The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-591-3668, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Bisco Industries, Inc. Div Bisco Industries. Government technical data includes 13 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-591-3668 |
| Primary Part Number | 2054AS295-02 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Bisco Industries, Inc. Div Bisco Industries |
| Status | ACTIVE |
| Head Height | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Fastener Length | 1.580 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN |
| Thread Length | 0.399 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.557 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 2054AS295-02 PRIMARY | Bisco Industries, Inc. Div Bisco Industries (USA) |
| 2054AS295-02 PRIMARY | Magnus-Hitech Industries, Inc (USA) |
| 2054AS295-02 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5306-01-591-3668 is a Bolt,externally Relieved Body, manufactured by Bisco Industries, Inc. Div Bisco Industries, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-591-3668 has 3 manufacturer part numbers on file: 2054AS295-02 (Bisco Industries, Inc. Div Bisco Industries), 2054AS295-02 (Magnus-Hitech Industries, Inc), 2054AS295-02 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 2054AS295-02: Head Height: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Fastener Length: 1.580 INCHES MINIMUM AND 1.610 INCHES MAXIMUM IN; Thread Length: 0.399 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 INCHES 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.