The Screw,machine, cataloged under National Stock Number 5305-01-468-4245, 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 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-468-4245 |
| Primary Part Number | 1/2-13UNC-3A X 3/4 LG |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Screw Material Document and Classification | MIL-S-933 MIL SPEC 1ST MATERIAL RESPONSE |
| Thread Pitch in Millimeters | 1.5 |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| 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 |
|---|---|
| 1/2-13UNC-3A X 3/4 LG | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 703-15554071 ITEM 28 | 5/9 Secondary reference U.S. Government activity |
| 170-1554071 ITEM 28 | 5/9 Secondary reference Naval Sea Systems Command |
| 703-1554071 ITEM 28 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-468-4245 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-468-4245 has 1 manufacturer part number on file: 1/2-13UNC-3A X 3/4 LG (Naval Sea Systems Command).
Key specifications for 1/2-13UNC-3A X 3/4 LG: Fastener Length: 0.750 INCHES NOMINAL IN; Screw Material Document and Classification: MIL-S-933 MIL SPEC 1ST MATERIAL RESPONSE; Thread Pitch in Millimeters: 1.5; Thread Length: 0.750 INCHES NOMINAL 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.