Hillman M8-1.25 mm x 12 mm Heat-Treated Steel Hex Head Cap Screw, 50-Pack

Regular price $18.49

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Hillman M8-1.25 x 12 mm Hex Head Cap Screw (50-Pack)

Heavy-duty metric hex cap screws made from heat-treated class 8.8 steel for reliable fastening in machinery, automotive, and construction projects. Coarse machine threads and a hex head deliver strong torque transfer and dependable holding power.


Key Features:

  • Durable Construction: Class 8.8 heat-treated steel provides high strength for general-purpose fastening
  • Corrosion-Resistant Finish: Zinc-treated surface helps protect against rust in typical indoor/outdoor use
  • High-Torque Hex Head: Hex cap design and machine threads enable secure tightening with a wrench or driver
  • Partially Threaded Shank: Promotes stronger clamping force and reduced shear movement
  • Metric Sizing: M8-1.25 thread pitch x 12 mm length for compatibility with metric hardware

Specifications Table:

Specification Details
Size M8-1.25 x 12 mm
Material Steel
Finish Heat-treated zinc/corrosion-resistant finish
Grade Class 8.8
Thread Type Coarse, machine thread
Head Type Hex head (cap screw)
Shank Partially threaded
Unit of Measurement Metric
Pack Quantity 50
Recommended Installation Pre-drill hole matching bolt diameter; tighten with wrench or driver

Frequently Asked Questions (FAQ):

Q: What size drill bit should I use for installation?
A: Pre-drill a hole that matches the bolt diameter—use an 8 mm bit for M8 hardware unless project specifications require otherwise.


Q: Are these fully or partially threaded?
A: They feature a partially threaded shank for stronger clamping.


Q: What grade are these screws?
A: Class 8.8 metric grade for general-purpose, high-strength applications.


Q: What tools are needed to install?
A: Tighten with a wrench or driver that fits the hex head.


Q: Is this listing for a bulk pack?
A: Yes, it includes 50 hex head cap screws.


A Polished Industrial Essential

Sleek, zinc-finished hex cap screws bring a crisp, utilitarian edge to bespoke millwork and custom metal accents. The compact M8 profile and polished head create a refined hardware moment that feels intentional, not incidental. Style them with matte black brackets or raw oak joinery to heighten the contrast and sophistication. It’s the quiet detail that anchors a space with craftsmanship and confidence.


Secure your builds with dependable, class 8.8 strength—add this 50-pack to your cart today.

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