The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-440-2122, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is General Electric Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-00-440-2122 |
| Primary Part Number | 105B3019P3 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | General Electric Company |
| Status | ACTIVE |
| Extended Washer Thickness | 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN |
| Head Height | 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN |
| Fastener Length | 0.990 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | AMS 2485 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Extended Washer Diameter | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Thread Length | 0.400 INCHES MINIMUM AND 0.430 INCHES MAXIMUM IN |
| Shank Unthreaded Hole Diameter | 0.063 INCHES NOMINAL FIRST HOLE IN |
| Hole Configuration Style | ROUND |
| Material Document and Classification | C50T22,FSCM 96570 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.200 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | DOUBLE HEXAGON W/HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.367 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.380 INCHES MINIMUM AND 0.390 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Surface Treatment | OXIDE OVERALL |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL OVERALL |
| Hole Quantity | 1 |
| Thread Series Designator | UNF |
| Distance From Head Largest Bearing Surface to Shank Hole Center | 0.100 INCHES NOMINAL FIRST HOLE IN |
| Hole Type | DRILLED |
| Hole Diameter | 0.206 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 |
|---|---|
| 105B3019P3 | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 105B3019P3 | 3/9 Design control — primary reference General Electric Company |
NSN 5306-00-440-2122 is a Bolt,externally Relieved Body, manufactured by General Electric Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-440-2122 has 1 manufacturer part number on file: 105B3019P3 (General Electric Company).
Key specifications for 105B3019P3: Extended Washer Thickness: 0.050 INCHES MINIMUM AND 0.060 INCHES MAXIMUM IN; Head Height: 0.270 INCHES MINIMUM AND 0.280 INCHES MAXIMUM IN; Fastener Length: 0.990 INCHES MINIMUM AND 1.030 INCHES MAXIMUM IN; Surface Treatment Document and Classification: AMS 2485 ASSN STD 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.