#4-40 Phillips Flat Head Machine Screws

High-Quality Stainless Steel Screws

Our #4-40 Phillips Flat Head Machine Screws are made from high-grade 18-8 (304) stainless steel and feature a Phillips drive. These machine screws are designed to sit flush with the surface when installed, providing a clean, professional look. Fully threaded with a blunt end, they are ideal for use in pre-threaded holes or with nuts, offering a secure and precise fastening solution in metal, plastic, and other materials.

Key Features

• Flush Installation: The flat head design allows the screw to sit flush, providing a sleek finish in countersunk applications.
• Corrosion Resistance: Crafted from 18-8 stainless steel, these screws are corrosion-resistant, ideal for both indoor and outdoor use.
• Reliable Strength: The sturdy construction ensures excellent tensile strength, providing reliable fastening in high-stress environments.
• Precision Threading: Fully threaded shank provides excellent grip and alignment in tapped holes or with nuts.
• High-Quality Assurance: Monster Bolts is proud to offer only the highest quality fasteners that meet or exceed industry standards.

Specifications

• Diameter: #4
• Thread Size: 40 TPI – Coarse (Standard) Thread
• Length: Available in various lengths measured from the top of the head to the tip (overall length)
• Drive Type: Phillips #1
• Head Type: Flat Head (Countersunk)
• Material: Stainless Steel 18-8 (304)
• System of Measurement: Inch (Imperial / U.S.)
• Standards Met: ASME B18.6.3-2010 & SAE J82

Usage Information

Machine screws are intended for use in pre-threaded holes or with compatible nuts. They are fully threaded and have a blunt end, making them ideal for fastening small metal parts together with precision. The #4-40 size is commonly used in electronics, small machinery, and precision equipment where a reliable and compact fastener is required.

Ideal Applications

• Electronics and Circuit Boards
• Precision Instruments
• Small Machinery Assembly
• Jewelry and Crafts
• DIY Projects and Repairs

Matching Products

• Nuts: Find matching #4-40 nuts here.
• Washers: Find matching washers here.
• Phillips Drive Tools: Find #1 Phillips head bits here.

Order Yours Today

Perfect for use in electronics, precision instruments, and other detailed projects, our #4-40 Phillips Flat Head Machine Screws offer excellent strength and corrosion resistance. Order today and experience Monster Bolts’ fast shipping and superior customer service!

✔️ Trusted by professionals and hobbyists alike

✔️ High-quality stainless steel for durability and corrosion resistance

✔️ Available in various lengths to suit your needs