5305-00-948-3239 SCREW,MACHINE Index 5306-00-948-3241 BOLT,U

National Stock Number:
5306-00-948-3240

Federal Supply Class:
5306

National Item Identification Number:
009483240

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:
1-140-168-0206752BRYS INSTRUMENT CORP
1-140-168-0291547HONEYWELL INTERNATIONAL INC DBA ENGINES & SYSTEMS
1-140-168-0299193HONEYWELL INTERNATIONAL INC.
1-140-168-02D0272ROLLS-ROYCE DEUTSCHLAND LTD & CO KG DBA ROLLS-ROYCE DEUTSCHLAND


Techincal Specification:
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER1.520 INCHES MINIMUM AND 1.560 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF THIRD DIAMETER2.360 INCHES MINIMUM AND 2.400 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER1.250 INCHES MINIMUM AND 1.290 INCHES MAXIMUM
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY3
FASTENER LENGTH2.950 INCHES MINIMUM AND 2.970 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
HARDNESS RATING33.0 ROCKWELL C MINIMUM AND 35.5 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
HEAD STYLEHEXAGON
MATERIALSTEEL COMP 4140 OVERALL
NOMINAL THREAD DIAMETER0.312 INCHES
PRECIOUS MATERIALSILVER
SECOND DIAMETER FROM HEAD0.316 INCHES MINIMUM AND 0.319 INCHES MAXIMUM
WIDTH BETWEEN FLATS0.492 INCHES MINIMUM AND 0.502 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONAMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENTSILVER OVERALL
THIRD DIAMETER FROM HEAD0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM
THREAD DIRECTIONRIGHT-HAND
THREAD CLASS2A
THREAD LENGTH0.550 INCHES MINIMUM AND 0.610 INCHES MAXIMUM
THREAD SERIES DESIGNATORUNF
THREAD QUANTITY PER INCH24


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