Heavy Duty Size 4-40 Button Head Socket Cap Screws One Eighth Inch Long Top Notch Alloy Steel Black Oxide Coating Crisp Threads And Rock Solid Grip Perfect For Any Garage Project Or Custom Rig You Are Building Right Now

10 Pack #4-40 Button Head Screws 1/8 Inch Black Steel Set
✔️ #4-40 Thread 1/8 Length 12.9 Grade Alloy Steel Hex Key Drive

This pack holds ten size four forty coarse thread cap screws designed for heavy mechanical builds and workshop repairs. These flush mount fasteners secure machinery housings, custom fabrication frames, and automotive components where clean head profiles matter. The thermal treated alloy material delivers consistent clamping torque across high stress applications.

✅ Diameter matches standard four gauge tap drill sizing requirements
✅ Thread pitch runs forty teeth per inch for fast assembly speeds
✅ Drive accepts a common one sixteenths hex wrench for tightening
✅ Surface gets a hard black oxidation layer to resist shop grime
✅ Pack contains ten pieces ready for bench work and frame builds

💡 What is a hex socket cap screw typically used for high stress suspension mounting?
This handy fastener locks steel plates and aluminum mounts inside tight chassis frames. You grab clean torque without protruding hardware sticking out. Standard allen drives let you swap bolts quickly when tweaking your machine.
- High grade alloy cores handle vibration and prevent stripping under load
- High yield strength keeps clamp force steady over rough roads
- Protective oxide coating blocks rust while parts sit on shelf racks

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