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NAS1801-4D13
Machine Screw
Description
NAS1801 series screw
Specifications
| Bearing Surface Of Head Surface Finish | 63.0 microinches |
|---|---|
| Fastener Length | 0.7965 inches minimum and 0.8435 inches maximum |
| Head Height | 0.125 inches minimum and 0.140 inches maximum |
| Head Hole Configuration Style | Hexagon flats |
| Head Style | Hexagon Head |
| Hole Diameter | 0.046 inches minimum and 0.056 inches maximum |
| Hole Quantity | 3 |
| Internal Drive Style | Cross recess type ii |
| Part Name Assigned By Controlling Agency | Screw,hex head,cruciform recess,full thread,alloy steel,160ksi ftu |
| Screw Material | Steel comp 4140 or steel comp 4340 or steel comp 8740 |
| Screw Material Specification | Ams6382 national spec 1st material response or ams6415 or ams6484 national spec 2nd material response or ams6322 national spec 3rd material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416,type ii,class 2 fed spec single treatment response |
| Specification Data | 80205-nas1801 professional/industrial association standard |
| Thread Class | 3a |
| Thread Diameter | 0.2500 |
| Thread Direction | Right-hand |
| Thread Length | 0.7965 inches minimum and 0.8435 inches maximum |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNJF |
| Thread Surface Finish | 32.0 microinches |
| Width Between Flats | 0.367 inches minimum and 0.376 inches maximum |
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 NAS1801-4D13. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error