5310-00-441-8420 WASHER,FLAT Index 5325-00-441-8436 GROMMET

National Stock Number:
5306-00-441-8428

Federal Supply Class:
5306

National Item Identification Number:
004418428

Description:
BOLT,EXTERNALLY RELIEVED BODY

Detail:
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is No. 10 (0.190 IN.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes BOLT, INTERNAL WRENCHING and THUMBSCREW. See also SCREW, EXTERNALLY RELIEVED BODY.


Manufacturer Information:
2682-731435LUCAS AEROSPACE POWER EQUIPMENT CORPORATION
2682-73CPE0SAFRAN POWER USA LLC


Techincal Specification:
THREAD SERIES DESIGNATORUNF
NOMINAL THREAD DIAMETER0.250 INCHES
THREAD QUANTITY PER INCH28
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.750 INCHES MINIMUM
FASTENER LENGTH3.375 INCHES NOMINAL
MATERIALSTEEL COMP 2330 OVERALL
SURFACE TREATMENTCADMIUM OVERALL
HARDNESS RATING32.0 ROCKWELL C MINIMUM AND
36.0 ROCKWELL C MAXIMUM OVERALL
MINIMUM TENSILE STRENGTH140000 POUNDS PER SQUARE INCH
HEAD STYLEHEXAGON
HEAD HEIGHT0.219 INCHES NOMINAL
WIDTH BETWEEN FLATS0.438 INCHES NOMINAL
HOLE CONFIGURATION STYLEHEXAGON FLATS
HOLE TYPEDRILLED
HOLE QUANTITY6
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY2
FIRST DIAMETER FROM HEAD0.249 INCHES NOMINAL
SECOND DIAMETER FROM HEAD0.225 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.188 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER2.625 INCHES NOMINAL
THE MANUFACTURERS DATA
MANUFACTURERS CODE31435
DESIGN CONTROL REFERENCE2682-7


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