• Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
  • 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, Appendix; and Types D, F, G, and T thread cutting.
  • A slight rounding of the edges at periphery of head shall be permissible, provided the diameter of the bearing circle is equal to no less than 90% of the specified minimum head diameter.
  • Head dimensions not shown are the same as slotted heads.
  • Screw sizes No. 0 and No 1 are impractical to gage.
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Item #

Description

Type

Nominal Size or Basic Screw Dia.

Ref. (M)

Ref. (T)

Ref. (N)

Driver Size

N/A Type II Cross Recessed Fillister Head Tapping Screw, 0.5000" Nominal Dia. N/A Type II N/A 1/2 in N/A 0.547 in N/A 0.327 in N/A 0.091 in N/A Point Same on all Drivers
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