Sales Systems Ltd. - Type II Cross Recessed Oval Countersunk Trim Head Tapping Screws

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.
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.

This type of recess consists of two intersecting slots with parallel sides converging to a slightly truncated apex at bottom of recess.

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Unit of Measure

Items	item-3083 Type II Cross Recessed Oval Countersunk Trim Head Tapping Screw, with 0.133" Recess Dia.	item-3084 Type II Cross Recessed Oval Countersunk Trim Head Tapping Screw, with 0.151" Recess Dia.	item-3085 Type II Cross Recessed Oval Countersunk Trim Head Tapping Screw, with 0.151" Recess Dia.	item-3086 Type II Cross Recessed Oval Countersunk Trim Head Tapping Screw, with 0.169" Recess Dia.	item-3087 Type II Cross Recessed Oval Countersunk Trim Head Tapping Screw, with 0.169" Recess 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. 4	N/A No. 5	N/A No. 6	N/A No. 6	N/A No. 8
Nominal Size or Basic Screw Dia. (Decimal)	N/A 0.1120 in	N/A 0.1250 in	N/A 0.1380 in	N/A 0.1380 in	N/A 0.1640 in
Head Size	N/A 3	N/A 4	N/A 4	N/A 5	N/A 5
Applicable to Screw Types¹	N/A 1 2 3 4
Ref. Recess Dia. (M)	N/A 0.133 in	N/A 0.151 in	N/A 0.151 in	N/A 0.169 in	N/A 0.169 in
Ref. Recess Depth (T)	N/A 0.072 in	N/A 0.082 in	N/A 0.082 in	N/A 0.094 in	N/A 0.094 in
Ref. Recess Width (N)	N/A 0.030 in	N/A 0.032 in	N/A 0.032 in	N/A 0.035 in	N/A 0.035 in
Driver Size	N/A Point Same on all Drivers
Max. Recess Penetration Gaging Depth	N/A 0.053 in	N/A 0.064 in	N/A 0.064 in	N/A 0.077 in	N/A 0.077 in
Min. Recess Penetration Gaging Depth	N/A 0.041 in	N/A 0.052 in	N/A 0.052 in	N/A 0.064 in	N/A 0.064 in
Max. Protrusion Above Gaging Dia. (F)	N/A 0.064 in	N/A 0.069 in	N/A 0.069 in	N/A 0.075 in	N/A 0.075 in
Min. Protrusion Above Gaging Dia. (F)	N/A 0.044 in	N/A 0.048 in	N/A 0.048 in	N/A 0.053 in	N/A 0.053 in
Gaging Dia. (G)	N/A 0.148 in	N/A 0.172 in	N/A 0.172 in	N/A 0.196 in	N/A 0.196 in
¹ 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square

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