*USED* Hexagon socket head bolts with blue and white zinc plating Accessory Package_Mechanical semi-finished products_M4*8

For makers who want a reliable, compact fastening solution without breaking the bank, these USED Hexagon Socket Head Bolts offer clean performance in a familiar M4×8 footprint. Coated in blue and white zinc plating, they combine corrosion resistance with easy visual identification in busy workbenches.

What you get

Each bolt is a metric M4 thread with an 8 mm grip length, designed for tight assemblies where space is at a premium. They come as part of an accessory package of mechanical semi-finished products, making them a practical add-on for builders who value ready-to-use hardware.

Key features

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  Size and head: M4 thread, 8 mm length, hex socket head for secure drive with a standard Allen wrench.


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  Finish: blue and white zinc plating that provides corrosion resistance and makes it easy to differentiate these bolts from other hardware.


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  Condition: pre-owned; typical handling marks with no bending or deformation; threads appear clean and usable with standard maintenance.


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  Packaging: part of an accessory package for mechanical semi-finished products—great for stocking up on spare fasteners.


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  Applications: well-suited for light-duty assemblies in DIY projects, hobby robotics, 3D printer frames, enclosures, model making, and prototyping.

Practical use and care

To maximize longevity, inspect threads before installation, chase damaged threads if necessary, and use appropriate torque. For assemblies where vibration is a factor, consider a small dab of threadlocker (where tolerances and disassembly plans allow) to maintain secure seating without compromising future service.

Why choose these used bolts

Opting for pre-owned hardware can be a smart choice for hobbyists and workshops that value cost-effective, dependable fasteners. The blue/white zinc finish remains attractive and protective in most environments, and the M4×8 size is a staple in many compact frame builds and brackets, making these bolts immediately usable in several ongoing projects.