The Screw,assembled Washer, cataloged under National Stock Number 5305-01-558-2764, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Espey Mfg and Electronics Corp. Government technical data includes 10 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-558-2764 |
| Primary Part Number | 71843-1 |
| Item Name | Screw,assembled Washer |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| Thread Length | 0.375 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Primary Washer Style | FLAT |
| Internal Drive Style | CROSS RECESS TYPE III |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| 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 |
|---|---|
| 71843-1 PRIMARY | Espey Mfg and Electronics Corp (USA) |
NSN 5305-01-558-2764 is a Screw,assembled Washer, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-558-2764 has 1 manufacturer part number on file: 71843-1 (Espey Mfg and Electronics Corp).
Key specifications for 71843-1: Thread Length: 0.375 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN; Head Style: PAN; Primary Washer Style: FLAT. 10 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.