#4-40 X 5/8" Socket Cap Screws | Flat Head Hex Socket Drive | 316 Stainless Steel (100 / Pkg.)

Cap Screws Flat Socket 316 Stainless 4/40 X 5/8 are precision-engineered fasteners designed for high-stress assemblies where a clean appearance and strong hold are essential. Made from 316 stainless steel, these flat socket cap screws deliver superior corrosion resistance and reliable performance in challenging environments.

Key Benefits

• Corrosion-Resistant — 316 stainless steel withstands moisture, salt spray, and chemicals, extending service life in marine, outdoor, and industrial settings.
• Internal Hex Drive — Flat socket head provides a low-profile, flush finish with an internal hex socket for secure tightening.
• Reliable Torque — Precision threads ensure smooth engagement and repeatable clamping force.
• Low-Profile Head — Flat socket cap screws sit flush or slightly below the surface for clean assemblies.
• Size — 4/40 thread with 5/8 inch length, a common miniature fastener in electronics, instrumentation, and hobby projects.

Specifications

• Material: 316 Stainless Steel
• Thread Size: 4-40
• Length: 5/8 in
• Drive Type: Internal Hex (Allen) Socket
• Head Style: Cap Screw, Flat Socket

Whether you are building precision equipment, marine hardware, or intricate machinery, these cap screws provide a secure, corrosion-resistant fastening solution that stands up to harsh conditions. Add Cap Screws Flat Socket 316 Stainless 4/40 X 5/8 to your toolkit for dependable, long-lasting performance.