The Bolt,externally Relieved Body, cataloged under National Stock Number 5306-00-854-0691, is classified within Federal Supply Class 5306 (Bolts) of the Hardware and Abrasives group. The manufacturer of record is Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney. Government technical data includes 22 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5306-00-854-0691 |
| Primary Part Number | 496345 |
| Item Name | Bolt,externally Relieved Body |
| FSC / FSG | 5306 / 53 — Bolts |
| Manufacturer | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney |
| Status | ACTIVE |
| Fourth Diameter From Head | 0.263 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN |
| Head Height | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Fastener Length | 2.021 INCHES MINIMUM AND 2.042 INCHES MAXIMUM IN |
| Thread Length | 0.510 INCHES MINIMUM IN |
| Hardness Rating | 35.0 ROCKWELL C MINIMUM AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | AMS 5616 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| First Diameter From Head | 0.372 INCHES MINIMUM AND 0.373 INCHES MAXIMUM IN |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.371 INCHES MINIMUM AND 0.402 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Distance From Largest Bearing Surface of Head to End of Third Diameter | 1.281 INCHES MINIMUM AND 1.312 INCHES MAXIMUM IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Second Diameter From Head | 0.263 INCHES MINIMUM AND 0.264 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 | 0.191 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN |
| Externally Relieved Body Diameter Quantity | 4 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | STEEL CORROSION RESISTING OVERALL |
| Distance From Largest Bearing Surface of Head to End of Fourth Diameter | 1.511 INCHES MINIMUM AND 1.532 INCHES MAXIMUM IN |
| Third Diameter From Head | 0.190 INCHES MINIMUM AND 0.200 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 |
| Part Number | Manufacturer |
|---|---|
| 496345 | Kito Mfg Co. Ltd (JPN) |
| 496345 PRIMARY | Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney (USA) |
| 496345 | Crain Enterprises Inc (USA) |
| Reference | Meaning |
|---|---|
| 496345 | 5/9 Secondary reference Kito Mfg Co. Ltd |
| 496345 | 5/9 Secondary reference Kwik File Storage Systems Llc |
| 496345 | 5/9 Secondary reference Alliant Techsystems Inc |
| 496345 | 5/9 Secondary reference Turbo Power & Marine System Inc Sub of United Technologies Corp |
NSN 5306-00-854-0691 is a Bolt,externally Relieved Body, manufactured by Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney, classified under FSC 5306, Bolts. Status: active.
NSN 5306-00-854-0691 has 3 manufacturer part numbers on file: 496345 (Kito Mfg Co. Ltd), 496345 (Rtx Corporation Dba Pratt & Whitney Div Pratt &whitney), 496345 (Crain Enterprises Inc).
Key specifications for 496345: Fourth Diameter From Head: 0.263 INCHES MINIMUM AND 0.264 INCHES MAXIMUM IN; Head Height: 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN; Fastener Length: 2.021 INCHES MINIMUM AND 2.042 INCHES MAXIMUM IN; Thread Length: 0.510 INCHES MINIMUM IN. 22 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.