*USED* Hexagon socket thin cylindrical head anti-theft screw M4x8 After-sales assy package; KOR; G30L

Secure, inconspicuous, and ready for a budget-friendly upgrade to your hardware projects. This used hexagon socket screw features a thin cylindrical head and an M4x8 footprint, specifically designed for anti-theft security. Sold as part of an after-sales assembly package, with origin noted as KOR and batch code G30L, it’s a practical choice when you need reliable tamper-resistant fasteners without paying the price of brand-new components.

Why this security screw stands out

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  Tamper-resistant design: The hex socket head requires the correct driver, adding a layer of protection against casual tampering for enclosures, panels, and mounted components.
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  Low-profile, cylindrical head: A slim profile keeps the fastener nearly flush in tight spaces, preserving aesthetics and avoiding interference with adjacent parts.
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  Precise dimensions: M4 diameter with an 8 mm length provides secure fastening in panels and substrates designed for standard M4 threads.
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  Used item with traceability: Comes from a Korea-origin assembly package (KOR; G30L), offering real-world performance history at a more accessible price.
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  Versatile for repairs and replacements: Ideal for electronics enclosures, control boxes, automotive interiors, and other security-conscious applications where a discreet fastener is preferred.

Ideal use cases

Use this screw to reinforce access panels, instrument housings, or equipment enclosures where you want to deter unauthorized opening while maintaining a clean, professional look. It’s well-suited for DIY projects, cabinet installations, or repair work where security-minded hardware is required but new parts are out of reach.

What to know before you buy

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  Condition: Used. Expect minor signs of prior use; cosmetic wear may be present, but the fastener remains functional for its intended purpose.
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  Package contents: Sold as an after-sales assembly package. Exact count and included accessories may vary with each lot but align with typical assembly components.
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  Installation considerations: Requires a matching hex driver compatible with a standard hex socket head. Not all bits fit every security head, so verify driver compatibility before use.
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  Compatibility: Designed for M4 internal threads and panels that can accommodate an 8 mm screw length. Check your enclosure’s hole depth and thread compatibility before installation.

Practical tips for best results

• Test fit on a scrap piece to confirm seating depth and head clearance before full installation.
• Use a calibrated torque approach to avoid over-tightening, which can strip threads or deform delicate materials.
• Store alongside other security screws to ensure you always have the right driver and fastener on hand during repairs.

Specifications at a glance

• Thread size: M4
• Length: 8 mm
• Head style: hex socket, thin cylindrical
• Purpose: anti-theft/security fastener
• Condition: used
• Origin: Korea (KOR); Batch: G30L