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AN526-632R18
Aeronautical Standard Machine Screw
Description
Truss Head Machine Screw
Specifications
| Alternate Part Number | AN526-6R18 |
|---|---|
| Country of Origin | USA |
| Fastener Length | 1.125 |
| Head Diameter | 0.303 inches minimum and 0.321 inches maximum |
| Head Height | 0.086 inches maximum |
| Head Style | Button |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 1/8 |
| Material | Steel |
| Min. Tensile Strength (psi) | 55000 pounds per square inch |
| NIIN | 00-144-3921 |
| NSN | 5305-00-144-3921 |
| Screw Material | Steel or steel comp 1010 |
| Screw Material Specification | Qq-s-630 fed spec 2nd material response or qq-s-631 fed spec 2nd material response or qq-s-634 fed spec 2nd material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Sold In | Per Package |
| Thread Class | 2a |
| Thread Diameter | 0.138 |
| Thread Direction | Right-hand |
| Thread Length | 1.063 inches minimum and 1.125 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 6 |
| Weight | .005 lb |
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 AN526-632R18. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error