The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-463-6734, 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 18 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-463-6734 |
| Primary Part Number | 6390827-410 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.215 INCHES NOMINAL IN |
| Fastener Length | 1.863 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS2488B,TY2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.828 INCHES NOMINAL IN |
| Material Document and Classification | MIL-T-9047,T7 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ANODIZE OVERALL |
| Minimum Tensile Strength | 115000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | HEXAGON |
| Countersink Angle | 100.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.959 INCHES MINIMUM AND 1.017 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 |
|---|---|
| 6390827-410 | Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA) |
| 6390827-410 PRIMARY | Naval Sea Systems Command (USA) |
NSN 5305-01-463-6734 is a Screw,cap,socket Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-463-6734 has 2 manufacturer part numbers on file: 6390827-410 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 6390827-410 (Naval Sea Systems Command).
Key specifications for 6390827-410: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.215 INCHES NOMINAL IN; Fastener Length: 1.863 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS2488B,TY2 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 18 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.