The Valve,safety Relief, cataloged under National Stock Number 4820-01-617-6757, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mcmaster-Carr Supply Co. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-617-6757 |
| Primary Part Number | 1093K1 |
| Item Name | Valve,safety Relief |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mcmaster-Carr Supply Co |
| Status | ACTIVE |
| Flow Control Device | POPPET |
| Nominal Pipe Size Accommodated | 0.125 INCHES FIRST END IN |
| Nominal Length | 0.5 INCHES ALL ENDS IN |
| Connection Type | THREADED EXTERNAL PIPE FIRST END |
| Material Document and Classification | 35670 MIL SPEC SINGLE MATERIAL RESPONSE FLOW CONTROL DEVICE |
| Operating Pressure | 5.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS |
| Nominal Thread Size | 0.125 INCHES FIRST END IN |
| Material | STEEL OVERALL |
| Thread Series Designator | PTF-SAE SHORT FIRST END |
| Opening Pressure Setting | 1.0 POUNDS PER SQUARE INCH LBS |
| Valve Operation Method | AUTOMATIC |
| 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 |
|---|---|
| 1093K1 PRIMARY | Mcmaster-Carr Supply Co (USA) |
NSN 4820-01-617-6757 is a Valve,safety Relief, manufactured by Mcmaster-Carr Supply Co, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-617-6757 has 1 manufacturer part number on file: 1093K1 (Mcmaster-Carr Supply Co).
Key specifications for 1093K1: Flow Control Device: POPPET; Nominal Pipe Size Accommodated: 0.125 INCHES FIRST END IN; Nominal Length: 0.5 INCHES ALL ENDS IN; Connection Type: THREADED EXTERNAL PIPE FIRST END. 11 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.