screws › tapping screws
MS21207-4-4
Military Standard Tapping Screw
Description
Tapping Screw
Specifications
| Alternate Part Number | NAS548P-4-4 |
|---|---|
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
| Country of Origin | USA |
| Diameter | 4 |
| Fastener Length | 0.250 |
| Features Provided | Casehardened |
| Finish | Cadmium II Plated |
| Head Angle | 100 º |
| Head Diameter | 0.200 inches minimum and 0.225 inches maximum |
| Head Style | Flat countersunk |
| Head Type | Flat |
| Industry Standards/Certification | MS21207 |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/4 in |
| Material | Steel |
| NIIN | 00-835-4720 |
| NSN | 5305-00-835-4720 |
| Nonmachine Thread Diameter | 0.112 |
| Nonmachine Thread Style | Dog type (type b or c) |
| Surface Treatment | Cadmium and chromate |
| Surface Treatment Specification | Qq-p-416,type 2,class 3 fed spec all treatment responses |
| Thread Size | 4-4 |
| Weight | 0.0005 lb |
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
Interchangeable
Parts that share a National Stock Number or are listed as an alternate for MS21207-4-4 — functionally equivalent.
- NAS548-P4-4 Listed alternate
Looking for a specific part? Use the cross-reference lookup.
Catalog data updated 2026-07-05. Report a data error