The Thumbscrew, cataloged under National Stock Number 5305-01-470-4853, 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 13 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 | 5305-01-470-4853 |
| Primary Part Number | 6780978 |
| Item Name | Thumbscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.380 INCHES NOMINAL IN |
| Fastener Length | 3.333 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | QQ-P-35,TYPE IV FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 2.677 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | KNURLED NO. 1 |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNF |
| Head Diameter | 1.970 INCHES MINIMUM AND 2.000 INCHES MAXIMUM 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 |
|---|---|
| 6780978 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-470-4853 is a Thumbscrew, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-470-4853 has 1 manufacturer part number on file: 6780978 (Naval Sea Systems Command).
Key specifications for 6780978: Head Height: 0.380 INCHES NOMINAL IN; Fastener Length: 3.333 INCHES NOMINAL IN; Surface Treatment Document and Classification: QQ-P-35,TYPE IV FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 2.677 INCHES NOMINAL IN. 13 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.