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Accurate Screw Machine

779B - 4-40 UNC2A Brass Countersunk Round Head Captive Screw / Assembly

Configurable Countersunk Round head Slotted Brass captive screws with 4-40 UNC2A threads.

Download CAD
Unit System
Specs (in standard)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 779B
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 0.25 in
Head Height 0.25 in
Length L 0.226 in
Material Stainless Steel
Max L 3 in
SKU 779B
Screw Head Type Knurled
Shaft Diameter 0.078 in
Shaft Length - Threaded 0.125 in
Slot Depth 0.0781 in
Slot Width 0.0469 in
Thread Size 4-40
Specs (in metric)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 779B
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 6.35 mm
Head Height 6.35 mm
Length L 5.74 mm
Material Stainless Steel
Max L 76.2 mm
SKU 779B
Screw Head Type Knurled
Shaft Diameter 1.98 mm
Shaft Length - Threaded 3.18 mm
Slot Depth 1.98 mm
Slot Width 1.19 mm
Thread Size 4-40
Introducing the 779B Captive Screws, a versatile and reliable solution for fastening applications!

Crafted from high-quality brass, these Captive Screws offer exceptional durability and corrosion resistance, ensuring longevity and performance in various environments. The brass material not only provides strength but also adds a sleek and professional look to your assemblies.

The 779B Captive Screws come with a sleek and polished finish, enhancing their appearance and making them perfect for visible installations where aesthetics matter. Designed for convenience and ease of use, these Captive Screws feature a unique captive design that prevents loss or misplacement during assembly and disassembly. This innovative feature streamlines the installation process, saving you time and effort while ensuring secure fastening.

Whether you are working on electronics, machinery, or other applications, the 779B Captive Screws offer a reliable solution for securing components in place. Their precision engineering and high-quality materials make them ideal for demanding industrial environments where reliability is crucial.

Upgrade your fastening solutions with the 779B Captive Screws - the perfect combination of functionality, durability, and aesthetics. Experience the peace of mind that comes with using top-quality fasteners designed to meet your most demanding requirements. Elevate your projects with the 779B Captive Screws today!

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