The Bolt,square Neck, cataloged under National Stock Number 5306-01-073-3642, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-073-3642 |
| Primary Part Number | 2645435 |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Neck Length | 0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM0.344 INCHES MAXIMUM IN |
| Head Height | 0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM0.344 INCHES MAXIMUM IN |
| Fastener Length | 1.940 INCHES MINIMUM AND 1.940 INCHES MINIMUM AND 2.060 INCHES MAXIMUM2.060 INCHES MAXIMUM IN |
| Thread Length | 1.414 INCHES MINIMUM AND 1.414 INCHES MINIMUM AND 1.747 INCHES MAXIMUM1.747 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.625 INCHES0.625 INCHES IN |
| Head Style | BUTTONBUTTON |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Neck Width | 0.616 INCHES MINIMUM AND 0.616 INCHES MINIMUM AND 0.642 INCHES MAXIMUM0.642 INCHES MAXIMUM IN |
| Thread Class | 2A2A |
| Thread Quantity Per Inch | 1111 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.219 INCHES MINIMUM AND 1.219 INCHES MINIMUM AND 1.344 INCHES MAXIMUM1.344 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 35252741 | Clark Equipment Co Div Doosan Infracore Portable Power (USA) |
| 2645435 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 32WLFS1213-1-1/2 | 5/2 Secondary reference U.S. Government activity |
| 32WLFS1213X1.5 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-073-3642 is a Bolt,square Neck, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-073-3642 has 2 manufacturer part numbers on file: 35252741 (Clark Equipment Co Div Doosan Infracore Portable Power), 2645435 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2645435: Neck Length: 0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM0.344 INCHES MAXIMUM IN; Head Height: 0.313 INCHES MINIMUM AND 0.313 INCHES MINIMUM AND 0.344 INCHES MAXIMUM0.344 INCHES MAXIMUM IN; Fastener Length: 1.940 INCHES MINIMUM AND 1.940 INCHES MINIMUM AND 2.060 INCHES MAXIMUM2.060 INCHES MAXIMUM IN; Thread Length: 1.414 INCHES MINIMUM AND 1.414 INCHES MINIMUM AND 1.747 INCHES MAXIMUM1.747 INCHES MAXIMUM IN. 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.