The Screw,assembled Washer, cataloged under National Stock Number 5305-00-877-7437, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Brp Us Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-877-7437 |
| Primary Part Number | 510293 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Brp Us Inc |
| Status | ACTIVE |
| Fastener Length | 0.347 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN |
| Primary Washer Outside Diameter | 0.497 INCHES MINIMUM AND 0.517 INCHES MAXIMUM IN |
| Thread Length | 0.247 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Primary Washer Style | COUNTERSINK EXTERNAL TEETH |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.022 INCHES NOMINAL IN |
| Internal Drive Style | SLOT |
| Countersink Angle | 81.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| Head Diameter | 0.462 INCHES MINIMUM AND 0.507 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 |
|---|---|
| 510293 PRIMARY | Brp Us Inc (USA) |
| Reference | Meaning |
|---|---|
| 510293 | 5/9 Secondary reference Outboard Marine Corp Johnson Motors Div |
NSN 5305-00-877-7437 is a Screw,assembled Washer, manufactured by Brp Us Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-877-7437 has 1 manufacturer part number on file: 510293 (Brp Us Inc).
Key specifications for 510293: Fastener Length: 0.347 INCHES MINIMUM AND 0.369 INCHES MAXIMUM IN; Primary Washer Outside Diameter: 0.497 INCHES MINIMUM AND 0.517 INCHES MAXIMUM IN; Thread Length: 0.247 INCHES MINIMUM IN; Nominal Thread Diameter: 0.250 INCHES 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.