The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-643-6436, 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 7 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-643-6436 |
| Primary Part Number | 180-7066414-727 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Fastener Length | 6.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 1.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 6 |
| Thread Series Designator | UNRC |
| 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 |
|---|---|
| 180-7066414-727 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 67-01-C625 | 5/2 Secondary reference U.S. Government activity |
| H452-4503-727 | 5/2 Secondary reference U.S. Government activity |
| 180-7066414 | D/9 Drawing number reference only Naval Sea Systems Command |
NSN 5305-01-643-6436 is a Screw,cap,hexagon Head, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-643-6436 has 1 manufacturer part number on file: 180-7066414-727 (Naval Sea Systems Command).
2 possible matches (shared part number, not a government interchangeability claim): 5305-01-643-6443, 5305-01-643-6452. Verify interchangeability with system specifications before substitution.
Key specifications for 180-7066414-727: Fastener Length: 6.250 INCHES NOMINAL IN; Nominal Thread Diameter: 1.500 INCHES IN; Head Style: HEXAGON; Thread Direction: RIGHT-HAND. 7 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.