The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-526-0084, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-526-0084 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Head Height | 4.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 4H6H |
| Fastener Length | 10.0 MILLIMETERS NOMINAL MM |
| Surface Treatment Document and Classification | ASME/ANSI B633, F3/ZN5. TYPE II ASSN STD NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Pitch in Millimeters | 0.7 |
| Nominal Thread Diameter | 4.0 MILLIMETERS MM |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | ZINC OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Material | STEEL PROPERTY CLASS 12.9 OVERALL |
| Thread Series Designator | M |
| Head Diameter | 7.0 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 |
| Reference | Meaning |
|---|---|
| 1831BH040010N | 3/9 Design control — primary reference U.S. Government activity |
| ASME B18.3.1M | 5/1 Secondary reference U.S. Government activity |
NSN 5305-01-526-0084 is a Screw,cap,socket Head, classified under FSC 5305, Screws. Status: active.
3 possible matches (shared part number, not a government interchangeability claim): 5305-01-586-8651, 5305-01-586-8652, 5305-01-646-1641. Verify interchangeability with system specifications before substitution.
Key specifications for 5305-01-526-0084: Head Height: 4.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 4H6H; Fastener Length: 10.0 MILLIMETERS NOMINAL MM; Surface Treatment Document and Classification: ASME/ANSI B633, F3/ZN5. TYPE II ASSN STD NATIONAL SPEC SINGLE TREATMENT RESPONSE OVERALL. 13 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.