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NAS1669-4L8
Blind Fastener
Description
Blind Fastener
Specifications
| Diameter | 0.260 in |
|---|---|
| Expansion Device | Threaded stem |
| Fastener Length | Between 0.616 inches and 0.656 inches |
| Features | Internally Threaded |
| Grip Length | Between 0.470 inches and 0.531 inches |
| Grip Range | 0.470 to 0.531 in |
| Hardness Rating | 39.0 rockwell c bolt and 43.0 rockwell c bolt, 39.0 rockwell c nut and 43.0 rockwell c nut |
| Head Height | 0.135 |
| Head Style | Hexagon Head |
| Head Type | Protruding |
| Industry Standards/Certification | NAS1669 |
| Material | CRES |
| Material Specification | Mil-s-5626 military specification 1st material response bolt or mil-s-6049 military specification 2nd material response bolt or mil-s-6758 military specification 3rd material response bolt, Mil-s-5626 military specification 1st material response nut or mil-s-6049 military specification 2nd material response nut or mil-s-6758 military specification 3rd material response nut, Qq-s-763 federal specification 1st material response sleeve or ams 5639 assn standard 1st material response sleeve or ams 5641 assn standard 2nd material response sleeve or astm a582 assn standard 3rd material response sleeve |
| NIIN | 00-074-4514 |
| NSN | 5320-00-074-4514 |
| Shank Diameter | Between 0.258 inches and 0.260 inches |
| Shank Style | Threaded self-plugging shank w/sleeve |
| Specification Data | 80205-nas1669 professional/industrial association standard |
| Surface Treatment | Cadmium and chromate, Cadmium and passivate |
| Surface Treatment Specification | Cl 2 federal specification single treatment response bolt type 2 qq-p-416, Cl 2 federal specification single treatment response nut type 2 qq-p-416, Cl 3 federal specification 1st treatment response sleeve and qq-p-35 federal specification 2nd treatment response sleeve type 1 qq-p-416 |
| Weight | .005 lb |
| Width Across Flats | Between 0.367 inches and 0.375 inches |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- NAS1671-4L8 NAS 21/32 in · Hexagon Head · Iron
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Catalog data updated 2026-07-05. Report a data error