The Screw,shoulder, cataloged under National Stock Number 5305-01-459-0178, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-459-0178 |
| Primary Part Number | 6619862 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.312 INCHES NOMINAL IN |
| Fastener Length | 2.190 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN |
| Shoulder Length | 0.750 INCHES NOMINAL FIRST SHOULDER IN |
| Shoulder Diameter | 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM FIRST SHOULDER IN |
| Thread Length | 1.410 INCHES NOMINAL IN |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Supplementary Features | FINISH ELECTROPOLISH |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.720 INCHES MINIMUM AND 0.780 INCHES MAXIMUM IN |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 6619862 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 661982 | 5/9 Secondary reference Raytheon Company |
NSN 5305-01-459-0178 is a Screw,shoulder, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-459-0178 has 1 manufacturer part number on file: 6619862 (Naval Sea Systems Command).
Key specifications for 6619862: Head Height: 0.312 INCHES NOMINAL IN; Fastener Length: 2.190 INCHES MINIMUM AND 2.310 INCHES MAXIMUM IN; Shoulder Length: 0.750 INCHES NOMINAL FIRST SHOULDER IN; Shoulder Diameter: 0.499 INCHES MINIMUM AND 0.500 INCHES MAXIMUM 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.