The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-156-5101, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 15 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5306-01-156-5101 |
| Primary Part Number | 708-4674145 ITEM 9 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 1.750 INCHES NOMINAL IN |
| Fastener Length | 5.500 INCHES NOMINAL IN |
| Thread Length | 4.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 2.130 INCHES NOMINAL IN |
| Nominal Thread Diameter | 2.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 4.500 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 1.000 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 1 |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 4 |
| Material | NICKEL ALLOY 400 OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| 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 |
|---|---|
| 708-4674145 ITEM 9 | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 87553-1502 ITEM 9 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5306-01-156-5101 is a Bolt,externally Relieved Body, manufactured by Naval Sea Systems Command, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-156-5101 has 1 manufacturer part number on file: 708-4674145 ITEM 9 (Naval Sea Systems Command).
Key specifications for 708-4674145 ITEM 9: Head Height: 1.750 INCHES NOMINAL IN; Fastener Length: 5.500 INCHES NOMINAL IN; Thread Length: 4.500 INCHES NOMINAL IN; Material Document and Classification: QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 15 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.