The Closure, cataloged under National Stock Number 1680-01-057-1079, is classified within Federal Supply Class 1680 (Miscellaneous Aircraft Accessories and Components) of the Aircraft Components and Accessories group. The manufacturer of record is Parker-Hannifin Corporation. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 1680-01-057-1079 |
| Primary Part Number | 72437 |
| Item Name | Closure |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Parker-Hannifin Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | CRES,TYPE 303,QQ-S-764,PASSIVATE TYPE 4 QQ-P-35,0.556 IN. MIN 0.564IN. MAX HEX,0.710 IN. MIN 0.720 IN. MAX LG,0.497 IN. MIN 0.498 IN. MAX DIAEND,0.562-24 NEF 2A THD 0.270 IN. FROM END,0.010 IN. ID 0.610 IN. MIN 0.615 IN. MAX DEEP A |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL Q — CCL Item — Commerce Control List |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 72437 PRIMARY | Parker-Hannifin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 72437 | 5/9 Secondary reference U.S. Government activity |
| 72437 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
NSN 1680-01-057-1079 is a Closure, manufactured by Parker-Hannifin Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-057-1079 has 1 manufacturer part number on file: 72437 (Parker-Hannifin Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5340-01-234-3346. Verify interchangeability with system specifications before substitution.
Key specifications for 72437: General Characteristics Item Description: CRES,TYPE 303,QQ-S-764,PASSIVATE TYPE 4 QQ-P-35,0.556 IN. MIN 0.564IN. MAX HEX,0.710 IN. MIN 0.720 IN. MAX LG,0.497 IN. MIN 0.498 IN. MAX DIAEND,0.562-24 NEF 2A THD 0.270 IN. FROM END,0.010 IN. ID 0.610 IN. MIN 0.615 IN. MAX DEEP 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.
NSN 1680-01-057-1079 has DEMIL Code Q. Demilitarization may be required before disposal or transfer to non-military entities.
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.