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AN502-416-16
Aeronautical Standard Screw
Description
All part numbers will follow this format: AN###. To further distinguish between the part numbers, you'll notice that a dash ("-") has been added, followed by some specific variation of more numbers. If there is an "A" after the dash, the part is cadmium plated, Type I, Class 3, with a drilled head. If there is NOT an "A" after the dash, the part is Cadmium plated, Type I. AN500 (coarse thread) and AN501 (fine thread) slotted fillister head screws are fabricated from carbon steel. Tensile strength 55,000 PSI AN502 (fine thread) and AN503 (coarse thread) drilled head, slotted fillister head screws are fabricated from steel meeting specification MIL-S-6050. Tensile strength 125,000 PSI. Cadmium plated, Type I Class 3
Specifications
| Fastener Length | 1.000 |
|---|---|
| Hardness Rating | 26.0 rockwell c minimum and 32.0 rockwell c maximum |
| Head Diameter | 0.389 inches minimum and 0.414 inches maximum |
| Head Height | 0.219 inches minimum and 0.237 inches maximum |
| Head Hole Configuration Style | Round |
| Head Style | Fillister |
| Hole Diameter | 0.062 |
| Hole Quantity | 1 |
| Internal Drive Style | Slot |
| Length | 1" |
| Material | Steel |
| Min. Tensile Strength (psi) | 125000 pounds per square inch |
| Screw Material | Steel comp 8630 |
| Screw Material Specification | Mil-s-6050 mil spec single material response or an-s-9 mil std single material response |
| Screw Surface Treatment | Cadmium |
| Screw Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Special Features | Internal drive style, cross recess, type 1, slot, flat |
| Thread | 1/4-28 |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.820 inches minimum and 0.954 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
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 AN502-416-16. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error