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Sales Systems Limited Products and Services > Fasteners > Bolts / Screws > Tapping Screws > Slotted Undercut Flat Countersunk Head Tapping Screws > Item # SUFCHTS03750XXX  
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Item # SUFCHTS03750XXX, Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.717" Head Dia.

Applicable to screw types as indicated by code symbols.
  • Types B and BP thread forming and Types BF and BT thread cutting.
  • Type C thread forming and Types D, F, G, and T thread cutting.

Manufacturer  · Specifications  · Codes and Standards



Industrial Fasteners Institute



Tapping Screws

Unit of Measure


Nominal Size or Basic Screw Dia.

3/8 in

Nominal Size or Basic Screw Dia. (Decimal)

0.3750 in

Applicable to Screw Types1

Length for Other Types (LT)

5/8 in

Max. Head Dia. (A)

0.717 in

Min. Head Dia. (A)

0.670 in

Max. Head Height (H)

0.161 in

Min. Head Height (H)

0.140 in

Max. Slot Width (J)

0.094 in

Min. Slot Width (J)

0.081 in

Max. Slot Depth (T)

0.075 in

Min. Slot Depth (T)

0.049 in

Max. Protrusion Above Gaging Dia. (F)

0.065 in

Min. Protrusion Above Gaging Dia. (F)

0.039 in

Gaging Dia. (G)

0.653 in
1 1 = Circle, 3 = Triangle, 4 = Square

Codes and Standards

Codes and Standards

Abstract of ASME B18.6.4 1998


Type Designations for Tapping Screws and Metallic Drive Screws
(PDF, 206KB)

Distributor of Industry Standard and Military Specification Threaded Fasteners