5310-01-129-3376 NUT,PLAIN,ROUND Index 5310-01-129-3378 NUT,PLAIN,RECTANGULAR

National Stock Number:
5310-01-129-3377

Federal Supply Class:
5310

National Item Identification Number:
011293377

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.)


Manufacturer Information:
65391-11723-10178286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
THREAD SERIESUNS
NOMINAL THREAD SIZE2.751 INCHES
THREAD QUANTITY PER INCH18
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
MATERIALSTEEL COMP 4340 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-500,CONDD C MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTOXIDE FILM OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING34.0 ROCKWELL C MINIMUM AND
38.0 ROCKWELL C MAXIMUM
NUT STYLEROUND
FLANGE THICKNESS0.250 INCHES NOMINAL
DRIVE POINT DEPTH0.131 INCHES MINIMUM AND
0.137 INCHES MAXIMUM
NUT DIAMETER3.060 INCHES MINIMUM AND
3.074 INCHES MAXIMUM
NUT THICKNESS0.550 INCHES NOMINAL
DRIVE POINT WIDTH0.240 INCHES MINIMUM AND
0.250 INCHES MAXIMUM
UNDERCUT THICKNESS0.060 INCHES NOMINAL
DRIVE POINT QUANTITY8
COUNTERSINK ANGLE90.0 DEGREES NOMINAL BOTH ENDS
THE MANUFACTURERS DATA
MANUFACTURERS CODE78286
DESIGN CONTROL REFERENCE65391-11723-101


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