The Head and Disk,safety,pressure Re, cataloged under National Stock Number 4820-01-183-4254, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco). Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-183-4254 |
| Primary Part Number | OTU-1/2MPTX1/2SAE |
| Item Name | Head and Disk,safety,pressure Re |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco) |
| Status | ACTIVE |
| Disk Material | COPPER ALLOY |
| Burst Pressure | 86.0 PRESSURE POUNDS PER SQUARE INCH GAGE |
| Head Type | SCREW |
| Burst Temperature | 72.0 FAHRENHEIT DEGF |
| Head Material | COPPER ALLOY |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| OTU-1/2MPTX1/2SAE PRIMARY | Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco) (USA) |
| OTU-1/2MPTX1/2SAE PRIMARY | Hoosier Industrial Supply, Inc (USA) |
| Reference | Meaning |
|---|---|
| 4-4-6017-01 | 5/9 Secondary reference Gibson Cryogenics Inc |
NSN 4820-01-183-4254 is a Head and Disk,safety,pressure Re, manufactured by Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco), classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-183-4254 has 2 manufacturer part numbers on file: OTU-1/2MPTX1/2SAE (Oklahoma Safety Equipment Co Inc Dba Oseco Div Oklahoma Safety Equipment Co. (dba Oseco)), OTU-1/2MPTX1/2SAE (Hoosier Industrial Supply, Inc).
Key specifications for OTU-1/2MPTX1/2SAE: Disk Material: COPPER ALLOY; Burst Pressure: 86.0 PRESSURE POUNDS PER SQUARE INCH GAGE; Head Type: SCREW; Burst Temperature: 72.0 FAHRENHEIT DEGF. 5 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.