The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-028-9820, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Goodrich Corporation. Government technical data includes 24 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-00-028-9820 |
| Primary Part Number | 523575 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Goodrich Corporation |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.745 INCHES MINIMUM AND 0.748 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Fifth Diameter | 3.108 INCHES NOMINAL IN |
| Head Height | 0.249 INCHES NOMINAL IN |
| Fastener Length | 3.610 INCHES NOMINAL IN |
| Thread Length | 0.412 INCHES MINIMUM IN |
| Shank Unthreaded Hole Diameter | 0.106 INCHES NOMINAL FIRST HOLE IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.995 INCHES MINIMUM AND 0.997 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.750 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.563 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 2.430 INCHES NOMINAL IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.745 INCHES MINIMUM AND 0.748 INCHES MAXIMUM IN |
| Width Between Flats | 1.438 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.310 INCHES NOMINAL IN |
| Fifth Diameter From Head | 0.620 INCHES MINIMUM AND 0.623 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 5 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 18 |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 2.812 INCHES NOMINAL IN |
| Third Diameter From Head | 0.500 INCHES NOMINAL IN |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 3.437 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 | X |
| Part Number | Manufacturer |
|---|---|
| 523575 PRIMARY | Goodrich Corporation (USA) |
| Reference | Meaning |
|---|---|
| 523575 | 5/9 Secondary reference Bae Systems Technology Solutions & Services Inc. |
| 523575 | 5/9 Secondary reference Hughes Missile Systems Co San Diego |
| 523575 | 3/9 Design control — primary reference Goodrich Corp Dba Goodrich Corp |
| 523575 | 5/9 Secondary reference Tracor Flight Systems Inc Sub of Tracor Inc |
| 523575 | 5/9 Secondary reference General Dynamics Corp Convair Div Lindbergh Field Facility |
NSN 5306-00-028-9820 is a Bolt,externally Relieved Body, manufactured by Goodrich Corporation, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-028-9820 has 1 manufacturer part number on file: 523575 (Goodrich Corporation).
Key specifications for 523575: Fourth Diameter From Head: 0.745 INCHES MINIMUM AND 0.748 INCHES MAXIMUM IN; Distance From Largest Bearing Surface of Head to End of Fifth Diameter: 3.108 INCHES NOMINAL IN; Head Height: 0.249 INCHES NOMINAL IN; Fastener Length: 3.610 INCHES NOMINAL IN. 24 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.