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NSN 5305-00-043-5493, 5305000435493
SCREW,CAP,HEXAGON HEAD

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 000435493
Codification Country
United States
Item Name Code
INC 18257
Criticality
(X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code
(N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.
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DLMS® Summary

National Stock Number 5305-00-043-5493

National Stock Number (NSN) 5305-00-043-5493, or NIIN 000435493, (screw,cap,hexagon head) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, there are no suppliers that are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 18257. [AN EXTERNALLY THREADED FASTENER DESIGNED FOR INSERTION INTO HOLES IN ASSEMBLED PARTS, FOR MATING WITH A PREFORMED INTERNAL THREAD AND FOR TIGHTENING OR RELEASING BY TORQUING THE HEAD. THE THREADED AND UNTHREADED PORTIONS ARE BOTH OF THE SAME NOMINAL DIAMETER OF 0.190 INCH (5 MM) OR LARGER. HEAD DIMENSIONS AND SIZES OF THREADED AND UNTHREADED PORTIONS SHALL CONFORM TO INTERNATIONALLY RECOGNIZED FASTENER STANDARDS. THE THREAD LENGTH BEING THE CONTROLLED DIMENSION, THE GRIP LENGTH IS NOT SPECIFIED. A LOCKING FEATURE MAY BE INCORPORATED IN THE DESIGN OF THE HEAD OR THREADS. THE HEAD IS NOT DESIGNED TO BE HELD OR DRIVEN WITH AN INSERTED DRIVER OR BY THE THUMB AND FINGERS. EXCLUDES:BOLT,MACHINE; BOLT,EXTERNALLY RELIEVED BODY; BOLT,INTERNAL WRENCHING; AND SCREW,CAP,SOCKET HEAD.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5305000435493 contains an unknown precious metal.

This NSN is associated to Schedule B 7318152000: bolts and bolts and their nuts or washers exported in the same shipment. The Schedule B End Use is listed as iron and steel products, other. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.

This information was last updated on .


Technical Characteristics

DISTANCE FROM HEAD LARGEST BEARING SURFACE TO SHANK HOLE CENTER
(CRZS) 1.516 INCHES NOMINAL FIRST HOLE
FASTENER LENGTH
(AASB) 1.562 INCHES MINIMUM AND 1.625 INCHES MAXIMUM
HARDNESS RATING
(CQFM) 95.5 ROCKWELL B MINIMUM OVERALL AND 100.0 ROCKWELL B MAXIMUM OVERALL
HEAD HEIGHT
(AASU) 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM
HEAD STYLE
(AASK) HEXAGON
NOMINAL THREAD DIAMETER
(AHYM) 0.250 INCHES
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) SAE GR 1 OR 2 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL OVERALL
MINIMUM TENSILE STRENGTH
(CQBC) 55000 POUNDS PER SQUARE INCH
MINIMUM YIELD STRENGTH
(CQHQ) 55000 POUNDS PER SQUARE INCH
SHANK UNTHREADED HOLE DIAMETER
(AAWB) 0.076 INCHES NOMINAL FIRST HOLE
THREAD CLASS
(AAJD) 2A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM
THREAD QUANTITY PER INCH
(CMLP) 20
THREAD SERIES DESIGNATOR
(THSD) UNC
WIDTH BETWEEN FLATS
(AATB) 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM

Manufacturer Part Numbers


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