At NSN Unlimited, we maintain a large database of parts 20-057-4-21D, 20 057 4 21D with NSN 5306-01-026-1803 used in civil and defense applications for the aerospace, marine, and commercial manufactured by Bell Helicopter Textron Inc, Alcoa Global Fasteners Inc, Aerospace Rivet Mfrs Corp, Sps Technologies Ltd, Saturn Fasteners Inc. Utilize our interface to browse items by part number, part type, manufacturer, and more. Obtain insights on top MRO and FBO services, Manufacturer profiles, and part catalogs.
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| Alternative NSN: 5306-01-026-1803 |
| Item Name: Bolt Shear |
| FSG: 53 Hardware and Abrasives |
| Federal Supply Class (FSC): 5306 Bolts |
| NIIN: 010261803 |
| NCB Code: USA (01) |
| Manufacturers: Bell Helicopter Textron Inc , Alcoa Global Fasteners Inc , Aerospace Rivet Mfrs Corp , Sps Technologies Ltd , Saturn Fasteners Inc , Lfc Industries Inc , Heartland Precision Fasteners Inc |
| Part No | NSN | Item Name | Manufacturer | QTY | RFQ |
|---|---|---|---|---|---|
| 20-057-4-21D | 5306-01-026-1803 | bolt shear | bell helicopter textron inc | Avl | RFQ |
| 20-057-4-21D | 5306-01-026-1803 | bolt shear | alcoa global fasteners inc | Avl | RFQ |
| 20-057-4-21D | 5306-01-026-1803 | bolt shear | aerospace rivet mfrs corp | Avl | RFQ |
| 20-057-4-21D | 5306-01-026-1803 | bolt shear | sps technologies ltd | Avl | RFQ |
| 20-057-4-21D | 5306-01-026-1803 | bolt shear | saturn fasteners inc | Avl | RFQ |
| 20-057-4-21D | 5306-01-026-1803 | bolt shear | lfc industries inc | Avl | RFQ |
| 20 057 4 21D | 5306-01-026-1803 | bolt shear | heartland precision fasteners inc | Avl | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A |
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.425 INCHES NOMINAL |
| AASB | FASTENER LENGTH | 1.737 INCHES NOMINAL |
| AASK | HEAD STYLE | HEXAGON |
| AASU | HEAD HEIGHT | 0.125 INCHES MINIMUM AND 0.140 INCHES MAXIMUM |
| AATB | WIDTH BETWEEN FLATS | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM |
| AAUR | GRIP DIAMETER | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM |
| AAWB | SHANK UNTHREADED HOLE DIAMETER | 0.076 INCHES MINIMUM FIRST HOLE AND 0.086 INCHES MAXIMUM FIRST HOLE |
| AHYM | NOMINAL THREAD DIAMETER | 0.250 INCHES |
| ANEE | GRIP LENGTH | 1.312 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 28 |
| CQBC | MINIMUM TENSILE STRENGTH | 160000 POUNDS PER SQUARE INCH |
| CQFM | HARDNESS RATING | 36.0 ROCKWELL C MINIMUM OVERALL AND 40.0 ROCKWELL C MAXIMUM OVERALL |
| CRZS | DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER | 1.559 INCHES NOMINAL FIRST HOLE |
| MATT | MATERIAL | STEEL OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-B-7838 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| SFTT | SURFACE TREATMENT | CADMIUM OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | QQ-P-416,TYPE 2,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNJF |
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