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AN530-4R8
Aeronautical Standard Tapping Screw
Description
Tapping Screw
Specifications
| Alternate Part Number | MS51861-15 |
|---|---|
| Country of Origin | USA |
| Diameter | 4 |
| Fastener Length | 0.500 |
| Features Provided | Casehardened |
| Head Diameter | 0.193 inches minimum and 0.211 inches maximum |
| Head Height | 0.075 inches minimum and 0.085 inches maximum |
| Head Style | Round Head |
| Head Type | Pan |
| Industry Standards/Certification | AN530 |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 in |
| Material | Steel |
| NIIN | 00-167-2298 |
| NSN | 5305-00-167-2298 |
| Nonmachine Thread Diameter | 0.112 |
| Nonmachine Thread Style | Dog type (type b or c) |
| Point Type | B |
| Sold In | Per Package |
| Surface Treatment | Cadmium |
| Surface Treatment Specification | Qq-p-416,ty 1,cl 3 fed spec single treatment response |
| Weight | .005 lb |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for AN530-4R8 — functionally equivalent.
- MS51861-15 Listed alternate 1/2 in · Pan Head · Steel
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Catalog data updated 2026-07-05. Report a data error