The Screw,machine, cataloged under National Stock Number 5305-01-641-9490, 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 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-641-9490 |
| Primary Part Number | 782-7666609 ITEM 12 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 0.625 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | CROSS RECESS TYPE II |
| Countersink Angle | 82.0 RADIANS NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| 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 |
|---|---|
| 782-7666609 ITEM 12 PRIMARY | Naval Sea Systems Command (USA) |
| 782-7666609 ITEM 29 | Naval Sea Systems Command (USA) |
| J2484CCRF4-10S1 | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| J2484CCRF4-10S1 | 5/9 Secondary reference U.S. Government activity |
| 782-7666609 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5305-01-641-9490 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-641-9490 has 3 manufacturer part numbers on file: 782-7666609 ITEM 12 (Naval Sea Systems Command), 782-7666609 ITEM 29 (Naval Sea Systems Command), J2484CCRF4-10S1 (Sae International Dba Sae International).
Key specifications for 782-7666609 ITEM 12: Fastener Length: 0.625 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN; Head Style: FLAT COUNTERSUNK; Thread Direction: RIGHT-HAND. 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.