[10 PKG] Square Head Set Screws Case Hardened Steel Cup Point 7/8-9 X 4 1/2

Our Square Head Set Screws in case-hardened steel feature a cup point for a secure bite and minimal surface damage. Engineered for strength and reliability, these screws are ideal for high-pressure fixtures, machinery, and assemblies where a flush, locking fit is essential. The 7/8-9 thread and 4 1/2 inch length provide a robust option for demanding applications.

Key specifications

• Material: Case-hardened steel
• Head style: Square head
• Point type: Cup point
• Thread size: 7/8-9
• Length: 4 1/2 in
• Finish: Case hardened

Why choose these set screws?

Designed to resist loosening under vibration and load, the square head design provides solid engagement with traditional tools, while the cup point concentrates pressure for secure seating without excessive indentation. The case-hardened steel construction offers exceptional durability in tough manufacturing environments.

Common applications

• Machine tool setups and fixtures
• Jig and fixture locking
• Industrial assemblies and equipment
• Workholding and precise alignment tasks