Size 6 40 X 1/4 Inch Button Head Socket Cap Screws, Rock Solid Alloy Steel, Top Shelf Black Oxide Coating, Badass 12.9 Grade Strength, Includes 50 Pieces For Your Next Rig Upgrade

Grade 12.9 button head socket cap screws set
✔️ Alloy steel button head screws 5/64 inch hex drive pack of 50

This pack of fifty size 6-40 button head socket cap screws relies on 12.9 grade alloy steel with a thermal black oxide finish. Folks grab these handy fasteners for bike frames, engine panels, and custom metalwork whenever tight alignment matters.

✅ Nominal diameter measures #6 across the external threads
✅ Cuts forty threads per inch in the UNF fine pattern for tight engagement
✅ Uses a five sixty fourth inch Allen slot that fits standard hex keys

💡 Why are fine pitched button head socket screws preferred for precision machinery assemblies

- These handy fasteners bite deep into thin tapped holes to stop bolts from spinning loose
- Builders love them because the low profile sits flush against tight chassis brackets
- Heat treated cores handle massive torque pulls without shearing off under heavy loads
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