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National Stock Number:
5310-00-868-3293
Federal Supply Class:
5310
National Item Identification Number:
008683293
Description:
NUT,SELF-LOCKING,SINGLE BALL SEA
Detail:
A NUT HAVING ONE CONVEX, SPHERICAL BEARING SURFACE AND 6 FLAT SIDES. ITEMS MAY HAVE A REMOVABLE COLLAR. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER. SEE ALSO NUT (1), SELF-LOCKING, CONE SEAT, HEXAGON.
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Manufacturer Information:
| 3M138-4 | 1V757 | WESCO AIRCRAFT HARDWARE CORP. | | 3M138-4 | 56878 | SPS TECHNOLOGIES, LLC | | RM52LH2935-048 | 019L2 | ESNA, LLC | | 67992N428 | 56878 | SPS TECHNOLOGIES, LLC | | RM52LH2935-048 | 72962 | HARVARD INDUSTRIES INC | | 3M138-4 | 76301 | THE BOEING COMPANY |
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Techincal Specification:
| THREAD SERIES | UNF | | NOMINAL THREAD SIZE | 0.250 INCHES | | THREAD QUANTITY PER INCH | 28 | | THREAD CLASS | 3B | | THREAD DIRECTION | RIGHT-HAND | | MATERIAL | STEEL OVERALL | | SURFACE TREATMENT | CADMIUM OVERALL | | NUT STYLE | SINGLE BALL SEAT, HEXAGON | | BALL SEAT RADIUS | 0.265 INCHES NOMINAL | | NUT HEIGHT | 0.330 INCHES MAXIMUM | | WIDTH ACROSS FLATS | 0.428 INCHES MINIMUM AND | | 0.440 INCHES MAXIMUM | | LOCKING FEATURE | PREVAILING TORQUE ALL METAL DESIGN | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 56878 | | DESIGN CONTROL REFERENCE | 3M138-4 |
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