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Sales Systems Limited Products and Services > Fasteners Reference Guide > Bolts / Screws > Tapping Screws > Type I Cross Recessed Oval Countersunk Trim Head Tapping Screws > Item # item-3034  
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Item # item-3034, Type I Long Screw with Shoulder, with 0.384" Recess 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

Manufacturer

Manufacturer

Industrial Fasteners Institute


Specifications

Product

Tapping Screws

Unit of Measure

English

Type

Type I Long Screw with Shoulder

Nominal Size or Basic Screw Dia.

3/8 in

Nominal Size or Basic Screw Dia. (Decimal)

0.3750 in

Head Size

5/16 in

Applicable to Screw Types1

Ref. Recess Dia. (M)

0.384 in

Ref. Recess Depth (T)

0.226 in

Ref. Recess Width (N)

0.065 in

Driver Size

4

Max. Recess Penetration Gaging Depth

0.218 in

Min. Recess Penetration Gaging Depth

0.194 in

Max. Protrusion Above Gaging Dia. (F)

0.155 in

Min. Protrusion Above Gaging Dia. (F)

0.117 in

Gaging Dia. (G)

0.539 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
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