#4-40 Flat Head Socket Cap Screws

High-Strength Alloy Steel with Thermal Black Oxide Finish

Optimize your projects with our reliable #4-40 Flat Head Socket Cap Screws, crafted from high-strength alloy steel and finished with a thermal black oxide coating. These screws offer exceptional tensile strength and a sleek black appearance, making them perfect for applications in electronics, RC cars, 3D printing, and other precision devices where small screws are essential.

The flat head design allows for a flush finish in countersunk applications, providing a smooth and professional appearance. The hex drive ensures secure fastening, even in tight spaces and high-stress environments.

Note: Length is measured from the top of the head (countersunk length).

Key Features

• High Strength: Made from premium alloy steel to withstand demanding applications.
• Thermal Black Oxide Coating: Provides mild corrosion resistance and a sleek black finish.
• Ideal for Small Applications: Perfect for electronics, RC cars, 3D printing, and other projects requiring small screws.
• Flush Installation: Flat head design ideal for countersunk applications, ensuring a smooth surface.
• Easy Installation: Hex drive compatible with a 1/16" hex key for quick and secure fastening. Need a 1/16" Hex Key? Get one here!

Specifications

• Diameter: #4
• Thread Size: 40 TPI - Coarse (Standard) Thread
• Length: Measured from the top of the head
• Drive: 1/16" Hex Key (Allen Wrench)
• Material: Alloy Steel with Thermal Black Oxide Coating
• Standards: ASTM F835 - 82° Flat Head (Standard)

Matching Products

• Matching Nuts: #4-40 Nuts - Available here
• Matching Washers: #4 Washers - Available here

Order Yours Today

Don't compromise on quality and reliability. Choose Monster Bolts for your #4-40 Flat Head Socket Cap Screws with a thermal black oxide finish. Ideal for precision applications in electronics, RC cars, 3D printing, and more. Order now to enjoy fast shipping and outstanding customer service from Monster Bolts, the preferred choice of professionals worldwide!

Why Choose Monster Bolts?

• ✔️ Trusted by professionals globally
• ✔️ Compliant with ASTM F835 standards
• ✔️ Fast shipping and excellent customer service

Frequently Asked Questions

• Q: What is thermal black oxide coating?
  A: Thermal black oxide coating provides mild corrosion resistance and gives the screws a sleek black finish, suitable for indoor use or light outdoor exposure.
• Q: Are these screws suitable for electronics and 3D printing?
  A: Yes, the small size and high strength make them ideal for electronics, 3D printing, RC cars, and other precision applications.
• Q: Do you offer bulk pricing?
  A: Absolutely! We offer competitive pricing for bulk orders. Please contact our sales team for more details.