The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-127-8499, 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15 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-127-8499 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Head Height | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Fastener Length | 0.590 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ES-F59-2 FSCM 92003 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.280 INCHES MINIMUM AND 0.330 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.250 INCHES NOMINAL IN |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 303 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 2643219 | 3/2 Design control — primary reference U.S. Government activity |
| 10115161 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-127-8499 is a Screw,cap,hexagon Head, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-127-8499: Surface Finish: 32.0 MICROINCHES GRIP; Head Height: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Fastener Length: 0.590 INCHES NOMINAL IN; Surface Treatment Document and Classification: ES-F59-2 FSCM 92003 MFR REF 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.