The Setscrew, cataloged under National Stock Number 5305-01-128-8926, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Caterpillar Inc Div Caterpillar Defense. Government technical data includes 14 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-128-8926 |
| Primary Part Number | 4N6326 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Caterpillar Inc Div Caterpillar Defense |
| Status | ACTIVE |
| Fastener Length | 1.839 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | 1E2101 FSCM 11083 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 1.839 INCHES NOMINAL IN |
| Material Document and Classification | 1E303 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEADLESS (SETSCREW) |
| Thread Direction | RIGHT-HAND |
| Point Style | OVAL |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Internal Drive Style | SLOT |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL COMP 1215 OVERALL |
| Thread Series Designator | UNEF |
| 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 |
|---|---|
| 4N6326 PRIMARY | Caterpillar Inc Div Caterpillar Defense (USA) |
NSN 5305-01-128-8926 is a Setscrew, manufactured by Caterpillar Inc Div Caterpillar Defense, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-128-8926 has 1 manufacturer part number on file: 4N6326 (Caterpillar Inc Div Caterpillar Defense).
Key specifications for 4N6326: Fastener Length: 1.839 INCHES NOMINAL IN; Surface Treatment Document and Classification: 1E2101 FSCM 11083 MFR REF SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 1.839 INCHES NOMINAL IN; Material Document and Classification: 1E303 FSCM 11083 MFR REF SINGLE MATERIAL RESPONSE OVERALL. 14 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.