The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-658-4185, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-658-4185 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Width Across Flats | 3.020 MILLIMETERS MINIMUM AND 3.071 MILLIMETERS MAXIMUM MM |
| Head Height | 3.88 MILLIMETERS MINIMUM AND 4.00 MILLIMETERS MAXIMUM MM |
| Fastener Length | 14.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | AMS2700, METHOD 1, CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 0.7 |
| Thread Length | 14.0 MILLIMETERS NOMINAL MM |
| Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5737 ASSN STD SINGLE MATERIAL RESPONSE OR AMS5853 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 4.0 MILLIMETERS MM |
| Head Style | FLAT FILLISTER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | PASSIVATE OVERALL |
| Internal Drive Style | HEXAGON |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | MJ |
| Head Diameter | 6.80 MILLIMETERS MINIMUM AND 7.00 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 |
|---|---|
| NA0069A040014 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5305-01-658-4185 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-658-4185: Width Across Flats: 3.020 MILLIMETERS MINIMUM AND 3.071 MILLIMETERS MAXIMUM MM; Head Height: 3.88 MILLIMETERS MINIMUM AND 4.00 MILLIMETERS MAXIMUM MM; Fastener Length: 14.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: AMS2700, METHOD 1, CLASS 4 ASSN STD SINGLE TREATMENT RESPONSE OVERALL. 15 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.