The Bolt,internally Relieved Body, cataloged under National Stock Number 5306-01-018-0840, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Cm Manufacturing Inc Dba Cm Manufacturing Inc. Government technical data includes 12 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-018-0840 |
| Primary Part Number | 66-13401-3 |
| Item Name | Bolt,internally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Cm Manufacturing Inc Dba Cm Manufacturing Inc |
| Status | ACTIVE |
| Fastener Length | 9.290 INCHES NOMINAL IN |
| Thread Length | 1.470 INCHES NOMINAL IN |
| Shank Unthreaded Hole Diameter | 0.090 INCHES MINIMUM AND 0.194 INCHES MAXIMUM FIRST HOLE IN |
| Material Document and Classification | AMS 6407 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.750 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 220000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 16 |
| Material | STEEL OVERALL |
| Thread Series Designator | UN |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 9.000 INCHES NOMINAL FIRST HOLE IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| 66-13401-3 | Cm Manufacturing Inc Dba Cm Manufacturing Inc (USA) |
| 66-13401-3 | The Boeing Company Div Commercial (USA) |
| 66-13401-3 | Heroux-Devtek Inc (CAN) |
| Reference | Meaning |
|---|---|
| 66-13401-3 | 3/2 Design control — primary reference U.S. Government activity |
| 66-13401-3 | 5/2 Secondary reference U.S. Government activity |
NSN 5306-01-018-0840 is a Bolt,internally Relieved Body, manufactured by Cm Manufacturing Inc Dba Cm Manufacturing Inc, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-018-0840 has 3 manufacturer part numbers on file: 66-13401-3 (Cm Manufacturing Inc Dba Cm Manufacturing Inc), 66-13401-3 (The Boeing Company Div Commercial), 66-13401-3 (Heroux-Devtek Inc).
Key specifications for 66-13401-3: Fastener Length: 9.290 INCHES NOMINAL IN; Thread Length: 1.470 INCHES NOMINAL IN; Shank Unthreaded Hole Diameter: 0.090 INCHES MINIMUM AND 0.194 INCHES MAXIMUM FIRST HOLE IN; Material Document and Classification: AMS 6407 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 12 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.