fittings › boss reducers
MS21915W6-4
Military Standard Boss Reducer
Description
anodize aluminum alloy
Specifications
| Connection Style | External seat for gasket seal (boss) 2nd end, Gasket seal (boss) 1st end |
|---|---|
| Connection Type | Threaded external boss 2nd end, Threaded internal boss 1st end |
| Material | Aluminum |
| Material Specification | Qq-a-225/6,t6,t62,t851 fed spec single material response |
| Maximum Operating Pressure | 3000.0 pounds per square inch single response |
| Maximum Operating Temp | 250.0 deg fahrenheit single response |
| Media For Which Designed | Hydraulic fluid single response |
| Nominallength | 1.313 |
| Specification Data | 81343-as18280 government standard |
| Surface Treatment | Anodize |
| Surface Treatment Specification | Mil-a-8625,type 2,class 1 mil spec single treatment response |
| Thread Class | 3a 2nd end, 3b 1st end |
| Thread Series Designator | Unjf all ends |
| Thread Size | 0.438 inches 2nd end, 0.562 inches 1st end |
Cross-reference
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Catalog data updated 2026-07-05. Report a data error