The Valve,relief,pressure and Temper, cataloged under National Stock Number 4820-01-523-7573, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Mcmaster-Carr Supply Company. Government technical data includes 10 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-01-523-7573 |
| Primary Part Number | 9761K13 |
| Item Name | Valve,relief,pressure and Temper |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Mcmaster-Carr Supply Company |
| Status | ACTIVE |
| First End Thread Direction | RIGHT-HAND |
| Temp Rating | 450.0 FAHRENHEIT DEGF |
| Second End Relationship with First End | IDENTICAL |
| Body Style | ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS |
| First End Style Designator | GASKET SEAL |
| End Connection Quantity | 2 |
| First End Connection Type | THREADED INTERNAL PIPE |
| First End Nominal Pipe Size Accommodated | 0.750 INCHES IN |
| Material | COPPER ALLOY BODY |
| Material | PLASTIC SILICONE FLOW CONTROL DEVICE |
| 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 |
|---|---|
| 9761K13 PRIMARY | Mcmaster-Carr Supply Company (USA) |
| Reference | Meaning |
|---|---|
| 9761K12 | 5/9 Secondary reference Mcmaster-Carr Supply Company |
| 9761K12 | 5/9 Secondary reference Mcmaster-Carr Supply Co |
NSN 4820-01-523-7573 is a Valve,relief,pressure and Temper, manufactured by Mcmaster-Carr Supply Company, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-523-7573 has 1 manufacturer part number on file: 9761K13 (Mcmaster-Carr Supply Company).
Key specifications for 9761K13: First End Thread Direction: RIGHT-HAND; Temp Rating: 450.0 FAHRENHEIT DEGF; Second End Relationship with First End: IDENTICAL; Body Style: ANGLE GIVE "ADQM" AND "ADQN" ONLY IF FLANGED ONE OR TWO ENDS. 10 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.