screws › machine screws
NAS1802-4D16
Machine Screw
Description
Fastener Length: 1-1/16", Thread: 1/4-32, Thread Length: 63/64", drilled head
Specifications
| Fastener Length | Between 1.024 inches and 1.071 inches |
|---|---|
| Head Height | Between 0.125 inches and 0.14 inches |
| Head Style | Hexagon Head |
| Internal Drive Style | Cross recess type iii |
| Material | CRES |
| Screw Material | Stainless steel |
| Screw Material Specification | A286 (uns s66286) conforming to chemistry of ams5731 or ams5732 or ams5737 or ams5853 assn standard single material response |
| Screw Surface Treatment | Passivate |
| Screw Surface Treatment Specification | Class 1 assn standard single treatment response type 2 or type 8 method 1 ams2700 |
| Special Features | Has drilled head with 3 holes drilled across adjacent sides; holes are 0.046 to 0.056 inch in diameter |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | Between 0.96 inches and 1.039 inches |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | Unjf (fine thread with external controlled root radius) |
| Thread Size | 1/4 |
| Width Between Flats | Between 0.367 inches and 0.376 inches |
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 NAS1802-4D16. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error