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Accurate Screw Machine

779A - 4-40 UNC2A Aluminum Countersunk Round Head Captive Screw / Assembly

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

Download CAD
Unit System
Specs (in standard)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 779A
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 0.25 in
Head Height 0.25 in
Length L 0.226 in
Material Steel
Max L 3 in
SKU 779A
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 779A
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 6.35 mm
Head Height 6.35 mm
Length L 5.74 mm
Material Steel
Max L 76.2 mm
SKU 779A
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 779A Captive Screws from our premium collection designed to meet your exacting standards. These screws are meticulously crafted from high-grade aluminum, ensuring durability and reliability in a wide range of applications.

The 779A Captive Screws come in a sleek design with a finish that leaves a lasting impression. The absence of a finish gives them a raw, industrial look, perfect for machinery and equipment where aesthetics are just as important as functionality.

These captive screws are engineered to provide a secure fastening solution while preventing loss or damage. The captive feature ensures that the screw remains attached even when unfastened, making maintenance tasks a breeze without the risk of misplacement.

Crafted from lightweight yet sturdy aluminum, these screws offer a high strength-to-weight ratio, making them ideal for applications where reducing weight is crucial without compromising on durability. The material's corrosion-resistant properties make these screws suitable for indoor and outdoor use, adding to their versatility.

The 779A Captive Screws are designed for easy installation, saving you time and effort during assembly or disassembly processes. The precise engineering guarantees a snug fit and reliable performance, giving you peace of mind that your components are securely fastened.

Whether you are working on electronic enclosures, industrial machinery, or consumer products, the 779A Captive Screws deliver exceptional performance and quality. Elevate your projects with these premium aluminum screws that combine functionality with a touch of industrial sophistication.

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