The Setscrew, cataloged under National Stock Number 5305-01-396-4340, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huntington Ingalls Inc Div Newport News Shipbuilding. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-396-4340 |
| Primary Part Number | 2270-399 PART 106 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huntington Ingalls Inc Div Newport News Shipbuilding |
| Status | ACTIVE |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.375 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | HEXAGON |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | NICKEL ALLOY R-405 OR NICKEL ALLOY 400 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 |
|---|---|
| 2270-399 PART 106 PRIMARY | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| 404-6818525 PART 106 | Naval Sea Systems Command (USA) |
| 6818525 PART 106 | Naval Sea Systems Command (USA) |
NSN 5305-01-396-4340 is a Setscrew, manufactured by Huntington Ingalls Inc Div Newport News Shipbuilding, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-396-4340 has 3 manufacturer part numbers on file: 2270-399 PART 106 (Huntington Ingalls Inc Div Newport News Shipbuilding), 404-6818525 PART 106 (Naval Sea Systems Command), 6818525 PART 106 (Naval Sea Systems Command).
Key specifications for 2270-399 PART 106: Fastener Length: 0.500 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281 FED SPEC ALL MATERIAL RESPONSES OVERALL; Nominal Thread Diameter: 0.375 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.