The Screw,machine, cataloged under National Stock Number 5305-01-665-4624, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-665-4624 |
| Primary Part Number | 71843-2 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Espey Mfg and Electronics Corp |
| Status | ACTIVE |
| Screw Surface Treatment | PASSIVATE |
| Thread Length | 0.50 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Screw Surface Treatment Document and Classification | ASTM A380 ASSN STD SINGLE TREATMENT RESPONSE |
| 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 |
|---|---|
| 71843-2 | Espey Mfg and Electronics Corp (USA) |
| Reference | Meaning |
|---|---|
| 71843-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-665-4624 is a Screw,machine, manufactured by Espey Mfg and Electronics Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-665-4624 has 1 manufacturer part number on file: 71843-2 (Espey Mfg and Electronics Corp).
Key specifications for 71843-2: Screw Surface Treatment: PASSIVATE; Thread Length: 0.50 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN; Head Style: PAN. 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.