5180-00-478-0810 TOOL KIT,AIRCRAFT MAINTENANCE Index 4920-00-478-0812 ADAPTER SET,TEST

National Stock Number:
5310-00-478-0811

Federal Supply Class:
5310

National Item Identification Number:
004780811

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:
S10-15-300778286SIKORSKY AIRCRAFT CORPORATION


Techincal Specification:
DRIVE POINT DEPTH0.047 INCHES MINIMUM AND 0.078 INCHES MAXIMUM
DRIVE POINT QUANTITY6
DRIVE POINT WIDTH0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM
DRILLED HOLE DIAMETER0.094 INCHES NOMINAL
COUNTERBORE DIAMETER2.422 INCHES MINIMUM AND 2.453 INCHES MAXIMUM NUT
COUNTERSINK ANGLE89.5 DEGREES MINIMUM AND 90.5 DEGREES MAXIMUM NUT
HARDNESS RATING25.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM
HOLE CONFIGURATION STYLECONFIGURATION F
HOLE TYPE AND QUANTITY1 DRILLED
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-684 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALSTEEL COMP 4130 OVERALL
NOMINAL THREAD SIZE2.312 INCHES
NUT COUNTERBORE DEPTH0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM NUT
NUT DIAMETER2.734 INCHES MINIMUM AND 2.766 INCHES MAXIMUM
NUT THICKNESS0.740 INCHES MINIMUM AND 0.750 INCHES MAXIMUM
NUT STYLEROUND
SURFACE TREATMENTOXIDE OVERALL
THREAD CLASS3B
THREAD DIRECTIONRIGHT-HAND
THREAD SERIESUNS
THREAD QUANTITY PER INCH16


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