The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-143-6505, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is General Dynamics Mission Systems, Inc.. Government technical data includes 16 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-143-6505 |
| Primary Part Number | 57519400-07 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | General Dynamics Mission Systems, Inc. |
| Status | ACTIVE |
| Head Height | 0.068 INCHES NOMINAL0.068 INCHES NOMINAL IN |
| Fastener Length | 0.437 INCHES MINIMUM AND 0.437 INCHES MINIMUM AND 0.468 INCHES MAXIMUM0.468 INCHES MAXIMUM IN |
| Thread Length | 0.130 INCHES MINIMUM AND 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM0.150 INCHES MAXIMUM IN |
| Material Document and Classification | AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.077 INCHES MINIMUM AND 0.077 INCHES MINIMUM AND 0.083 INCHES MAXIMUM0.083 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.112 INCHES0.112 INCHES IN |
| Head Style | PANPAN |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.328 INCHES NOMINAL0.328 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 11 |
| Internal Drive Style | OFFSET CRUCIFORM (TORQUE SET)OFFSET CRUCIFORM (TORQUE SET) |
| Thread Class | 3A3A |
| Thread Quantity Per Inch | 4040 |
| Material | IRON ALLOY 660 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC)UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 0.219 INCHES NOMINAL0.219 INCHES NOMINAL IN |
| 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 |
|---|---|
| 57519400-07 PRIMARY | General Dynamics Mission Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 57519400-07 | 3/9 Design control — primary reference General Dynamics Information Systems Inc. Dba General Dynamics Advanced Information Systems |
NSN 5305-01-143-6505 is a Screw,externally Relieved Body, manufactured by General Dynamics Mission Systems, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-143-6505 has 1 manufacturer part number on file: 57519400-07 (General Dynamics Mission Systems, Inc.).
Key specifications for 57519400-07: Head Height: 0.068 INCHES NOMINAL0.068 INCHES NOMINAL IN; Fastener Length: 0.437 INCHES MINIMUM AND 0.437 INCHES MINIMUM AND 0.468 INCHES MAXIMUM0.468 INCHES MAXIMUM IN; Thread Length: 0.130 INCHES MINIMUM AND 0.130 INCHES MINIMUM AND 0.150 INCHES MAXIMUM0.150 INCHES MAXIMUM IN; Material Document and Classification: AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALLAMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 16 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.