Heavy Duty Button Head Socket Cap Screws 2 56 By 3 16 Inch 100 Pcs Solid Alloy Steel Build With Savage Black Oxide Coat For Badass Rust Blocking And Quick Allen Hex Job Setup

Heavy duty black oxide button head bolts 100 piece lot
✔️ 5mm x 0.9mm alloy steel hex screws 100 piece set robust

These heavy duty button head socket cap screws deliver reliable fastening power for machine frames, truck racks, and shop jigs where a low profile proves handy. Built from solid alloy steel and coated in rugged black oxide, they resist corrosion and stand up to daily wear while keeping bolt heads flush against surfaces. Thread depth holds strong under vibration thanks to full engagement along the barrel. Standard sizing fits most DIY rigs and industrial assemblies alike.

✅ Thread pitch measures 0.086 inches with fifty six threads per inch
✅ Button head diameter spans 0.164 inches for broad surface contact
✅ Recess depth handles standard quarter ten allen hex wrenches
✅ Low profile design distributes load evenly without snagging

💡 How does black oxide plating improve hex head screw lifespan compared to plain steel?
This finish boosts durability by filling microscopic pores that trap moisture and grit.
* Phosphate conversion creates a hardened barrier against road salt and rain
* Oil soaked treatment cuts down friction when you punch in tight spots

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