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This type of recess has a large center opening, wide straight wings, and blunt bottom, with all edges relieved or rounded.
Applicable to screw types as indicated by code symbols.
Applicable to screw types as indicated by code symbols.
- Type AB thread forming.
- Type A thread forming, except for short lengths.
- Types B and BP thread forming and Types BF and BT thread cutting.
- Type C thread forming and Types D, F, G, and T thread cutting.
Unit of Measure
Specifications
Product |
N/A Tapping Screws |
Unit of Measure |
N/A English |
Type |
N/A Type IA Short Screws |
Nominal Size or Basic Screw Dia. |
N/A No. 6 |
Nominal Size or Basic Screw Dia. (Decimal) |
N/A 0.1380 in |
Head Size |
N/A 5 |
| Applicable to Screw Types1 |
N/A
1 2 3 4 |
Ref. Recess Dia. (M) |
N/A 0.152 in |
Ref. Recess Depth ((T) |
N/A 0.080 in |
Ref. Recess Width (N) |
N/A 6.041 in |
Driver Size |
N/A 2 |
Max. Recess Penetration Gaging Depth |
N/A 0.074 in |
Min. Recess Penetration Gaging Depth |
N/A 0.056 in |
Max. Protrusion Above Gaging Dia. (F) |
N/A 0.075 in |
Min. Protrusion Above Gaging Dia. (F) |
N/A 0.053 in |
Gaging Dia. (G) |
N/A 0.196 in |
- 1 1 = Circle, 2 = Diamond, 3 = Triangle, 4 = Square
