The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-327-4528, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate. Government technical data includes 18 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-327-4528 |
| Primary Part Number | 12548816 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate |
| Status | ACTIVE |
| Extended Washer Thickness | 2.490 MILLIMETERS NOMINAL MM |
| Width Across Flats | 15.870 MILLIMETERS NOMINAL MM |
| Head Height | 13.710 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 4G6G |
| Fastener Length | 27.580 MILLIMETERS NOMINAL MM |
| Extended Washer Diameter | 24.130 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 1.250 |
| Thread Length | 11.320 MILLIMETERS NOMINAL MM |
| First Diameter From Head | 8.55 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 10.0 MILLIMETERS MM |
| Head Style | DOUBLE HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 17.860 MILLIMETERS NOMINAL MM |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 16.26 MILLIMETERS NOMINAL MM |
| Externally Relieved Body Diameter Quantity | 1 |
| Internal Drive Style | DOUBLE HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | ISO M |
| 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 |
|---|---|
| 12548816 PRIMARY | Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate (USA) |
| Reference | Meaning |
|---|---|
| 5305013274528 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
NSN 5305-01-327-4528 is a Screw,externally Relieved Body, manufactured by Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-327-4528 has 1 manufacturer part number on file: 12548816 (Combat Capabilities Development Command (ccdc) Armaments Center Dba Ccdc Div Logistics Research and Engineering Directorate).
Key specifications for 12548816: Extended Washer Thickness: 2.490 MILLIMETERS NOMINAL MM; Width Across Flats: 15.870 MILLIMETERS NOMINAL MM; Head Height: 13.710 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 4G6G. 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.