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National Stock Number:
5310-01-064-6566
Federal Supply Class:
5310
National Item Identification Number:
010646566
Description:
NUT,SELF-LOCKING,CASTELLATED,DOU
Detail:
A NUT HAVING 12 DRIVE POINTS, 24 SIDES, FLAT ON THE BOTTOM AND HAVING A SLOTTED CYLINDRICAL OR DOME SHAPED UPPER PORTION. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. THE SLOTS WHEN USED IN CONJUNCTION WITH A SOLID OR SPLIT (COTTER) PIN, ACT AS AN EXTRA "FAIL SAFE" FEATURE IN CRITICAL APPLICATIONS.
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Manufacturer Information:
| 78238-524 | 56878 | SPS TECHNOLOGIES, LLC | | HS2370-5 | 15653 | HOWMET GLOBAL FASTENING SYSTEMS INC | | HS2370-5 | R1120 | SATAIR A/S | | ST3M749-5 | 15653 | HOWMET GLOBAL FASTENING SYSTEMS INC | | ST3M749-5 | 76301 | THE BOEING COMPANY | | VN3000AB054 | 92215 | HOWMET GLOBAL FASTENING SYSTEMS INC |
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Techincal Specification:
| BEARING SURFACE TYPE | CHAMFERED | | HARDNESS RATING | 40.0 ROCKWELL C MINIMUM AND 44.0 ROCKWELL C MAXIMUM | | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN | | NUT STYLE | CASTELLATED, DOUBLE HEXAGON | | NUT HEIGHT | 0.276 INCHES NOMINAL | | MATERIAL | STEEL COMP H11 OVERALL | | NOMINAL THREAD SIZE | 0.312 INCHES | | WIDTH ACROSS FLATS | 0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM | | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-8837,TY II,CL 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | THREAD CLASS | 3B | | THREAD DIRECTION | RIGHT-HAND | | THREAD SERIES | UNJF | | THREAD PITCH IN MILLIMETERS | 1.058 | | THREAD QUANTITY PER INCH | 24 |
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