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MS3213-21L
Military Standard Machine Screw
Description
Fastener Length: 1/4", Thread: 6-32, Thread Length: 1/4
Specifications
| Fastener Length | 0.230 inches minimum and 0.250 inches maximum |
|---|---|
| Head Diameter | 0.256 inches minimum and 0.294 inches maximum |
| Head Height | 0.087 inches minimum and 0.097 inches maximum |
| Head Style | Watertight |
| Internal Drive Style | Cross recess type 1 |
| Length | 1/4 |
| Locking Feature | Strip threads or patch threads or pellet threads |
| Material | CRES |
| Material Specification | Qq-s-763 fed spec 1st material response or qq-s-763 fed spec 2nd material response or qq-s-763 fed spec 3rd material response or astm a493 assn std 1st material response or astm a493 assn std 2nd material response or astm a493 assn std 3rd material response or astm a493 assn std 4th material response or astm a493 assn std 5th material response |
| Special Features | Furnished with one o-ring |
| Surface Treatment | Passivate |
| Surface Treatment Specification | Qq-p-35 fed spec single treatment response |
| Thread Class | 2a |
| Thread Diameter | 0.138 |
| Thread Direction | Right-hand |
| Thread Length | 0.168 inches minimum and 0.250 inches maximum |
| Thread Qty | 32 |
| Thread Qty Per Inch (tpi) | 32 |
| Thread Series Designator | UNC |
| Thread Size | 6 |
Other sizes
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Catalog data updated 2026-07-05. Report a data error