screws › tapping screws
MS21207-4-8
Military Standard Tapping Screw
Description
diameter: #4 length: 1/2", tapping screw - cadmium ii plated steel - 100°, flat head - type "b" threads
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 0.500 |
| Features Provided | Casehardened |
| Head Diameter | 0.207 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/2 |
| Material | Steel |
| Nonmachine Thread Diameter | 0.112 |
| Nonmachine Thread Style | Wide flute (type h or bt) |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,ty 2 cl 3 fed spec all treatment responses |
Other sizes
Parts that share this base number, ordered by size. Always verify the full specification before substituting.
- MS21207-4-4
- MS21207-4-6
- MS21207-4-8
Cross-reference
Similar parts
Parts with matching key dimensions — often from a different standards family. Candidates for comparison only; verify the full specification before substituting.
- AN531-4R8 AN 1/2 in · Flat countersunk · Steel
- NAS548P4-8 NAS 1/2 in · Flat countersunk · Steel
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Catalog data updated 2026-07-05. Report a data error