• A light rounding of the edges at the periphery of the head shall be permissible provided the diameter of the bearing circle is equal to no less than 90 percent of the specified minimum head diameter.
  • Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted.
  • Formulas for head dimensions are given in Appendix.
Unit of Measure

Manufacturer

Manufacturer

N/A Industrial Fasteners Institute

Specifications

Product

N/A Slotted Cap Screws

Unit of Measure

N/A English

Nominal Size or Basic Screw Dia.

N/A 1/4 in
Nominal Size or Basic Screw Dia. (Decimal)1 N/A 0.2500 in

Max. Body Dia. (E)

N/A 0.2500 in

Min. Body Dia. (E)

N/A 0.2450 in

Max. Head Dia. (A)

N/A 0.375 in

Min. Head Dia. (A)

N/A 0.363 in

Max. Head Side Height (H)

N/A 0.172 in

Min. Head Side Height (H)

N/A 0.157 in

Max. Total Head Height (O)

N/A 0.216 in

Min. Total Head Height (O)

N/A 0.194 in

Max. Slot Width (J)

N/A 0.075 in

Min. Slot Width (J)

N/A 0.064 in

Max. Slot Depth (T)

N/A 0.097 in

Min. Slot Depth (T)

N/A 0.077 in

Max. Fillet Radius (U)

N/A 0.031 in

Min. Fillet Radius (U)

N/A 0.016 in

Codes and Standards

Codes and Standards

N/A ASME B18.6.2 1998
  • 1 Where specifying nominal size in decimals, zeros preceding and in the fourth decimal, place shall be omitted.
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