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Sales Systems Limited Products and Services > Fasteners > Bolts / Screws > Tapping Screws > Slotted Undercut Flat Countersunk Head Tapping Screws > Item # SUFCHTS00860XXX  
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Item # SUFCHTS00860XXX, Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.162" Head Dia.

Applicable to screw types as indicated by code symbols.
  • Type AB thread forming.
  • 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.

No. 2

Nominal Size or Basic Screw Dia. (Decimal)

0.0860 in

Applicable to Screw Types1

Length for Types AB and A (L)

3/16 in

Length for Other Types (LT)

3/16 in

Max. Head Dia. (A)

0.162 in

Min. Head Dia. (A)

0.144 in

Max. Head Height (H)

0.036 in

Min. Head Height (H)

0.028 in

Max. Slot Width (J)

0.031 in

Min. Slot Width (J)

0.023 in

Max. Slot Depth (T)

0.016 in

Min. Slot Depth (T)

0.011 in

Max. Protrusion Above Gaging Dia. (F)

0.029 in

Min. Protrusion Above Gaging Dia. (F)

0.017 in

Gaging Dia. (G)

0.124 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