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National Stock Number:
5310-00-637-1009
Federal Supply Class:
5310
National Item Identification Number:
006371009
Description:
NUT,PLAIN,ROUND
Detail:
A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use POST, ELECTRICAL-MECHANICAL EQUIPMENT. See also NUT (1), PLAIN, KNURLED. (When height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)
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Manufacturer Information:
| S12-10-3031 | 78286 | SIKORSKY AIRCRAFT CORPORATION |
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Techincal Specification:
| THREAD SERIES | UNS | | NOMINAL THREAD SIZE | 2.750 INCHES | | THREAD QUANTITY PER INCH | 18 | | THREAD CLASS | 3B | | THREAD DIRECTION | RIGHT-HAND | | MATERIAL | STEEL COMP 4130 OR | | STEEL COMP 4140 OVERALL | | MATERIAL DOCUMENT AND CLASSIFICATION | MIL-S-5626 MIL SPEC 2ND MATERIAL RESPONSE OVERALL | | HARDNESS RATING | 26.0 ROCKWELL C MINIMUM AND | | 32.0 ROCKWELL C MAXIMUM | | NUT STYLE | ROUND | | DRIVE POINT DEPTH | 0.172 INCHES MINIMUM AND | | 0.203 INCHES MAXIMUM | | NUT DIAMETER | 3.984 INCHES MINIMUM AND | | 4.016 INCHES MAXIMUM | | NUT THICKNESS | 0.578 INCHES MINIMUM AND | | 0.609 INCHES MAXIMUM | | DRIVE POINT WIDTH | 0.359 INCHES MINIMUM AND | | 0.391 INCHES MAXIMUM | | DRIVE POINT QUANTITY | 8 | | NUT COUNTERBORE DEPTH | 0.062 INCHES MINIMUM AND | | 0.125 INCHES MAXIMUM NUT | | COUNTERBORE DIAMETER | 2.9743 INCHES MINIMUM AND | | 2.9943 INCHES MAXIMUM NUT | | COUNTERSINK ANGLE | 89.5 DEGREES MINIMUM AND | | 90.5 DEGREES MAXIMUM NUT | | THE MANUFACTURERS DATA | | | MANUFACTURERS CODE | 78286 | | DESIGN CONTROL REFERENCE | S12-10-3031 |
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