Grade 12.9 Metric Fine Thread Hexagon Bolts – M10 M12 M14 M16 M18, Black Steel, Hex Key Drive, Lengths 20mm-200mm

These are heavy-duty metric hex bolts — fine thread, grade 12.9 black steel.

Sizes run from M10 all the way up to M18, with lengths from 20mm to 200mm.

Hex-key drive, hex head.

Unbranded but made to proper metric specs.

No MPN, but you’re buying the steel, not the sticker.

Fine thread means better vibration resistance and more clamping force.

If you’re building jigs, machinery, or just stocking the shop, these’ll do the job.

New, ready to ship.

Pick your size and length.