NSN 5305-00-193-6758

Part Details | EXTERNALLY RELIEVED BODY SCREW

5305-00-193-6758 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.

Alternate Parts: 2630533, 5305-00-193-6758, 00-193-6758, 5305001936758, 001936758

Supply Group (FSG) NSN Assigned NIIN Item Name Code (INC)
53MAR 16, 197300-193-675801852 ( SCREW, EXTERNALLY RELIEVED BODY )
REFERENCE DRAWINGS & PICTURES

CROWNED HEXAGON

CROSS RECESS TYPE 1

Cross Reference | NSN 5305-00-193-6758
Part Number Cage Code Manufacturer
263053380064NAVAL SHIP SYSTEMS COMMAND
Technical Data | NSN 5305-00-193-6758
Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER0.164 INCHES
THREAD QUANTITY PER INCH32
THREAD CLASS2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH0.219 INCHES MINIMUM
FASTENER LENGTH1.375 INCHES NOMINAL
MINIMUM TENSILE STRENGTH57000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH25000 POUNDS PER SQUARE INCH
HEAD STYLE4 CROWNED HEXAGON
HEAD DIAMETER0.309 INCHES MINIMUM AND 0.321 INCHES MAXIMUM
HEAD HEIGHT0.085 INCHES MINIMUM AND 0.095 INCHES MAXIMUM
INTERNAL DRIVE STYLE4 CROSS RECESS TYPE 1
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY1
FIRST DIAMETER FROM HEAD0.118 INCHES MINIMUM AND 0.120 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER1.062 INCHES NOMINAL