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4-40UNC CSK Socket Screws Stainless Steel
Description
Countersunk Socket Screws – 4-40 UNC – Stainless Steel
4-40 UNC Stainless Steel Countersunk Socket Screws are precision fasteners designed for flush-mounted applications in light-duty and small assembly work. The countersunk head sits level with the material surface for a clean, professional finish, while the internal hex (Allen) drive allows controlled torque application and secure installation.
Manufactured with a 4-40 Unified National Coarse (UNC) thread (No. 4 gauge, 40 TPI), these screws are compatible with matching 4-40 UNC nuts and threaded components. Commonly used in electronics, instrumentation, machinery, and marine fittings where compact, reliable fastening is required.
Stainless steel construction provides excellent corrosion resistance, making these screws suitable for indoor, outdoor, and coastal environments.
Key Features:
Size: 4-40 UNC (No. 4 gauge, 40 TPI)
Head Type: Countersunk (flush finish)
Drive Type: Internal hex (Allen)
Thread Type: UNC
Material: Stainless Steel
Flush mounting for smooth finished surfaces
Suitable for electronics, instrumentation, marine hardware, machinery, and general engineering
4-40 UNC stainless steel countersunk socket screws deliver dependable precision fastening with corrosion resistance and a professional flush finish.
