The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-249-0439, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 18 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-249-0439 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 1.65 MILLIMETERS MINIMUM AND 1.90 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 9.88 MILLIMETERS MINIMUM AND 10.12 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 0.5 |
| Thread Length | 3.88 MILLIMETERS MINIMUM AND 4.12 MILLIMETERS MAXIMUM MM |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 2.10 MILLIMETERS MINIMUM AND 2.35 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 3.0 MILLIMETERS MM |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 5.76 MILLIMETERS MINIMUM AND 6.24 MILLIMETERS MAXIMUM MM |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | OXIDE OVERALL |
| Internal Drive Style | SLOT |
| Material | STEEL COMP 416 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 5.5 MILLIMETERS MINIMUM AND 5.8 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| A3013574-4 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-249-0439 is a Screw,externally Relieved Body, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-249-0439: Head Height: 1.65 MILLIMETERS MINIMUM AND 1.90 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Fastener Length: 9.88 MILLIMETERS MINIMUM AND 10.12 MILLIMETERS MAXIMUM MM; Surface Treatment Document and Classification: MIL-C-13924,CLASS 4 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL. 18 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.