4920-00-187-0574 DIAPHRAGM AND TUBE Index 3040-00-187-0580 SHAFT,SHOULDERED

National Stock Number:
5305-00-187-0575

Federal Supply Class:
5305

National Item Identification Number:
001870575

Description:
SCREW,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 undercut for thread relief). It is No. 0 (0.060 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. 10 (0.190 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.


Manufacturer Information:
4544450001089944ELBITAMERICA, INC.


Techincal Specification:
DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER0.750 INCHES MINIMUM FIRST HOLE AND 0.780 INCHES MAXIMUM FIRST HOLE
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER0.250 INCHES NOMINAL
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF SECOND DIAMETER0.816 INCHES NOMINAL
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY2
FASTENER LENGTH1.030 INCHES MINIMUM AND 1.035 INCHES MAXIMUM
FIRST DIAMETER FROM HEAD0.243 INCHES MINIMUM AND 0.247 INCHES MAXIMUM
HEAD HEIGHT0.125 INCHES NOMINAL
HEAD DIAMETER0.485 INCHES NOMINAL
HEAD STYLEBEVEL-CONICAL
INTERNAL DRIVE STYLESLOT
MATERIALSTEEL COMP 303 OVERALL
POINT STYLEFLAT
PROPRIETARY CHARACTERISTICSPACS
NOMINAL THREAD DIAMETER0.190 INCHES
SECOND DIAMETER FROM HEAD0.155 INCHES NOMINAL
SHANK UNTHREADED HOLE DIAMETER0.060 INCHES MINIMUM FIRST HOLE AND 0.064 INCHES MAXIMUM FIRST HOLE
SPECIAL FEATURESHOLE IN POINT 0.062-0.064 IN. DIA 0.281 IN. DEPTH; 32.0 HARDNESS ON CHAMFER PORTION OF SHOULDER
SURFACE TREATMENTPASSIVATE OVERALL
THREAD CLASS2A
THREAD DIRECTIONRIGHT-HAND
THREAD LENGTH0.219 INCHES NOMINAL
THREAD QUANTITY PER INCH32
THREAD SERIES DESIGNATORUNF


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