Part Number: SM-B-436173

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CONDITION:
NS
US ARMY COMMUNICATIONS & ELECTRONICS MATERIEL READINESS COMMAND LOGISTICS ENGINEERING DIR80063
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.106 INCHES NOMINAL
FASTENER LENGTH0.199 INCHES NOMINAL
HEAD STYLEFLAT CHAMFER
HEAD DIAMETER0.385 INCHES NOMINAL
HEAD HEIGHT0.171 INCHES NOMINAL
FIRST DIAMETER FROM HEAD0.105 INCHES MINIMUM AND 0.107 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.093 INCHES NOMINAL
INTERNAL DRIVE STYLESLOT
NOMINAL THREAD DIAMETER0.138 INCHES
THREAD QUANTITY PER INCH40
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
SPECIAL FEATURESSTRAIGHT KNURL
MATERIALSTEEL COMP 303 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENTOXIDE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-C-13924 CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD SERIES DESIGNATORUNF
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 undercut for thread relief). It is No. ( . 6 IN.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below No. 1 ( .19 IN.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also BOLT, EXTERNALLY RELIEVED BODY and BOLT, INTERNAL WRENCHING.