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AN530-4R4
Aeronautical Standard Tapping Screw
Description
Tapping Screw
Specifications
| Alternate Part Number | Possible MS51861-12 |
|---|---|
| Country of Origin | USA |
| Diameter | 4 |
| Fastener Length | 0.250 |
| Features Provided | Casehardened |
| Head Diameter | 0.193 inches minimum and 0.211 inches maximum |
| Head Height | 0.086 inches maximum |
| Head Style | Round Head |
| Head Type | Pan |
| Industry Standards/Certification | AN530 |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/4 in |
| Material | Steel |
| NIIN | 00-531-0241 |
| NSN | 5305-00-531-0241 |
| 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 | 0.0001 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 AN530-4R4. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error