The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-010-1053, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-010-1053 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Status | ACTIVE |
| Head Height | 0.190 INCHES NOMINAL IN |
| Fastener Length | 2.960 INCHES NOMINAL IN |
| Thread Length | 0.560 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN |
| Hardness Rating | 79.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 83.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL |
| Material Document and Classification | -3603,AVCO LYCOMING DIV MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 1.520 INCHES MINIMUM AND 1.560 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 2.360 INCHES MINIMUM AND 2.400 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.316 INCHES MINIMUM AND 0.319 INCHES MAXIMUM IN |
| Width Between Flats | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 1.250 INCHES MINIMUM AND 1.290 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 3 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 24 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Third Diameter From Head | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| 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 |
| Reference | Meaning |
|---|---|
| 1-140-168-03 | 5/9 Secondary reference U.S. Government activity |
| 1-140-168-04 | C/1 Advisory reference — outside the item-of-supply concept Ozark Aeroworks Llc |
| 1-140-168-03 | 5/9 Secondary reference U.S. Government activity |
| 1-140-168-04 | 5/9 Secondary reference Sps Technologies, Llc Dba PB Fasteners |
| 1-140-168-04 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5306-01-010-1053 is a Bolt,externally Relieved Body, classified under FSC 5306, Bolts. Status: active.
Key specifications for 5306-01-010-1053: Head Height: 0.190 INCHES NOMINAL IN; Fastener Length: 2.960 INCHES NOMINAL IN; Thread Length: 0.560 INCHES MINIMUM AND 0.600 INCHES MAXIMUM IN; Hardness Rating: 79.0 ROCKWELL SUPERFICIAL 15-N MINIMUM AND 83.0 ROCKWELL SUPERFICIAL 15-N MAXIMUM OVERALL. 20 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.