| Item Name | Bolt Fluid Passage |
| Federal Supply Group (FSG) | Pipe Tubing Hose and Fittings |
| Federal Supply Class (FSC) | 4730 Hose Pipe Tube Lubrication and Railing Fittings |
| National Item Identification Number (NIIN) | 00-756-2256 (007562256) |
| NCB Code | USA (00) |
| Manufacturer | Snark Products Inc, Tech Aero Inc, National Aerospace Standards Com, Finmeccanica Spa Helicopters, Collins Engineering Corp |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| NAS551-4H | snark products inc | bolt fluid passage | RFQ |
| NAS551-4H | tech aero inc | bolt fluid passage | RFQ |
| NAS551-4H | national aerospace standards com | bolt fluid passage | RFQ |
| NAS551-4H | finmeccanica spa helicopters | bolt fluid passage | RFQ |
| NAS551-4H | collins engineering corp | bolt fluid passage | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAWX | CONCENTRIC HOLE DEPTH | 0.937 INCHES NOMINAL |
| ACKM | FIRST END CONNECTION TYPE | THREADED EXTERNAL TUBE |
| ACKN | FIRST END STYLE DESIGNATOR | INVERTED FLARE |
| ASDB | WIDTH ACROSS FLATS | 0.688 INCHES NOMINAL |
| BBKL | FIRST DIAMETER FROM WRENCHING FEATURE | 0.435 INCHES NOMINAL |
| BBKR | LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO END OF FIRST DIAMETER | 0.781 INCHES NOMINAL |
| CQBC | MINIMUM TENSILE STRENGTH | 125000 POUNDS PER SQUARE INCH |
| CQYM | FIRST END NOMINAL THREAD SIZE | 0.437 INCHES |
| MATT | MATERIAL | STEEL |
| SFTT | SURFACE TREATMENT | CADMIUM |
| AAQL | BODY STYLE | PLAIN |
| AAXC | CONCENTRIC HOLE DIAMETER | 0.172 INCHES NOMINAL |
| ABHP | OVERALL LENGTH | 1.375 INCHES NOMINAL |
| ACLK | FIRST END THREAD CLASS | 3A |
| ACLL | FIRST END THREAD DIRECTION | RIGHT-HAND |
| ATKZ | FIRST END THREAD LENGTH | 0.406 INCHES NOMINAL |
| BBDF | WRENCHING FEATURE STYLE | HEXAGON |
| BBKY | FIRST RADIAL FLUID HOLE DIAMETER | 0.172 INCHES NOMINAL |
| BBLB | DISTANCE FROM FIRST RADIAL HOLE CENTER TO END OF BOLT | 0.796 INCHES NOMINAL |
| BBLD | LENGTH FROM BEARING SURFACE OF WRENCHING FEATURE TO BOLT END | 1.187 INCHES NOMINAL |
| BBLF | WRENCHING FEATURE HEIGHT | 0.188 INCHES NOMINAL |
| CQMM | FIRST END THREAD SERIES DESIGNATOR | UNF |
| CQPR | FIRST END SEAT ANGLE | 45.0 DEGREES NOMINAL |
| ZZZK | SPECIFICATION/STANDARD DATA | 80205-NAS551 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Relevant Components for NSN - 4730-00-756-2256, 4730007562256 | ||||
| 4730-01-436-2114 (4730014362114) | 4710-01-202-7787 (4710012027787) | 4720-01-526-5273 (4720015265273) | 4720-01-408-1219 (4720014081219) | |
| 4730-01-622-4160 (4730016224160) | 4720-01-589-9450 (4720015899450) | 4720-01-201-5242 (4720012015242) | 4730-00-409-1688 (4730004091688) | |
| 4720-01-137-0340 (4720011370340) | 4710-01-512-8267 (4710015128267) | 4720-01-703-1112 (4720017031112) | 4730-01-478-4701 (4730014784701) | |
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