The Screw,machine, cataloged under National Stock Number 5305-00-273-2033, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 16 specifications, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5305-00-273-2033 |
| Primary Part Number | 280451PC114 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Head Height | 0.445 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN |
| Fastener Length | 2.750 INCHES NOMINAL IN |
| Screw Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE |
| Thread Length | 1.750 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Designator | AS MODIFIED BY THREAD SIZE AND SERIES/TYPE DESIGNATOR AND HEAD DIMENSIONS |
| Width Between Flats | 1.088 INCHES MINIMUM AND 1.125 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND 10S STYLE |
| Screw Material | STEEL CORROSION RESISTING |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 280451PC114 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| MILB857TYPE2 | 4/1 Identification reference U.S. Government activity |
NSN 5305-00-273-2033 is a Screw,machine, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-273-2033 has 1 manufacturer part number on file: 280451PC114 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
2 possible matches (shared part number, not a government interchangeability claim): 5306-00-273-6097, 5306-00-274-1591. Verify interchangeability with system specifications before substitution.
Key specifications for 280451PC114: Head Height: 0.445 INCHES MINIMUM AND 0.493 INCHES MAXIMUM IN; Fastener Length: 2.750 INCHES NOMINAL IN; Screw Material Document and Classification: 66 FED STD SINGLE MATERIAL RESPONSE; Thread Length: 1.750 INCHES MINIMUM IN. 16 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.