7/8"-9 X 4-1/2" Machine Screws | Flat Head | Slotted Drive | Plain Steel (15/Pkg.)

Secure, flush fastenings with our Machine Screws Slotted Flat Plain Steel 7/8-9 x 4-1/2. Built from plain steel for affordability and ease of machining, these slotted machine screws are ideal for metal-to-metal assemblies where a flat, countersunk head is required for a smooth, finished appearance.

Specifications

• Size: 7/8-9 x 4-1/2 inches (7/8 inch diameter, 9 threads per inch, 4-1/2 inch length)
• Drive Type: Slotted
• Head Style: Flat (countersunk) head for flush installation
• Material: Plain steel (carbon steel)
• Finish: Uncoated

Key Benefits

• Strong, reliable fastening suitable for a wide range of metalworking and hardware projects
• Slotted drive offers compatibility with traditional screwdrivers and power bits
• Flat head provides a flush surface for panels, enclosures, and machinery assemblies
• Plain steel design keeps costs lower while delivering durable performance in indoor applications

Applications

Perfect for metal-to-metal assemblies in machinery, equipment, automotive components, enclosures, and general hardware projects where a flush, secure screw is desired.

Installation Tips

• Ensure the 9 TPI thread matches your mating part; pre-drill a suitable pilot hole if needed for the material.
• Use appropriate lubrication or thread lubricant to ease driving and prevent galling.
• For outdoor or damp environments, consider a coated or stainless option to improve corrosion resistance.

Enhance your fastener toolkit with these flat, slotted machine screws in the 7/8-9 x 4-1/2 size for dependable, flush installations across your projects.