The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-318-5232, 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 21 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-318-5232 |
| Primary Part Number | 2149664 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Head Height | 0.600 INCHES NOMINAL IN |
| Fastener Length | 3.281 INCHES NOMINAL IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) COUNTERBORE |
| Internal Thread Direction | RIGHT-HAND COUNTERBORE |
| Thread Length | 1.188 INCHES NOMINAL IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM OVERALL |
| Threads Per Inch | 18 COUNTERBORE |
| Style Designator | CONCENTRIC HOLE THREADED |
| Material Document and Classification | ASTM A322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES COUNTERBORE IN |
| Width Between Flats | 1.250 INCHES NOMINAL IN |
| Shoulder Diameter | 0.7501 INCHES MINIMUM AND 0.7503 INCHES MAXIMUM IN |
| Internal Thread Class | 3B COUNTERBORE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 11 |
| Material | STEEL COMP 4140 OVERALL |
| Shoulder Length | 2.083 INCHES MINIMUM AND 2.093 INCHES MAXIMUM IN |
| 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 |
|---|---|
| 2149664 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| Reference | Meaning |
|---|---|
| 5306PL0916130 | 6/9 Informative reference only Jednolity Indeks Materialowy - Uniform Material Index |
NSN 5306-01-318-5232 is a Bolt,internally Relieved Body, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-318-5232 has 1 manufacturer part number on file: 2149664 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
Key specifications for 2149664: Head Height: 0.600 INCHES NOMINAL IN; Fastener Length: 3.281 INCHES NOMINAL IN; Thread Series: UNIFIED NATIONAL COARSE (UNC) COUNTERBORE; Internal Thread Direction: RIGHT-HAND COUNTERBORE. 21 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.