The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-191-4589, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Conmaco/rector, L.p. Div Conmaco. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5305-01-191-4589 |
| Primary Part Number | 1024143 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Conmaco/rector, L.p. Div Conmaco |
| Status | ACTIVE |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Thread Length | 0.846 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Material Document and Classification | SAE GRADE 2 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 13 |
| Material | STEEL 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 |
| Part Number | Manufacturer |
|---|---|
| 1024143 | Conmaco/rector, L.p. Div Conmaco (USA) |
| Reference | Meaning |
|---|---|
| 1024143 | 3/9 Design control — primary reference Conmaco Inc |
NSN 5305-01-191-4589 is a Screw,cap,hexagon Head, manufactured by Conmaco/rector, L.p. Div Conmaco, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-191-4589 has 1 manufacturer part number on file: 1024143 (Conmaco/rector, L.p. Div Conmaco).
Key specifications for 1024143: Fastener Length: 1.000 INCHES NOMINAL IN; Thread Length: 0.846 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN; Material Document and Classification: SAE GRADE 2 ASSN STD ALL MATERIAL RESPONSES OVERALL; Nominal Thread Diameter: 0.500 INCHES IN. 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.