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  • Where specifying nominal size in decimals, zeros preceding the decimal and in the fourth decimal place shall be omitted.
  • Tabulated values were determined from the formula for maximum H
  • No tolerance for gaging diameter is given. If the gaging diameter of the gage used differs from the tabulated value, the protrusion will be affected accordingly, and the proper protrusion values shall be recalculated using the formulas shown in Appendix.
Slotted Flat Countersunk Head Cap Screws
Unit of Measure
Items Slotted Flat Countersunk Head Cap Screws
SFCHCS02500XXX
Slotted Flat Countersunk Head Cap Screw, with 0.2500" Body Dia.
Slotted Flat Countersunk Head Cap Screws
SFCHCS03125XXX
Slotted Flat Countersunk Head Cap Screw, with 0.3125" Body Dia.
Slotted Flat Countersunk Head Cap Screws
SFCHCS03750XXX
Slotted Flat Countersunk Head Cap Screw, with 0.3750" Body Dia.
Slotted Flat Countersunk Head Cap Screws
SFCHCS04375XXX
Slotted Flat Countersunk Head Cap Screw, with 0.4375" Body Dia.
Slotted Flat Countersunk Head Cap Screws
SFCHCS05000XXX
Slotted Flat Countersunk Head Cap Screw, with 0.5000" Body Dia.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Slotted Cap Screws
Codes and Standards N/A ASME B18.6.2 1998
Unit of Measure N/A English
Nominal Size or Basic Screw Dia. N/A 1/4 in N/A 5/16 in N/A 3/8 in N/A 7/16 in N/A 1/2 in
Nominal Size or Basic Screw Dia. (Decimal) N/A 0.2500 in N/A 0.3125 in N/A 0.3750 in N/A 0.4375 in N/A 0.5000 in
Max. Body Dia. (E) N/A 0.2500 in N/A 0.3125 in N/A 0.3750 in N/A 0.4375 in N/A 0.5000 in
Min. Body Dia. (E) N/A 0.2450 in N/A 0.3070 in N/A 0.3690 in N/A 0.4310 in N/A 0.4930 in
Max. Edge Sharp Head Dia. (A) N/A 0.500 in N/A 0.625 in N/A 0.750 in N/A 0.812 in N/A 0.875 in
Min. Edge Rounded or Flat Head Dia. (A) N/A 0.452 in N/A 0.567 in N/A 0.682 in N/A 0.736 in N/A 0.791 in
Ref. Head Height (H) N/A 0.140 in N/A 0.177 in N/A 0.210 in N/A 0.210 in N/A 0.210 in
Max. Slot Width (J) N/A 0.075 in N/A 0.084 in N/A 0.094 in N/A 0.094 in N/A 0.106 in
Min. Slot Width (J) N/A 0.064 in N/A 0.072 in N/A 0.081 in N/A 0.081 in N/A 0.091 in
Max. Slot Depth (T) N/A 0.068 in N/A 0.086 in N/A 0.103 in N/A 0.103 in N/A 0.103 in
Min. Slot Depth (T) N/A 0.045 in N/A 0.057 in N/A 0.068 in N/A 0.068 in N/A 0.068 in
Max. Fillet Radius (U) N/A 0.100 in N/A 0.125 in N/A 0.150 in N/A 0.175 in N/A 0.200 in
Max. Protrusion Above Gaging Dia. (F) N/A 0.046 in N/A 0.053 in N/A 0.060 in N/A 0.065 in N/A 0.071 in
Min. Protrusion Above Gaging Dia. (F) N/A 0.030 in N/A 0.035 in N/A 0.040 in N/A 0.044 in N/A 0.049 in
Gaging Dia. (G) N/A 0.424 in N/A 0.538 in N/A 0.651 in N/A 0.703 in N/A 0.756 in