The Screw,machine, cataloged under National Stock Number 5305-01-474-1378, 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 21 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-474-1378 |
| Primary Part Number | 4322644 PC 60 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Screw Surface Treatment | ZINC OR CADMIUM |
| Fastener Length | 0.250 INCHES NOMINAL IN |
| Screw Material Document and Classification | FF-S-92 FED SPEC 1ST MATERIAL RESPONSE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Screw Surface Treatment Document and Classification | QQ-Z-325,TYPE2,CLASS2 FED SPEC 1ST TREATMENT RESPONSE OR QQ-P-416,TYPE1,CLASSC FED SPEC 2ND 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 |
|---|---|
| 124-4364818 PC 33 | Naval Sea Systems Command (USA) |
| 124-5563777 PC 43 | Naval Sea Systems Command (USA) |
| 124-4364812 PC 41 | Naval Sea Systems Command (USA) |
| 124-4498686 PC 43 | Naval Sea Systems Command (USA) |
| 124-4322640 PC 31 | Naval Sea Systems Command (USA) |
| 124-5588671 PC 59 | Naval Sea Systems Command (USA) |
| 124-4364815 PC 33 | Naval Sea Systems Command (USA) |
| 124-4322638 PC 26 | Naval Sea Systems Command (USA) |
| 4322644 PC 60 PRIMARY | Naval Sea Systems Command (USA) |
| 124-5202449 PC 60 | Naval Sea Systems Command (USA) |
| 124-4364814 PC 36 | Naval Sea Systems Command (USA) |
| 124-4364817 PC 31 | Naval Sea Systems Command (USA) |
| 124-4364816 PC 27 | Naval Sea Systems Command (USA) |
| 124-5563772 PC 92 | Naval Sea Systems Command (USA) |
| 124-4322642 PC 38 | Naval Sea Systems Command (USA) |
| 124-5589899 PC 62 | Naval Sea Systems Command (USA) |
| 124-5754756 PC 38 | Naval Sea Systems Command (USA) |
| 124-4364811 PC 36 | Naval Sea Systems Command (USA) |
| 124-5563773 PC 60 | Naval Sea Systems Command (USA) |
| 124-4322639 PC 26 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 1/4-20UNC-2A LG =1/4 | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
| 124-4322644 PC 60 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 5305-01-474-1378 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-474-1378 has 21 manufacturer part numbers on file: 124-4364818 PC 33 (Naval Sea Systems Command), 124-5563777 PC 43 (Naval Sea Systems Command), 124-4364812 PC 41 (Naval Sea Systems Command), 124-4498686 PC 43 (Naval Sea Systems Command), 124-4322640 PC 31 (Naval Sea Systems Command) and 16 more.
Key specifications for 4322644 PC 60: Screw Surface Treatment: ZINC OR CADMIUM; Fastener Length: 0.250 INCHES NOMINAL IN; Screw Material Document and Classification: FF-S-92 FED SPEC 1ST MATERIAL RESPONSE; Nominal Thread Diameter: 0.250 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.