The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-644-0855, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 8 specifications, cited from the U.S. Government catalog. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-644-0855 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Thread Length | 2.000 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZW |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Departure From Cited Document | MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 10 |
| 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 | S |
| Reference | Meaning |
|---|---|
| MIL-DTL-1222, SELF-LOCKINGL1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 92-11-6250L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 3/4-10UNC-2A X 2IN TY2 GR500 QQ- | 4/1 Identification reference U.S. Government activity |
| 3/4-10UNC-2A X 2IN TY2GR500QQ-L1 | 5/1 Secondary reference Naval Inventory Control Point Mechanicsburg |
| 92-11-6250 | 3/1 Design control — primary reference U.S. Government activity |
| MIL-DTL-1222, SELF-LOCKING | 5/1 Secondary reference U.S. Government activity |
NSN 5305-01-644-0855 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-644-0855: Thread Length: 2.000 INCHES NOMINAL IN; Criticality Code Justification: ZZZW; Nominal Thread Diameter: 0.750 INCHES IN; Thread Direction: RIGHT-HAND. 8 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.