Product Details | EXTERNALLY RELIEVED BODY SCREW

5305-00-638-1593 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.

Part Alternates: SMB152371, 318148, 31848, 5305-00-638-1593, 00-638-1593, 5305006381593, 006381593

Hardware and Abrasives | Screws

Supply Group (FSG) NSN Assign. NIIN
53 00-638-1593

Drawings & Photos | NSN 5305-00-638-1593


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Technical Data | NSN 5305-00-638-1593

Characteristic Specifications
THREAD SERIES DESIGNATOR UNC
NOMINAL THREAD DIAMETER 0.190 INCHES
THREAD QUANTITY PER INCH 24
THREAD CLASS 2A
THREAD DIRECTION RIGHT-HAND
THREAD LENGTH 0.249 INCHES MINIMUM AND 0.297 INCHES MAXIMUM
FASTENER LENGTH 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM
MATERIAL STEEL COMP 416 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION QQ-S-763,CLASS 6,TYPE C FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SURFACE TREATMENT PASSIVATE OVERALL
MINIMUM YIELD STRENGTH 65000 POUNDS PER SQUARE INCH
HEAD DIAMETER 0.205 INCHES MINIMUM AND 0.215 INCHES MAXIMUM
HEAD HEIGHT 0.359 INCHES MINIMUM AND 0.391 INCHES MAXIMUM
INTERNAL DRIVE STYLE D14 SLOT
EXTERNALLY RELIEVED BODY DIAMETER QUANTITY 1
FIRST DIAMETER FROM HEAD 0.121 INCHES MINIMUM AND 0.131 INCHES MAXIMUM
DISTANCE FROM LARGEST BEARING SURFACE OF HEAD TO END OF FIRST DIAMETER 0.094 INCHES MINIMUM AND 0.110 INCHES MAXIMUM

Restrictions/Controls & Freight Information | NSN 5305-00-638-1593

Category Code Description
Hazardous Material Indicator CodeNThere is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials
Category Code Description
No Freight Information