The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-308-3603, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Aero International, Llc Dba Ams Engineered Solutions. Government technical data includes 25 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-308-3603 |
| Primary Part Number | 189336 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Aero International, Llc Dba Ams Engineered Solutions |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN |
| Head Height | 0.047 INCHES NOMINAL IN |
| Fastener Length | 1.438 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | ES-091,FSCM 06848 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.792 INCHES NOMINAL IN |
| Hardness Rating | 26.0 ROCKWELL C MINIMUM AND 33.0 ROCKWELL C MAXIMUM OVERALL |
| Shank Unthreaded Hole Diameter | 0.047 INCHES NOMINAL FIRST HOLE IN |
| First Diameter From Head | 0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.469 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 0.516 INCHES NOMINAL IN |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.199 INCHES MINIMUM AND 0.201 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.375 INCHES NOMINAL IN |
| Nonstandard Thread Pitch Diameter | +0.2099 TO 0.2125 INCHES IN |
| Externally Relieved Body Diameter Quantity | 4 |
| Surface Treatment | PASSIVATE OVERALL |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 416F OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 0.656 INCHES NOMINAL IN |
| Third Diameter From Head | 0.308 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN |
| Thread Series Designator | UNS |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 1.376 INCHES NOMINAL ALL HOLES IN |
| Head Diameter | 0.385 INCHES NOMINAL 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 |
|---|---|
| 189336 PRIMARY | Aero International, Llc Dba Ams Engineered Solutions (USA) |
| Reference | Meaning |
|---|---|
| 189336 | 3/9 Design control — primary reference Honeywell International Inc Div Aerospace-South Bend (bendix Dr) |
NSN 5306-00-308-3603 is a Bolt,externally Relieved Body, manufactured by Aero International, Llc Dba Ams Engineered Solutions, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-308-3603 has 1 manufacturer part number on file: 189336 (Aero International, Llc Dba Ams Engineered Solutions).
Key specifications for 189336: Fourth Diameter From Head: 0.166 INCHES MINIMUM AND 0.176 INCHES MAXIMUM IN; Head Height: 0.047 INCHES NOMINAL IN; Fastener Length: 1.438 INCHES NOMINAL IN; Surface Treatment Document and Classification: ES-091,FSCM 06848 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 25 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.