The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-418-9090, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Eaton Aerospace, Llc Dba Jackson South. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-01-418-9090 |
| Primary Part Number | 526876 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Eaton Aerospace, Llc Dba Jackson South |
| Status | ACTIVE |
| Extended Washer Thickness | 0.060 INCHES MINIMUM IN |
| Head Height | 0.303 INCHES NOMINAL IN |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Extended Washer Diameter | 0.438 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES MINIMUM AND 0.821 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.222 INCHES MINIMUM AND 0.232 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.3125 INCHES MINIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.440 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL COMP 630 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| 526876 PRIMARY | Eaton Aerospace, Llc Dba Jackson South (USA) |
| MS9733-18 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS9733-18 | 5/9 Secondary reference U.S. Government activity |
| MS9733-18 | 5/9 Secondary reference U.S. Government activity |
NSN 5306-01-418-9090 is a Bolt,externally Relieved Body, manufactured by Eaton Aerospace, Llc Dba Jackson South, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-418-9090 has 2 manufacturer part numbers on file: 526876 (Eaton Aerospace, Llc Dba Jackson South), MS9733-18 (Sae International Dba Sae International).
Key specifications for 526876: Extended Washer Thickness: 0.060 INCHES MINIMUM IN; Head Height: 0.303 INCHES NOMINAL IN; Fastener Length: 1.250 INCHES NOMINAL IN; Extended Washer Diameter: 0.438 INCHES NOMINAL IN. 18 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.