The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-571-5898, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is International Organization for Standardization (iso). Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-571-5898 |
| Primary Part Number | ISO7380-1-M5X8-A2 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Width Across Flats | 4.5 MILLIMETERS NOMINAL MM |
| Head Height | 2.8 MILLIMETERS NOMINAL MM |
| Fastener Length | 8.0 MILLIMETERS NOMINAL MM |
| Nominal Thread Diameter | 5.0 MILLIMETERS MM |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | HEXAGON |
| Material | STEEL OVERALL |
| Thread Series Designator | M |
| Head Diameter | 9.5 MILLIMETERS NOMINAL MM |
| 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 |
|---|---|
| BM5-8 | Ondrives Ltd (GBR) |
| ISO7380-1-M5X8-A2 PRIMARY | International Organization for Standardization (iso) (CHE) |
| Reference | Meaning |
|---|---|
| ISO7380-M5X8-A2 | 5/9 Secondary reference International Organization for Standardization (iso) |
NSN 5305-01-571-5898 is a Screw,cap,socket Head, manufactured by International Organization for Standardization (iso), classified under FSC 5305, Screws. Status: active.
NSN 5305-01-571-5898 has 2 manufacturer part numbers on file: BM5-8 (Ondrives Ltd), ISO7380-1-M5X8-A2 (International Organization for Standardization (iso)).
Key specifications for ISO7380-1-M5X8-A2: Width Across Flats: 4.5 MILLIMETERS NOMINAL MM; Head Height: 2.8 MILLIMETERS NOMINAL MM; Fastener Length: 8.0 MILLIMETERS NOMINAL MM; Nominal Thread Diameter: 5.0 MILLIMETERS MM. 11 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.