The Bolt,square Neck, cataloged under National Stock Number 5306-00-078-3678, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Dressta North America Ltd. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-078-3678 |
| Primary Part Number | 45484A |
| Item Name | Bolt,square Neck |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Neck Length | 0.062 INCHES NOMINAL IN |
| Fastener Length | 2.500 INCHES NOMINAL IN |
| Thread Length | 1.440 INCHES MINIMUM AND 1.576 INCHES MAXIMUM IN |
| Material Document and Classification | F1NE GRAIN,GRADE 8 FSCM 23926 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | OVAL COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Neck Width | 0.492 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.016 INCHES NOMINAL 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 |
|---|---|
| 45484A PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 45484A | 5/9 Secondary reference Komatsu America Corporation |
| H45484A | 5/9 Secondary reference Komatsu America Corporation |
| H-45484-A | C/1 Advisory reference — outside the item-of-supply concept Zf Industrieantriebe Witten Gmbh |
NSN 5306-00-078-3678 is a Bolt,square Neck, manufactured by Dressta North America Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-078-3678 has 1 manufacturer part number on file: 45484A (Dressta North America Ltd).
Key specifications for 45484A: Neck Length: 0.062 INCHES NOMINAL IN; Fastener Length: 2.500 INCHES NOMINAL IN; Thread Length: 1.440 INCHES MINIMUM AND 1.576 INCHES MAXIMUM IN; Material Document and Classification: F1NE GRAIN,GRADE 8 FSCM 23926 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.