screws › tapping screws
MS51861-15
#4 1/2 Tapping Screw
Description
Tapping Screw
Specifications
| Alternate Part Number | Possible AN530-4R8 |
|---|---|
| Country of Origin | USA |
| Diameter | 4 |
| Fastener Length | 0.469 inches minimum and 0.500 inches maximum |
| Features Provided | Casehardened |
| Head Angle | 100 ? |
| Head Diameter | 0.205 inches minimum and 0.219 inches maximum |
| Head Height | 0.070 inches minimum and 0.080 inches maximum |
| Head Style | Pan Head |
| Head Type | Pan |
| Industry Standards/Certification | MS51861 |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 in |
| Material | Steel |
| Material Specification | Aisi assn std all material responses |
| NIIN | 00-053-1114 |
| NSN | 5305-00-053-1114 |
| Nonmachine Thread Diameter | 0.112 |
| Nonmachine Thread Style | Dog type (type b or c) |
| Point Type | A |
| Size | #4, 4-24 |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416 ty 2 cl 3 fed spec all treatment responses |
| Weight | .005 lb |
Cross-reference
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS51861-15 — functionally equivalent.
- AN530-4R8 Listed alternate 1/2 in · Round Head · Steel
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- MS51861-15C MS 1/2 in · Pan Head · Steel
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error