The Setscrew, cataloged under National Stock Number 5305-01-661-8644, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Waterous Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-661-8644 |
| Primary Part Number | W23050-10SS |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Waterous Company |
| Status | ACTIVE |
| Fastener Length | 0.63 INCHES NOMINAL IN |
| Thread Length | 0.63 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.50 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNF |
| 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 |
|---|---|
| W23050-10SS PRIMARY | Waterous Company (USA) |
| Reference | Meaning |
|---|---|
| 4260815 | 7/2 Vendor item drawing reference Oshkosh Defense Llc |
NSN 5305-01-661-8644 is a Setscrew, manufactured by Waterous Company, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-661-8644 has 1 manufacturer part number on file: W23050-10SS (Waterous Company).
Key specifications for W23050-10SS: Fastener Length: 0.63 INCHES NOMINAL IN; Thread Length: 0.63 INCHES NOMINAL IN; Nominal Thread Diameter: 0.50 INCHES IN; Head Style: HEADLESS (SETSCREW). 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.