16 Pack M4 X 150mm Hex Socket Head Cap Screws Bolts With Allen Drive Partially Threaded Design Built Tough From Premium 12.9 Grade Carbon Steel Offering Knockout Strength And A Sleek Black Oxide Finish For Serious Heavy Duty Work

Heavy duty M4 x 150mm hex socket head cap screws
✔️ Pack of 16, 12.9 grade steel, black oxide finish, M4 x 150mm bolts

A compact set of sixteen m4 x 150mm partially threaded hex bolts built for reliable mechanical fastening. Shop technicians and home builders use these for chassis mounting, furniture joints, and machinery assembly where precise grip prevents slipping.

✅ Thread diameter measures 4mm with a 0.7mm pitch specification
✅ Total length reaches 150mm while the stud covers 20mm
✅ Cylindrical head spans 7mm wide and stands 4mm tall
✅ Wrench slot requires a 3mm allen key for controlled torque
✅ Dark oxide coating blocks rust during heavy duty work

💡 How do partially threaded 12.9 grade M4 bolts perform on shaking equipment?
- The solid shank area acts like a metal peg that stops stripping under heavy turning pressure
- Rock hard carbon build keeps fasteners snug even when motors rumble around
- Clean metric fitting is a handy match for standard shop kits and factory setups

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