The Guide-Spring, cataloged under National Stock Number 1680-01-057-2295, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 1680-01-057-2295 |
| Primary Part Number | 72440 |
| Item Name | Guide-Spring |
| FSC / FSG | 1680 / 16 — Miscellaneous Aircraft Accessories and Components |
| Manufacturer | Parker-Hannifin Corporation |
| Status | ACTIVE |
| General Characteristics Item Description | CRES QQ-S-763 CLASS 440C,0.295 IN. DIA,0.215 IN. H,HEAT TREAT PER MIL-H-6875 TO RC 56.0 MIN TO 60.0 MAX,PASSIVATE PER QQ-P-35 IN |
| 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 |
|---|---|
| 72440 PRIMARY | Parker-Hannifin Corporation (USA) |
| Reference | Meaning |
|---|---|
| 72440 | 5/9 Secondary reference U.S. Government activity |
| 72440 | 5/1 Secondary reference Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations |
NSN 1680-01-057-2295 is a Guide-Spring, manufactured by Parker-Hannifin Corporation, classified under FSC 1680, Miscellaneous Aircraft Accessories and Components. Status: active.
NSN 1680-01-057-2295 has 1 manufacturer part number on file: 72440 (Parker-Hannifin Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-539-0823, 1560-01-645-2174. Verify interchangeability with system specifications before substitution.
Key specifications for 72440: General Characteristics Item Description: CRES QQ-S-763 CLASS 440C,0.295 IN. DIA,0.215 IN. H,HEAT TREAT PER MIL-H-6875 TO RC 56.0 MIN TO 60.0 MAX,PASSIVATE PER QQ-P-35 IN; End Item Identification: ACFT F16. 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.