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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Cross Recessed Flat Countersunk Trim Head Tapping Screws > Item # item-2804  
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Item # item-2804, Cross Recessed Flat Countersunk Trim Head Tapping Screw, with 0.412" 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

Manufacturer

Manufacturer
Industrial Fasteners Institute


Specifications

Product
Tapping Screws

Unit of Measure
English

Nominal Size or Basic Screw Dia.
5/16 in

Nominal Size or Basic Screw Dia. (Decimal)
0.3125 in

Head Size
12

Applicable to Screw Types1

Min. Shoulder Dia. for Other Types (E)
0.302 in

Max. Head Dia. (A)
0.412 in

Min. Head Dia. (A)
0.380 in

Ref. Head Height (H)
0.075 in

Max. Protrusion Above Gaging Dia. (F)
0.045 in

Min. Protrusion Above Gaging Dia. (F)
0.027 in

Gaging Dia. (G)
0.362 in
1 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square


Codes and Standards

Codes and Standards
Abstract of ASME B18.6.4 1998


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


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