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Accurate Screw Machine

745B - 4-40 UNC2A Brass Knurled Low Profile w/ Collar Head Captive Screw / Assembly

Configurable Knurled Low Profile w/ Collar 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 745B
Drive Type Slotted
End Diameter 0.078 in
End Length 0.125 in
End Type Lead Point
Finish None
Head Diameter 0.75 in
Head Height 0.25 in
Knurl Pitch 40 deg
Length L 0.353 in
Material Brass
Max L 3 in
SKU 745B
Screw Head Type Knurled Low Profile
Shaft Diameter 0.235 in
Shaft Length - Threaded 0.375 in
Slot Depth 0.125 in
Slot Width 0.0625 in
Thread Size 5/16-18
Specs (in metric)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 745B
Drive Type Slotted
End Diameter 1.98 mm
End Length 3.18 mm
End Type Lead Point
Finish None
Head Diameter 19.05 mm
Head Height 6.35 mm
Knurl Pitch 40 deg
Length L 8.97 mm
Material Brass
Max L 76.2 mm
SKU 745B
Screw Head Type Knurled Low Profile
Shaft Diameter 5.97 mm
Shaft Length - Threaded 9.53 mm
Slot Depth 3.18 mm
Slot Width 1.59 mm
Thread Size 5/16-18
Introducing the 745B Captive Screws, a top-of-the-line solution for secure fastening in various applications. Crafted from high-quality brass, these screws offer exceptional strength and durability while maintaining a sleek and professional appearance. The absence of any finish on these screws enhances their natural brass beauty, making them stand out in any assembly.

These captive screws are designed for convenience, featuring a unique design that prevents them from becoming fully separated from the attached panel or component. This design not only ensures easy installation but also reduces the risk of losing screws during maintenance or repairs.

The 745B Captive Screws are a versatile choice for a wide range of industries including electronics, aerospace, automotive, and more. Their reliable performance and long-lasting quality make them ideal for applications where security and stability are paramount.

With their precision engineering and brass construction, these captive screws offer excellent corrosion resistance, making them suitable for both indoor and outdoor use. Whether you need to secure panels, covers, or other components, the 745B Captive Screws provide a reliable and professional solution.

Upgrade your fastening solutions with the 745B Captive Screws - the perfect combination of durability, security, and functionality. Trust in the strength of brass and the innovative design of captive screws to enhance the performance and aesthetics of your assemblies. Experience the difference with these high-quality screws designed to meet your fastening needs with precision and reliability.

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