Machine screws are straight shank parts designed to bind metal to metal by going through an opening pre-tapped to form the same configuration as the threads of the machine screw. The thread runs the entire length of the shaft. Most machine screws do not have a point, although a header point model does exist.
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MACHINE SCREW, BINDER UNDERCUT SLOTTED, ZINC CR+3 (INCH)

#4-40 X 1/4 MACHINE SCREW SLOTTED BINDER HEAD UNDERCUT ZINC
Web Price $569.10
MACHINE SCREW, BINDER UNDERCUT SLOTTED, ZINC CR+3 (INCH)

#4-40 X 5/16 MACHINE SCREW SLOTTED BINDER HEAD UNDERCUT ZINC
Web Price $150.68
MACHINE SCREW, BINDER UNDERCUT SLOTTED, ZINC CR+3 (INCH)

#4-40 X 5/16 MACHINE SCREW SLOTTED BINDER HEAD UNDERCUT ZINC
Web Price $17.17
MACHINE SCREW, BINDER UNDERCUT SLOTTED, ZINC CR+3 (INCH)

#4-40 X 3/8 MACHINE SCREW SLOTTED BINDER HEAD UNDERCUT ZINC
Web Price $382.59
MACHINE SCREW, BINDER UNDERCUT SLOTTED, ZINC CR+3 (INCH)

#4-40 X 3/8 MACHINE SCREW SLOTTED BINDER HEAD UNDERCUT ZINC
Web Price $18.19
Diameter N/A #4
Pitch N/A Coarse
Length N/A 1/4 N/A 5/16 N/A 5/16 N/A 3/8 N/A 3/8
Material N/A Carbon Steel
Finish N/A Zinc Plated
Package Quantity N/A 40000 N/A 10000 N/A 100 N/A 25000 N/A 100