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Accurate Screw Machine

781B - 4-48 UNF2A Brass Countersunk Round Head Captive Screw / Assembly

Must be between 0.226 - 3 in

Configurable Countersunk Round head Slotted Brass captive screws with 4-48 UNF2A threads.

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 781B
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 0.166 in
Head Height 0.088 in
Length L 0.226 in
Material Brass
Max Head Diameter 0.183 in
Max Head Height 0.107 in
Max L 3 in
Max Slot Depth 0.048 in
Max Slot Width 0.039 in
Model Number 781
SKU 781B
Screw Head Type Countersunk Round
Shaft Diameter 0.078 in
Shaft Length - Threaded 0.1563 in
Slot Depth 0.035 in
Slot Width 0.031 in
Thread Size 4-48 UNF2A
Specs (in metric)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 781B
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 4.22 mm
Head Height 2.24 mm
Length L 5.74 mm
Material Brass
Max Head Diameter 4.65 mm
Max Head Height 2.72 mm
Max L 76.2 mm
Max Slot Depth 1.22 mm
Max Slot Width 0.99 mm
Model Number 781
SKU 781B
Screw Head Type Countersunk Round
Shaft Diameter 1.98 mm
Shaft Length - Threaded 3.97 mm
Slot Depth 0.89 mm
Slot Width 0.79 mm
Thread Size 4-48 UNF2A
Introducing the 781B Captive Screws, a reliable solution for securing components in place with ease and efficiency. These screws, crafted from high-quality brass, boast durability and corrosion resistance, making them ideal for a wide range of applications.

The 781B Captive Screws are designed with precision engineering to ensure a secure fit each time they are fastened. The brass material not only provides strength but also offers a sleek and professional look. These screws are finished with a smooth surface, giving them a polished appearance.

Whether used in electronic enclosures, panel fastening, or other industrial settings, the 781B Captive Screws excel in holding power and longevity. Their captive design prevents loss or misplacement during maintenance or assembly, saving time and effort in the long run.

The absence of a finish on these screws adds to their industrial appeal, maintaining a minimalistic and functional aesthetic. The brass material further enhances their reliability in various environments, including those with exposure to elements like moisture or chemicals.

In conclusion, the 781B Captive Screws in brass offer a blend of strength, durability, and aesthetic appeal. Their innovative design and quality material make them a standout choice for securing components securely in place. Trust the 781B Captive Screws to provide unparalleled performance and peace of mind in your projects.

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