Sales Systems Ltd. - Slotted Undercut Flat Countersunk Head Tapping Screws

Applicable to screw types as indicated by code symbols.
Type AB thread forming.
Type C thread forming; and Types D, F, G, and T thread cutting.
Where specifying nominal size in decimals, zeros preceding decimal and in the fourth decimal place shall be omitted.
Screws of longer lengths shall have head heights.
No tolerance for gaging diameter is given. If the gaging diameter of the gage used differs from tabulated value, the protrusion will be affected accordingly and the proper protrusion values must be recalculated using the formulas shown in Appendix.

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Unit of Measure

Items	SUFCHTS00600XXX Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.112" Head Dia.	SUFCHTS00730XXX Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.137" Head Dia.	SUFCHTS00860XXX Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.162" Head Dia.	SUFCHTS00990XXX Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.187" Head Dia.	SUFCHTS01120XXX Slotted Undercut Flat Countersunk Head Tapping Screw, with 0.212" 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 3	N/A 1 3	N/A 1 3 4	N/A 1 3 4	N/A 1 3 4
Length for Types AB and A (L)	N/A 3/16 in	N/A 3/16 in	N/A 3/16 in	N/A 7/32 in	N/A 1/4 in
Length for Other Types (L_T)	N/A 1/8 in	N/A 5/32 in	N/A 3/16 in	N/A 7/32 in	N/A 1/4 in
Max. Head Dia. (A)	N/A 0.112 in	N/A 0.137 in	N/A 0.162 in	N/A 0.187 in	N/A 0.212 in
Min. Head Dia. (A)	N/A 0.096 in	N/A 0.120 in	N/A 0.144 in	N/A 0.167 in	N/A 0.191 in
Max. Head Height (H)	N/A 0.025 in	N/A 0.031 in	N/A 0.036 in	N/A 0.042 in	N/A 0.047 in
Min. Head Height (H)	N/A 0.018 in	N/A 0.023 in	N/A 0.028 in	N/A 0.033 in	N/A 0.038 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 0.011 in	N/A 0.014 in	N/A 0.016 in	N/A 0.019 in	N/A 0.022 in
Min. Slot Depth (T)	N/A 0.007 in	N/A 0.009 in	N/A 0.011 in	N/A 0.012 in	N/A 0.014 in
Max. Protrusion Above Gaging Dia. (F)	N/A	N/A	N/A 0.029 in	N/A 0.031 in	N/A 0.032 in
Min. Protrusion Above Gaging Dia. (F)	N/A	N/A	N/A 0.017 in	N/A 0.018 in	N/A 0.019 in
Gaging Dia. (G)	N/A	N/A	N/A 0.124 in	N/A 0.148 in	N/A 0.172 in
¹ 1 = Circle, 3 = Triangle, 4 = Square

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