tamper-resistant—designed to deter unauthorized removal but removable with the correct driver.
Q8: What are common uses for the RTBM516-25?
A8: Common applications include securing panels, enclosures, public infrastructure, and access-controlled equipment.
Q9: Is this screw compliant with Australian safety standards?
A9: Yes, it meets safety and environmental performance requirements for ANZ markets.
Q10: Where can I request the datasheet for RTBM516-25?
A10: The Technical Datasheet – RTBM516-25 (PDF) is available upon request from authorized PROLOK distributors.