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Accurate Screw Machine

779S - 4-40 UNC2A Steel Countersunk Round Head Captive Screw / Assembly

Must be between 0.226 - 3 in

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

Unit System
View Spec Sheet
Specs (in standard)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 779S
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 0.166 in
Head Height 0.088 in
Length L 0.226 in
Material Steel
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 779
SKU 779S
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 4-40 UNC2A
Specs (in metric)
Label Value
Assembly Configurable
Brand Accurate Screw
Display Name 779S
Drive Type Slotted
End Type Standard
Finish None
Head Diameter 4.22 mm
Head Height 2.24 mm
Length L 5.74 mm
Material Steel
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 779
SKU 779S
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 4-40 UNC2A

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