*USED* Thin head hexagon socket head carbon steel galvanized spring washer combination screw-M5*12 K004

Meet the compact powerhouse for tight-spot assemblies: a used M5 x 12mm Thin Head Hex Socket Head Cap Screw with an integrated spring washer, finished in galvanized carbon steel. This pre-owned fastener blends a shallow profile with reliable locking, ideal for projects where space is at a premium and vibration is a factor.

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  Slim head design reduces the fastener footprint, letting panels sit flush or near flush in cramped enclosures or chassis. Perfect for electronics housings, control boxes, and furniture where a taller screw would interfere with components.
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  Integrated spring washer delivers constant preload and resistance to loosening in vibration-prone assemblies, eliminating the need for a separate washer and lock washer.
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  Galvanized carbon steel offers robust strength with corrosion resistance for indoor and sheltered outdoor environments, extending service life of light- to medium-duty installations.
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  M5 x 12mm thread and length provide compatibility with standard M5 hardware kits, nuts, and tapped holes commonly used in machinery, automotive interiors, and DIY projects.
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  Pre-owned condition (K004) — visually inspected and ready for use in non-critical applications or budget-conscious restorations. Ideal for prototypes, hobby builds, or replacement fasteners where cosmetic wear is acceptable.
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  One piece per unit — a straightforward, reusable part that simplifies inventory and reduces parts-count on site.

How to use: A hex (Allen) key that fits standard M5 socket-head fasteners drives this screw. If your assembly has shallow panels or tight tolerances, this thin-head design helps you avoid interference while maintaining a secure clamp. For best results, match with an M5 nut or tapped hole and ensure the integrated washer seats flat against the surface for even load distribution.

Compared to bulkier or non-washer alternatives, this screw streamlines your hardware setup by combining a lock-washer action with a compact head in a single component. It’s a practical choice for OEM repairs, equipment upgrades, and hobby projects where you want dependable performance without adding bulk or extra parts.

Specification snapshot (for quick reference):

• Head: Thin hex socket head
• Thread: M5
• Length: 12 mm
• Finish: Galvanized carbon steel
• Feature: Integrated spring washer
• Condition: Used (K004)