The Cap,safety,valve, cataloged under National Stock Number 4440-01-058-7538, is classified within Federal Supply Class 4440 (Driers, Dehydrators, and Anhydrators) of the Furnace, Steam, Drying, Nuclear Reactors group. Government technical data includes 1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4440-01-058-7538 |
| Item Name | Cap,safety,valve |
| FSC / FSG | 4440 / 44 — Driers, Dehydrators, and Anhydrators |
| Status | ACTIVE |
| General Characteristics Item Description | BRASS; 0.020 IN. MATERIAL THK; 3.930 IN.OD; 3.890 IN. ID; 1.000 IN. O/A H; W/BRASS SCREEN 24X110 DW PLAIN DUTCH WEAVE MESH; V/O DEHYDRATOR RFG IN |
| 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 |
|---|---|
| V76-17 | 5/9 Secondary reference Henry Technologies, Inc. |
| 2-010-125 | 3/9 Design control — primary reference Henry Technologies, Inc. |
| 1004065-P3 | C/1 Advisory reference — outside the item-of-supply concept Tld Ace Corp Div Tld Ace |
NSN 4440-01-058-7538 is a Cap,safety,valve, classified under FSC 4440, Driers, Dehydrators, and Anhydrators. Status: active.
Key specifications for 4440-01-058-7538: General Characteristics Item Description: BRASS; 0.020 IN. MATERIAL THK; 3.930 IN.OD; 3.890 IN. ID; 1.000 IN. O/A H; W/BRASS SCREEN 24X110 DW PLAIN DUTCH WEAVE MESH; V/O DEHYDRATOR RFG IN. 1 specification is 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.