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  • 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.
  • Short screws are those threaded full length.
This type of recess has a large center opening, wide straight wings, and blunt bottom, with all edges relieved or rounded.
Type IA Cross Recessed Oval Countersunk Trim Head Tapping Screws:Long Screws with Shoulder and Short Screws
Unit of Measure
1 2 

Item #

Description

Type

Nominal Size or Basic Screw Dia.

Head Size

Ref. (M)

Ref. (T)

Ref. (N)

item-3051 N/A Type IA Long Screw, with 0.118" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 4 N/A 3 N/A 0.118 in N/A 0.077 in N/A 0.030 in
item-3052 N/A Type IA Long Screw, with 0.130" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 5 N/A 4 N/A 0.130 in N/A 0.089 in N/A 0.030 in
item-3053 N/A Type IA Long Screw, with 0.130" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 6 N/A 4 N/A 0.130 in N/A 0.089 in N/A 0.030 in
item-3054 N/A Type IA Long Screw, with 0.162" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 6 N/A 5 N/A 0.162 in N/A 0.091 in N/A 0.041 in
item-3055 N/A Type IA Long Screw, with 0.162" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 8 N/A 5 N/A 0.162 in N/A 0.091 in N/A 0.041 in
item-3056 N/A Type IA Long Screw, with 0.188" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 8 N/A 6 N/A 0.188 in N/A 0.117 in N/A 0.041 in
item-3057 N/A Type IA Long Screw, with 0.200" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 10 N/A 8 N/A 0.200 in N/A 0.130 in N/A 0.041 in
item-3058 N/A Type IA Long Screw, with 0.200" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 12 N/A 8 N/A 0.200 in N/A 0.130 in N/A 0.041 in
item-3059 N/A Type IA Long Screw, with 0.214" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 12 N/A 10 N/A 0.214 in N/A 0.143 in N/A 0.041 in
item-3060 N/A Type IA Long Screw, with 0.214" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 14 N/A 10 N/A 0.214 in N/A 0.143 in N/A 0.041 in
item-3061 N/A Type IA Long Screw, with 0.264" Recess Dia. N/A Type IA Long Screws with Shoulder N/A No. 14 N/A 12 N/A 0.264 in N/A 0.148 in N/A 0.056 in
item-3062 N/A Type IA Long Screw, with 0.214" Recess Dia. N/A Type IA Long Screws with Shoulder N/A 1/4 in N/A 10 N/A 0.214 in N/A 0.143 in N/A 0.041 in
item-3063 N/A Type IA Long Screw, with 0.264" Recess Dia. N/A Type IA Long Screws with Shoulder N/A 1/4 in N/A 12 N/A 0.264 in N/A 0.148 in N/A 0.056 in
item-3064 N/A Type IA Long Screw, with 0.264" Recess Dia. N/A Type IA Long Screws with Shoulder N/A 5/16 in N/A 12 N/A 0.264 in N/A 0.148 in N/A 0.056 in
item-3065 N/A Type IA Long Screw, with 0.284" Recess Dia. N/A Type IA Long Screws with Shoulder N/A 5/16 in N/A 1/4 in N/A 0.284 in N/A 0.168 in N/A 0.057 in
item-3066 N/A Type IA Long Screw, with 0.384" Recess Dia. N/A Type IA Long Screws with Shoulder N/A 3/8 in N/A 5/16 in N/A 0.384 in N/A 0.232 in N/A 0.086 in
item-3067 N/A Type IA Short Screw, with 0.118" Recess Dia. N/A Type IA Short Screws N/A No. 4 N/A 3 N/A 0.118 in N/A 0.077 in N/A 0.030 in
item-3068 N/A Type IA Short Screw, with 0.130" Recess Dia. N/A Type IA Short Screws N/A No. 5 N/A 4 N/A 0.130 in N/A 0.089 in N/A 0.030 in
item-3069 N/A Type IA Short Screw, with 0.130" Recess Dia. N/A Type IA Short Screws N/A No. 6 N/A 4 N/A 0.130 in N/A 0.089 in N/A 0.030 in
item-3070 N/A Type IA Short Screw, with 0.162" Recess Dia. N/A Type IA Short Screws N/A No. 6 N/A 5 N/A 0.152 in N/A 0.080 in N/A 6.041 in
item-3071 N/A Type IA Short Screw, with 0.162" Recess Dia. N/A Type IA Short Screws N/A No. 8 N/A 5 N/A 0.152 in N/A 0.080 in N/A 0.041 in
item-3072 N/A Type IA Short Screw, with 0.188" Recess Dia. N/A Type IA Short Screws N/A No. 8 N/A 6 N/A 0.172 in N/A 0.100 in N/A 0.041 in
item-3073 N/A Type IA Short Screw, with 0.200" Recess Dia. N/A Type IA Short Screws N/A No. 10 N/A 8 N/A 0.186 in N/A 0.115 in N/A 0.041 in
item-3074 N/A Type IA Short Screw, with 0.200" Recess Dia. N/A Type IA Short Screws N/A No. 12 N/A 8 N/A 0.186 in N/A 0.115 in N/A 0.041 in
item-3075 N/A Type IA Short Screw, with 0.214" Recess Dia. N/A Type IA Short Screws N/A No. 12 N/A 10 N/A 0.202 in N/A 0.132 in N/A 0.041 in
Unit of Measure
1 2