Military Standards - Tapping Screw - MS21207-6-8
Standard Part
Description: Tapping Screw
Part Number: MS21207-6-8
Alternate Part Numbers: NAS548P6-8
Product Overview:
A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes screw, assembled washer.
Item Specification:
Fastener Length | 0.500 inches nominal | |
| Head Style | Flat countersunk | |
| Head Diameter | 0.249 inches minimum and 0.279 inches maximum | |
| Internal Drive Style | Cross recess type 1 | |
| Features Provided | Casehardened | |
| Nonmachine Thread Style | Dog type (type b or c) | |
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum | |
| Nonmachine Nominal Thread Diameter | 0.138 inches | |
| Material | Steel overall | |
| Surface Treatment | Cadmium overall and chromate overall | |
| Surface Treatment Document and Classification | QQ-P-416 ty 2 cl 3 fed spec all treatment responses overall |
Fits In:
· Textron Aviation Beechcraft King Air 100 - all variants
· Textron Aviation Beechcraft King Air 200 - all variants
· Textron Aviation Beechcraft King Air 300 - all variants
· Textron Aviation Beechcraft King Air 90 - all variants