The Retainer,operating Nut, cataloged under National Stock Number 4820-01-061-5103, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves 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1 specification, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 4820-01-061-5103 |
| Item Name | Retainer,operating Nut |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Status | ACTIVE |
| General Characteristics Item Description | BRONZE,ASTM B61; 2.250-12 NS-3A EXTERNAL THD; 1.685 IN. ID; 2.437 IN. W ACROSS FLATS OF HEX; USED ON SIZE 4 VALVE A |
| 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 |
|---|---|
| 810-2177917-4-11 | 5/9 Secondary reference U.S. Government activity |
| 803-2177917 | D/9 Drawing number reference only U.S. Government activity |
| 803-2177917-4-11 | 3/2 Design control — primary reference U.S. Government activity |
NSN 4820-01-061-5103 is a Retainer,operating Nut, classified under FSC 4820, Valves, Nonpowered. Status: active.
Key specifications for 4820-01-061-5103: General Characteristics Item Description: BRONZE,ASTM B61; 2.250-12 NS-3A EXTERNAL THD; 1.685 IN. ID; 2.437 IN. W ACROSS FLATS OF HEX; USED ON SIZE 4 VALVE A; End Item Identification: BR9ONZE GATE VALVE. 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.