The Screw,machine, cataloged under National Stock Number 5305-01-417-0027, 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 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-417-0027 |
| Primary Part Number | 556-6406595-MDBC-A46 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Locking Feature Material Document and Classification | MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Screw Material Document and Classification | FF-S-92 FED SPEC SINGLE MATERIAL RESPONSE |
| Thread Length | 0.396 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Locking Feature Material | PLASTIC |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PATCH OR PELLET OR STRIP |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | SLOT |
| 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 |
|---|---|
| 556-6406595-MDBC-A46 PRIMARY | Naval Sea Systems Command (USA) |
| 556-6406595-MDBC-B46 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 218013231 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5305-01-417-0027 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-417-0027 has 2 manufacturer part numbers on file: 556-6406595-MDBC-A46 (Naval Sea Systems Command), 556-6406595-MDBC-B46 (Naval Sea Systems Command).
Key specifications for 556-6406595-MDBC-A46: Locking Feature Material Document and Classification: MIL-F-18240 MIL SPEC SINGLE MATERIAL RESPONSE; Fastener Length: 0.500 INCHES NOMINAL IN; Screw Material Document and Classification: FF-S-92 FED SPEC SINGLE MATERIAL RESPONSE; Thread Length: 0.396 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN. 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.