The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-408-8580, 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 19 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-408-8580 |
| Primary Part Number | 2054AS295-01 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Head Height | 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN |
| Fastener Length | 1.149 INCHES MINIMUM AND 1.179 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | MIL-F-14072(EL)E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.399 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A193 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A276 ASSN STD SINGLE MATERIAL RESPONSE OR ASTM A479 ASSN STD SINGLE MATERIAL RESPONSE GRIP |
| Material Document and Classification | ASTM A581 ASSN STD ALL MATERIAL RESPONSES OR ASTM A582 ASSN STD ALL MATERIAL RESPONSES HEAD |
| First Diameter From Head | 0.170 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.558 INCHES MINIMUM AND 0.577 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 20 |
| Material | STEEL GRIP |
| Material | STEEL COMP 203EZ OR STEEL COMP 303 OR STEEL COMP 303 PLUS X OR STEEL COMP 303MA OR STEEL COMP 303PB OR STEEL COMP 303SE OR STEEL COMP 416 OR STEEL COMP 416 PLUS X OR STEEL COMP 416SE OR STEEL COMP 430F OR STEEL COMP 430FSE OR STEEL COMP 420F OR STEEL COMP 420FSE OR STEEL COMP 440F HEAD |
| 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 |
|---|---|
| 2054AS295-01 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 2054AS295-01 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Simulation Training & Support |
| 10116284 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5306-01-408-8580 is a Bolt,externally Relieved Body, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-408-8580 has 1 manufacturer part number on file: 2054AS295-01 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 2054AS295-01: Head Height: 0.235 INCHES MINIMUM AND 0.265 INCHES MAXIMUM IN; Fastener Length: 1.149 INCHES MINIMUM AND 1.179 INCHES MAXIMUM IN; Surface Treatment Document and Classification: MIL-F-14072(EL)E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Length: 0.399 INCHES MINIMUM AND 0.429 INCHES MAXIMUM IN. 19 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.