The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-374-1087, 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 16 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-374-1087 |
| Primary Part Number | EN1665-M20X2.5X60-10.9A3D |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | International Organization for Standardization (iso) |
| Status | ACTIVE |
| Extended Washer Thickness | 3.0 MILLIMETERS MINIMUM MM |
| Head Height | 17.1 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 59.4 MILLIMETERS MINIMUM AND 60.6 MILLIMETERS MAXIMUM MM |
| Surface Treatment Document and Classification | DIN 267 PART 9 NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 43.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 2.5 |
| Thread Length | 60.6 MILLIMETERS MAXIMUM MM |
| Material Document and Classification | DIN 267/11 NATIONAL SPEC SINGLE MATERIAL RESPONSE OR DIN 6921 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 20.0 MILLIMETERS MM |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 27.0 MILLIMETERS NOMINAL MM |
| Surface Treatment | ZINC OVERALL |
| Material | STEEL PROPERTY CLASS 10.9 OVERALL |
| Thread Series Designator | 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 |
|---|---|
| EN1665-M20X2.5X60-10.9A3D PRIMARY | International Organization for Standardization (iso) (CHE) |
| DIN6921M20X2.5X60-10.9A3D | Din Deutsches Institut Fur Normung Ev (DEU) |
NSN 5305-01-374-1087 is a Screw,cap,hexagon Head, manufactured by International Organization for Standardization (iso), classified under FSC 5305, Screws. Status: active.
NSN 5305-01-374-1087 has 2 manufacturer part numbers on file: EN1665-M20X2.5X60-10.9A3D (International Organization for Standardization (iso)), DIN6921M20X2.5X60-10.9A3D (Din Deutsches Institut Fur Normung Ev).
Key specifications for EN1665-M20X2.5X60-10.9A3D: Extended Washer Thickness: 3.0 MILLIMETERS MINIMUM MM; Head Height: 17.1 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Fastener Length: 59.4 MILLIMETERS MINIMUM AND 60.6 MILLIMETERS MAXIMUM MM. 16 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.