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Sales Systems Limited Products and Services > Fasteners > Bolts / Screws > Tapping Screws > Slotted Flat Countersunk Head Tapping Screws > Item # SFCHTS03720XXX  
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Item # SFCHTS03720XXX, Slotted Flat Countersunk Head Tapping Screw, with 0.711" Head Dia.

Applicable to screw types as indicated by code symbols.
  • Type A thread forming, except for short lengths.

Manufacturer  · Specifications  · Codes and Standards



Industrial Fasteners Institute



Tapping Screws

Unit of Measure


Nominal Size or Basic Screw Dia.

No. 24

Nominal Size or Basic Screw Dia. (Decimal)

0.3720 in

Applicable to Screw Types1

Length for Types AB and A (L)

1 in

Max. Head Dia. (A)

0.711 in

Min. Head Dia. (A)

0.664 in

Ref. Head Height (H)

0.228 in

Max. Slot Width (J)

0.094 in

Min. Slot Width (J)

0.081 in

Max. Slot Depth (T)

0.105 in

Min. Slot Depth (T)

0.069 in

Max. Protrusion Above Gaging Dia. (F)

0.065 in

Min. Protrusion Above Gaging Dia. (F)

0.039 in

Gaging Dia. (G)

0.648 in
1 1 = Circle, 2 = Diamond, 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