screws › close tolerance screws
NAS1207-21
Screw
Description
Fastener Length: 1-49/64", Thread: 7/16-20, Thread Length: 15/32"
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.750 inches minimum and 1.780 inches maximum |
| Grip Diameter | 0.4360 inches minimum and 0.4370 inches maximum |
| Grip Length | 1.302 inches minimum and 1.322 inches maximum |
| Hardness Rating | 36.0 rockwell c minimum and 40.0 rockwell c maximum |
| Head Diameter | 0.832 inches minimum and 0.890 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 49/64 |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Specification Data | 80205-nas1207 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 2 fed spec single treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.438 |
| Thread Direction | Right-hand |
| Thread Length | 0.428 inches minimum and 0.478 inches maximum |
| Thread Qty | 20 |
| Thread Qty Per Inch (tpi) | 20 |
| Thread Series Designator | UNJF |
| Thread Size | 7/16 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- NAS1207-9
- NAS1207-21
- NAS1207-22
- NAS1207-48
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1207-21. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error