The Screw,machine, cataloged under National Stock Number 5305-01-473-0899, 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 11 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-473-0899 |
| Primary Part Number | 124-5563778 PC 29 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Screw Surface Treatment | ZINC |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Screw Material Document and Classification | FF-S-85C FED STD 1ST MATERIAL RESPONSE |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Screw Surface Treatment Document and Classification | QQ-Z-325,TYPEII,CLASS2 FED SPEC 1ST TREATMENT RESPONSE |
| 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 |
|---|---|
| 124-5563778 PC 29 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 122-2404638 PC 37 | C/1 Advisory reference — outside the item-of-supply concept Naval Sea Systems Command |
NSN 5305-01-473-0899 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-473-0899 has 1 manufacturer part number on file: 124-5563778 PC 29 (Naval Sea Systems Command).
Key specifications for 124-5563778 PC 29: Screw Surface Treatment: ZINC; Fastener Length: 1.000 INCHES NOMINAL IN; Screw Material Document and Classification: FF-S-85C FED STD 1ST MATERIAL RESPONSE; Nominal Thread Diameter: 0.500 INCHES IN. 11 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.