The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-144-5571, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-144-5571 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 0.122 INCHES MINIMUM AND 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM0.133 INCHES MAXIMUM IN |
| Fastener Length | 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN |
| Thread Length | 0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN |
| First Diameter From Head | 0.150 INCHES MINIMUM AND 0.150 INCHES MINIMUM AND 0.154 INCHES MAXIMUM0.154 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES0.190 INCHES IN |
| Head Style | PANPAN |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.560 INCHES NOMINAL0.560 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 11 |
| Internal Drive Style | CROSS RECESS TYPE 1CROSS RECESS TYPE 1 |
| Thread Class | 2A2A |
| Thread Quantity Per Inch | 3232 |
| Material | STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 308 OR STEEL COMP 309 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 314 OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385 OVERALL |
| Thread Series Designator | UNFUNF |
| Head Diameter | 0.357 INCHES MINIMUM AND 0.357 INCHES MINIMUM AND 0.373 INCHES MAXIMUM0.373 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| SM-A-587441-20 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-144-5571 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-144-5571: Head Height: 0.122 INCHES MINIMUM AND 0.122 INCHES MINIMUM AND 0.133 INCHES MAXIMUM0.133 INCHES MAXIMUM IN; Fastener Length: 1.000 INCHES NOMINAL1.000 INCHES NOMINAL IN; Thread Length: 0.440 INCHES NOMINAL0.440 INCHES NOMINAL IN; First Diameter From Head: 0.150 INCHES MINIMUM AND 0.150 INCHES MINIMUM AND 0.154 INCHES MAXIMUM0.154 INCHES MAXIMUM IN. 15 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.