The Poppet,valve, cataloged under National Stock Number 4820-00-237-1079, is classified within Federal Supply Class 4820 (Valves, Nonpowered) of the Valves group. The manufacturer of record is Aar Allen Services, Inc Dba Aar Component Services Wellington. 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. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4820-00-237-1079 |
| Primary Part Number | 510208 |
| Item Name | Poppet,valve |
| FSC / FSG | 4820 / 48 — Valves, Nonpowered |
| Manufacturer | Aar Allen Services, Inc Dba Aar Component Services Wellington |
| Status | ACTIVE |
| General Characteristics Item Description | STEEL PER QQ-S-763,TYPE 440C,PASSIVATE PER QQ-P-35,0.245 IN. MIN,0.255 IN. MAX ID,0.495 IN. MIN,0.505 IN. MAX OF LARGEST OD,OD IS OF IRREGULAR SHAPE,2.040 IN. MIN,2.050 IN. MAX O/A LG,FIRST END THREADED MALE,3/8-24 UNF 3A THD,SECOND END UNTHREADED,0.335 IN. MIN,0.340 IN. MAX OF SMALLEST OD,HEAT TREAT PER MIL-H-6875 58 TO 62 ROCKWELL C SCALE 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 |
|---|---|
| 510208 PRIMARY | Aar Allen Services, Inc Dba Aar Component Services Wellington (USA) |
NSN 4820-00-237-1079 is a Poppet,valve, manufactured by Aar Allen Services, Inc Dba Aar Component Services Wellington, classified under FSC 4820, Valves, Nonpowered. Status: active.
NSN 4820-00-237-1079 has 1 manufacturer part number on file: 510208 (Aar Allen Services, Inc Dba Aar Component Services Wellington).
1 possible match (shared part number, not a government interchangeability claim): 5305-00-737-5694. Verify interchangeability with system specifications before substitution.
Key specifications for 510208: General Characteristics Item Description: STEEL PER QQ-S-763,TYPE 440C,PASSIVATE PER QQ-P-35,0.245 IN. MIN,0.255 IN. MAX ID,0.495 IN. MIN,0.505 IN. MAX OF LARGEST OD,OD IS OF IRREGULAR SHAPE,2.040 IN. MIN,2.050 IN. MAX O/A LG,FIRST END THREADED MALE,3/8-24 UNF 3A THD,SECOND END UNTHREADED,0.335 IN. MIN,0.340 IN. MAX OF SMALLEST OD,HEAT TREAT PER MIL-H-6875 58 TO 62 ROCKWELL C SCALE A. 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.