The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-451-5649, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-451-5649 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.469 INCHES NOMINAL IN |
| Fastener Length | 3.250 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZW |
| Material Document and Classification | MIL-DTL-1222J, GRADE 400 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Document | MATERIAL WILL BE IN ACCORDANCE WITH NAVAL INVENTORY CONTROL POINT, MECHANICSBURG, ACTIVITY HX QUALITY CONTROL, MANUFACTURING AND TESTING SPECIFICATIONS |
| Width Between Flats | 1.125 INCHES NOMINAL IN |
| Nondefinitive Spec/std Data | I TYPE AND 400 GRADE AND AS FORMED OR STRESS RELIEVED CONDITION |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| 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 | Y |
| Reference | Meaning |
|---|---|
| 803-5001004-X4XX-21 | 5/9 Secondary reference Naval Sea Systems Command |
| 803-5001004-XXXX-21 | 5/9 Secondary reference Naval Sea Systems Command |
| M1222RN12C352NANN | 2/2 Government specification standardization U.S. Government activity |
| 0.75010UNC2A3.250T1G400SEA | 5/9 Secondary reference U.S. Government activity |
| MIL-DTL-1222 | 4/1 Identification reference U.S. Government activity |
NSN 5305-01-451-5649 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-451-5649: Head Height: 0.469 INCHES NOMINAL IN; Fastener Length: 3.250 INCHES NOMINAL IN; Criticality Code Justification: ZZZW; Material Document and Classification: MIL-DTL-1222J, GRADE 400 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 13 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.