• 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. For head dimension formulas.
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Unit of Measure
Items
Slotted Fillister Head Tapping Screws

Slotted Fillister Head Tapping Screw, with 0.096" Head Dia.
Slotted Fillister Head Tapping Screws

Slotted Fillister Head Tapping Screw, with 0.118" Head Dia.
Slotted Fillister Head Tapping Screws

Slotted Fillister Head Tapping Screw, with 0.140" Head Dia.
Slotted Fillister Head Tapping Screws

Slotted Fillister Head Tapping Screw, with 0.161" Head Dia.
Slotted Fillister Head Tapping Screws

Slotted Fillister Head Tapping Screw, with 0.183" Head Dia.
Manufacturer N/A Industrial Fasteners Institute
Product N/A Tapping Screws
Codes and Standards N/A Abstract of ASME B18.6.4 1998
Unit of Measure N/A English
Nominal Size or Basic Screw Dia. N/A No. 0 N/A No. 1 N/A No. 2 N/A No. 3 N/A No. 4
Nominal Size or Basic Screw Dia. (Decimal) N/A 0.0600 in N/A 0.0730 in N/A 0.0860 in N/A 0.0990 in N/A 0.1120 in
Applicable to Screw Types1 N/A 1
2
3
N/A 1
2
3
N/A 1
2
3
4
N/A 1
2
3
4
N/A 1
2
3
4
Max. Head Dia. (A) N/A 0.096 in N/A 0.118 in N/A 0.140 in N/A 0.161 in N/A 0.183 in
Min. Head Dia. (A) N/A 0.083 in N/A 0.104 in N/A 0.124 in N/A 0.145 in N/A 0.166 in
Max. Head Side Height (H) N/A 0.043 in N/A 0.053 in N/A 0.062 in N/A 0.070 in N/A 0.079 in
Min. Head Side Height (H) N/A 0.038 in N/A 0.045 in N/A 0.053 in N/A 0.061 in N/A 0.069 in
Max. Total Head Height (O) N/A 0.055 in N/A 0.066 in N/A 0.083 in N/A 0.095 in N/A 0.107 in
Min. Total Head Height (O) N/A 0.047 in N/A 0.058 in N/A 0.066 in N/A 0.077 in N/A 0.088 in
Max. Slot Width (J) N/A 0.023 in N/A 0.026 in N/A 0.031 in N/A 0.035 in N/A 0.039 in
Min. Slot Width (J) N/A 0.016 in N/A 0.019 in N/A 0.023 in N/A 0.027 in N/A 0.031 in
Max. Slot Depth (T) N/A 0.025 in N/A 0.031 in N/A 0.037 in N/A 0.043 in N/A 0.048 in
Min. Slot Depth (T) N/A 0.015 in N/A 0.020 in N/A 0.025 in N/A 0.030 in N/A 0.035 in
  • 1 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square
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