The Retainer,valve, cataloged under National Stock Number 4820-01-166-4151, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 1 specification, 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 | 4820-01-166-4151 |
| Primary Part Number | L5871061-003 |
| Item Name | Retainer,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| General Characteristics Item Description | ALUMINUM ALLOY PER QQ-A-200/3 2024-T8511; 0.906 IN. LG,0.9375-20 UNJEF-3A THREADS ONE END 0.375 IN. LG,UNTHREADED OD 0.797 IN. MIN 0.798 IN. MAX WITH 0.245 IN. MIN 0.255 IN. MAX WIDE GROOVE TO DEPTH 0.620 IN. MIN 0.622 IN. MAX OD,HEX OPENING AT THREADED END 0.562 IN. ACROSS FLATS X 0.270 IN. DEEP,0.250 IN. X 0.480 IN. DEEP BORE,0.510 IN. MIN 0.520 IN. MAX X 0.290 IN. DEEP COUNTERBORE AT END OPPOSITE THREADS A |
| 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 |
|---|---|
| L5871061-003 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 4820-01-166-4151 is a Retainer,valve, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-01-166-4151 has 1 manufacturer part number on file: L5871061-003 (The Boeing Company Div Legacy Am&m).
Key specifications for L5871061-003: General Characteristics Item Description: ALUMINUM ALLOY PER QQ-A-200/3 2024-T8511; 0.906 IN. LG,0.9375-20 UNJEF-3A THREADS ONE END 0.375 IN. LG,UNTHREADED OD 0.797 IN. MIN 0.798 IN. MAX WITH 0.245 IN. MIN 0.255 IN. MAX WIDE GROOVE TO DEPTH 0.620 IN. MIN 0.622 IN. MAX OD,HEX OPENING AT THREADED END 0.562 IN. ACROSS FLATS X 0.270 IN. DEEP,0.250 IN. X 0.480 IN. DEEP BORE,0.510 IN. MIN 0.520 IN. MAX X 0.290 IN. DEEP COUNTERBORE AT END OPPOSITE THREADS A; End Item Identification: B-1B. 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.