The Guide,valve Stem, cataloged under National Stock Number 4820-01-371-7249, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-371-7249 |
| Item Name | Guide,valve Stem |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| Aa End Chamfer Angle in Deg | 15.0 |
| Aa End Chamfer Length | 0.312 INCHES NOMINAL IN |
| Major Diameter Length | 0.375 INCHES NOMINAL IN |
| Bb End Shank Diameter | 1.500 INCHES NOMINAL IN |
| Style Designator | PLAIN-STEPPED SHOULDER |
| Bore Counterbore | INCLUDED |
| Outside Diameter | 1.500 INCHES NOMINAL IN |
| Counterbore Depth | 0.875 INCHES NOMINAL IN |
| Counterbore Location | AA END |
| Counterbore Diameter | 0.562 INCHES NOMINAL IN |
| Shoulder Diameter | 1.250 INCHES NOMINAL IN |
| Bb End Chamfer Length | 0.312 INCHES NOMINAL IN |
| Length From Aa End to Largest Diameter Face | 1.437 INCHES NOMINAL IN |
| Aa End Diameter | 0.750 INCHES NOMINAL IN |
| Bb End Chamfer Angle in Deg | 60.0 |
| Bore Diameter | 0.2500 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING |
| Shoulder Length | 0.875 INCHES NOMINAL IN |
| Bore Countersink | NOT INCLUDED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 302 PART 302-01 | 5/9 Secondary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
| 40663-5 PART 302-01 | 3/9 Design control — primary reference Trac Regulator Co., Inc. Dba Trac Regulator Co Inc |
NSN 4820-01-371-7249 is a Guide,valve Stem, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-371-7249: Aa End Chamfer Angle in Deg: 15.0; Aa End Chamfer Length: 0.312 INCHES NOMINAL IN; Major Diameter Length: 0.375 INCHES NOMINAL IN; Bb End Shank Diameter: 1.500 INCHES NOMINAL IN. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.