The Washer,lock, cataloged under National Stock Number 5310-00-845-7769, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Airbus Helicopters (ets De Marignane). Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 8 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-845-7769 |
| Primary Part Number | 55144-002 |
| Item Name | Washer,lock |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Airbus Helicopters (ets De Marignane) |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | COUNTERSINK INTERNAL TEETH |
| Outside Diameter | 0.425 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN |
| Material Thickness | 0.008 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Material | STEEL OVERALL |
| Hole Diameter | 0.232 INCHES MINIMUM AND 0.239 INCHES MAXIMUM 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 |
|---|---|
| 55144-002 | Airbus Helicopters (ets De Marignane) (FRA) |
| 55144-002 | Airbus Group SAS (FRA) |
| 000004005200000 | Aresia Valenton (FRA) |
| 944.48.78.404 | Pilatus Aircraft Ltd (CHE) |
| C74123-Z151-E10 | Siemens Agautomatisierungstechnik Aut A13 (DEU) |
| 27S5-1 | Fairchild Fasteners Europe - Camloc Gmbh (DEU) |
| 55144-002 | Airbus Operations (FRA) |
| NSA55144-002 | Airbus Group SAS (FRA) |
| Reference | Meaning |
|---|---|
| 1019742-001 | 3/9 Design control — primary reference Lexel Imaging Systems Inc |
| 1088948-1 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| G243998-1 | 5/9 Secondary reference Howmet Global Fastening Systems Inc Div Camloc Products |
| 71-815211-1 | 5/9 Secondary reference General Dynamics Advanced Information Systems Inc. Dba General Dynamics Advanced Information Systems |
| 993316-1 | 7/2 Vendor item drawing reference U.S. Government activity |
| G243998-1 | 5/9 Secondary reference Lucent Technologies Inc Advanced Technology Systems |
| 27S5-1 | 5/9 Secondary reference Howmet Global Fastening Systems Inc Div Camloc Products |
| 1019742-001 | 5/9 Secondary reference Anacomp, Inc. |
NSN 5310-00-845-7769 is a Washer,lock, manufactured by Airbus Helicopters (ets De Marignane), classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-845-7769 has 8 manufacturer part numbers on file: 55144-002 (Airbus Helicopters (ets De Marignane)), 55144-002 (Airbus Group SAS), 000004005200000 (Aresia Valenton), 944.48.78.404 (Pilatus Aircraft Ltd), C74123-Z151-E10 (Siemens Agautomatisierungstechnik Aut A13) and 3 more.
Key specifications for 55144-002: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: COUNTERSINK INTERNAL TEETH; Outside Diameter: 0.425 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN; Material Thickness: 0.008 INCHES MINIMUM AND 0.028 INCHES MAXIMUM IN. 8 specifications are 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.