The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-216-9054, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-216-9054 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.412 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Fifth Diameter | 5.440 INCHES NOMINAL IN |
| Head Height | 0.480 INCHES NOMINAL IN |
| Sixth Diameter From Head | 0.300 INCHES NOMINAL IN |
| Fastener Length | 6.310 INCHES NOMINAL IN |
| Seventh Diameter From Head | 0.362 INCHES NOMINAL IN |
| Thread Length | 1.750 INCHES NOMINAL IN |
| Criticality Code Justification | ZZZY |
| Material Document and Classification | ASTMA276-304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.362 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 2.690 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 3.880 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.750 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of Sixth Diameter | 5.470 INCHES NOMINAL IN |
| Width Between Flats | 0.312 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 2.380 INCHES NOMINAL IN |
| Fifth Diameter From Head | 0.499 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 4.000 INCHES NOMINAL IN |
| Third Diameter From Head | 0.500 INCHES NOMINAL IN |
| Thread Series Designator | UNF |
| Reference Number Differentiating Characteristics | MATERIAL WILL BE IN ACCORDANCE WITH SHIPS PARTS CONTROL CENTER ACTIVITY HX QUALITY CONTROL,MANUFACTURING AND TESTING SPECIFICATIONS |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | C |
| Reference | Meaning |
|---|---|
| 935F432-28 | 3/1 Design control — primary reference U.S. Government activity |
NSN 5305-01-216-9054 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-216-9054: Fourth Diameter From Head: 0.412 INCHES NOMINAL IN; Distance From Largest Bearing Surface of Head to End of Fifth Diameter: 5.440 INCHES NOMINAL IN; Head Height: 0.480 INCHES NOMINAL IN; Sixth Diameter From Head: 0.300 INCHES NOMINAL IN. 29 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.