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AN525-832R28
Aeronautical Standard Machine Screw
Description
length: 1-3/4", grip: 1-11/32", thread: 8-32, cadmium plated steel, philips recess
Specifications
| Extended Washer Diameter | 0.375 |
|---|---|
| Extended Washer Thickness | 0.023 inches minimum and 0.028 inches maximum |
| Fastener Length | 1.719 inches minimum and 1.781 inches maximum |
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Diameter | 0.312 |
| Head Height | 0.082 inches minimum and 0.092 inches maximum |
| Head Style | Round extended washer |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 25/32 |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Screw Material | Steel comp 8630 or steel comp 4037 |
| Screw Material Specification | Mil-s-6050 mil spec 1st material response or ams 6300 assn std 2nd material response |
| Screw Surface Treatment | Cadmium or cadmium and chromate or cadmium and phosphate or zinc or zinc and chromate or zinc and phosphate |
| Screw Surface Treatment Specification | Q-p-416 fed spec 13th treatment response or qq-p-416 fed spec 2nd treatment response or qq-b-416 fed spec 3rd treatment response or qq-z-325 fed spec 4th treatment response or qq-z-325 fed spec 5th treatment response or qq-z-325 fed spec 6th treatment response |
| Thread Class | 3a |
| Thread Diameter | 0.164 |
| Thread Direction | Right-hand |
| Thread Length | 0.375 inches minimum and 0.437 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 8 |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
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Catalog data updated 2026-07-05. Report a data error