screws › machine screws
NAS1102-4-30
Screw
Description
Fastener Length: 1-7/8", Thread: 1/4-28, Thread Length: 1-21/32
Specifications
| Countersink Angle | Between 99.0 degrees and 101.0 degrees |
|---|---|
| Fastener Length | Between 1.813 inches and 1.875 inches |
| Hardness Rating | Between 36.0 rockwell c and 40.0 rockwell c |
| Head Diameter | Between 0.442 inches and 0.507 inches |
| Head Style | Flat countersunk |
| Internal Drive Style | Torque set |
| Material | Steel |
| Min. Tensile Strength (psi) | 160000 pounds per square inch |
| Screw Material | Steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 |
| Screw Material Specification | Mil-s-5626 military specification 1st material response or mil-s-5000 military specification 2nd material response or mil-s-8503 military specification 3rd material response or mil-s-6098 military specification 4th material response or mil-s-6049 military specification 5th material response |
| Screw Surface Treatment | Cadmium and chromate |
| Screw Surface Treatment Specification | Cl 3 federal specification all treatment responses type 2 qq-p-416 |
| Specification Data | 80205-nas1102 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 1.636 inches and 1.669 inches |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series | UNJF |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS1102-4-30. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error