The Bolt,square Neck, cataloged under National Stock Number 5306-00-203-4456, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-203-4456 |
| Primary Part Number | 58A164C523 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Neck Length | 0.906 INCHES NOMINAL IN |
| Fastener Length | 0.906 INCHES NOMINAL IN |
| Thread Length | 0.344 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Neck Width | 0.106 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 58A164C523 | Vertex Modernization and Sustainment Llc (USA) |
| 58A164C523 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 58A164C523 | Marvin Engineering Co, Inc (USA) |
| Reference | Meaning |
|---|---|
| 58A164C523 | 5/9 Secondary reference Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
NSN 5306-00-203-4456 is a Bolt,square Neck, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-203-4456 has 3 manufacturer part numbers on file: 58A164C523 (Vertex Modernization and Sustainment Llc), 58A164C523 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 58A164C523 (Marvin Engineering Co, Inc).
Key specifications for 58A164C523: Neck Length: 0.906 INCHES NOMINAL IN; Fastener Length: 0.906 INCHES NOMINAL IN; Thread Length: 0.344 INCHES NOMINAL IN; Nominal Thread Diameter: 0.138 INCHES IN. 10 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.
NSN 5306-00-203-4456 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.