The Screw,shoulder, cataloged under National Stock Number 5305-01-235-0161, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is United States Department of the Navy Dba Naval Surface Warfare Center Panama City. Government technical data includes 17 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 | 5305-01-235-0161 |
| Primary Part Number | 17189-4 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | United States Department of the Navy Dba Naval Surface Warfare Center Panama City |
| Status | ACTIVE |
| Width Across Flats | 0.252 INCHES NOMINAL IN |
| Head Height | 0.313 INCHES NOMINAL IN |
| Fastener Length | 0.890 INCHES NOMINAL IN |
| Shoulder Length | 0.390 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.313 INCHES NOMINAL FIRST SHOULDER IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Material Document and Classification | AISI 1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 1020 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 0.468 INCHES NOMINAL 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 |
|---|---|
| 17189-4 PRIMARY | United States Department of the Navy Dba Naval Surface Warfare Center Panama City (USA) |
NSN 5305-01-235-0161 is a Screw,shoulder, manufactured by United States Department of the Navy Dba Naval Surface Warfare Center Panama City, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-235-0161 has 1 manufacturer part number on file: 17189-4 (United States Department of the Navy Dba Naval Surface Warfare Center Panama City).
Key specifications for 17189-4: Width Across Flats: 0.252 INCHES NOMINAL IN; Head Height: 0.313 INCHES NOMINAL IN; Fastener Length: 0.890 INCHES NOMINAL IN; Shoulder Length: 0.390 INCHES NOMINAL FIRST SHOULDER IN. 17 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.