The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-01-142-6483, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company. Government technical data includes 17 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5306-01-142-6483 |
| Primary Part Number | 2178654 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
| Status | ACTIVE |
| Head Height | 0.281 INCHES NOMINAL IN |
| Fastener Length | 1.125 INCHES NOMINAL IN |
| Thread Length | 0.555 INCHES NOMINAL IN |
| Material Document and Classification | AMS7471 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.519 INCHES MINIMUM AND 0.520 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.664 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.405 INCHES MINIMUM AND 0.445 INCHES MAXIMUM IN |
| Width Between Flats | 0.746 INCHES NOMINAL IN |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.570 INCHES NOMINAL IN |
| Externally Relieved Body Diameter Quantity | 2 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 20 |
| Material | NICKEL ALLOY OVERALL |
| 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 |
| Part Number | Manufacturer |
|---|---|
| 2178654 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 2178654 | Morton Grinding, Inc Dba Morton Manufacturing (USA) |
| 2178654 PRIMARY | Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company (USA) |
| 2178654 | Bristol Industries, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2178654 | 5/9 Secondary reference Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| 2178654 | 5/2 Secondary reference U.S. Government activity |
| 2178654 | 5/9 Secondary reference Blanc Aircraft Fasteners Inc |
| 2178654 | 5/9 Secondary reference Edwards Brothers Inc. |
NSN 5306-01-142-6483 is a Bolt,externally Relieved Body, manufactured by Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company, classified under FSC 5306, Bolts. Status: active.
NSN 5306-01-142-6483 has 4 manufacturer part numbers on file: 2178654 (Sps Technologies, Llc Dba PB Fasteners), 2178654 (Morton Grinding, Inc Dba Morton Manufacturing), 2178654 (Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company), 2178654 (Bristol Industries, Llc).
Key specifications for 2178654: Head Height: 0.281 INCHES NOMINAL IN; Fastener Length: 1.125 INCHES NOMINAL IN; Thread Length: 0.555 INCHES NOMINAL IN; Material Document and Classification: AMS7471 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 17 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.