The Bolt,assembled Washer, cataloged under National Stock Number 5306-01-185-2070, 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 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-185-2070 |
| Primary Part Number | 677490C1 |
| Item Name | Bolt,assembled Washer |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Dressta North America Ltd |
| Status | ACTIVE |
| Head Height | 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN |
| Fastener Length | 0.930 INCHES MINIMUM AND 0.945 INCHES MAXIMUM IN |
| Primary Washer Outside Diameter | 0.750 INCHES NOMINAL IN |
| Thread Length | 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Material Document and Classification | A-31,FSCM 92679 MFR REF ALL MATERIAL RESPONSES FASTENER |
| Material Document and Classification | A-O PART 1,FSCM 92679 MFR REF ALL MATERIAL RESPONSES PRIMARY WASHER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | HEXAGON |
| Primary Washer Style | SPLIT HELICAL RING |
| Thread Direction | RIGHT-HAND |
| Primary Washer Material Thickness | 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN |
| Width Between Flats | 0.544 INCHES MINIMUM IN |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 18 |
| Material | STEEL OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Washer Quantity | 1 |
| 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 |
|---|---|
| 677490C1 PRIMARY | Dressta North America Ltd (USA) |
| Reference | Meaning |
|---|---|
| 677490C1 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-185-2070 is a Bolt,assembled Washer, manufactured by Dressta North America Ltd, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-185-2070 has 1 manufacturer part number on file: 677490C1 (Dressta North America Ltd).
Key specifications for 677490C1: Head Height: 0.208 INCHES MINIMUM AND 0.230 INCHES MAXIMUM IN; Fastener Length: 0.930 INCHES MINIMUM AND 0.945 INCHES MAXIMUM IN; Primary Washer Outside Diameter: 0.750 INCHES NOMINAL IN; Thread Length: 0.720 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN. 17 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.