The Hillman M8-1.25 mm D x 12 mm L Heat Treated Steel Hex Head Cap Screw is built for dependable, high-strength fastening in metal-to-metal assemblies. This 50-piece boxed pack delivers ready-to-use M8 coarse-thread screws that stand up to repeated assembly and disassembly in demanding environments, from shop benches to field installations.
Key specifications
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Product type: Hex head cap screw
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Brand: HILLMAN
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Diameter & thread: M8 with 1.25 mm coarse thread pitch (M8-1.25)
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Length: 12 mm
- Finish/material:
Heat-treated steel, Grade 8.8 -
Quantity: 50 pieces per box
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Packaging: Boxed
Why heat-treated Grade 8.8 steel matters
Heat treatment elevates hardness and fatigue resistance, delivering stronger clamp loads in metal components and reducing wear over time. The Grade 8.8 designation signals a robust balance of strength and ductility, making these screws a reliable choice for securing brackets, plates, frames, and panels where steady performance under load is essential.
Ideal uses
- Metal framing, machinery housings, and equipment mounts
- Automotive and trailer assemblies where a compact, strong fastener is needed
- DIY projects such as shelving, brackets, and enclosures
- Repair and maintenance tasks requiring quick, dependable metric fasteners
How this screw fits into your toolkit
Pair these M8 hex head cap screws with matching M8 nuts and appropriate washers to optimize surface contact and load distribution. The coarse thread provides reliable engagement in metal-to-metal joints, while the hex head enables straightforward drive with standard wrenches or sockets. For installers who value consistency, this 50-piece box ensures you’ll have enough supply to tackle multiple projects without interruption.
