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NSN 5305-01-043-0553, 5305010430553
SCREW,CAP,HEXAGON HEAD

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 010430553
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 5305-01-043-0553

National Stock Number (NSN) 5305-01-043-0553, or NIIN 010430553, (screw,cap,hexagon head) was assigned June 19, 1977 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of May 03, 2017. There have been 3 contracts issued for this part number, with 3 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 2 different suppliers. The last contract numbers awarded were: SPE4A517P6415, SPE4A516V0546, SPE4A516V0546, SPM4A612MNK82. The total value of the awarded contracts has been US$ 1,747.50.

This NSN is unique to one weapons system.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Aug 16, 2008, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.

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 5305010430553 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) 0.870 INCHES MINIMUM AND 0.890 INCHES MAXIMUM FIRST HOLE
FASTENER LENGTH
(AASB) 1.430 INCHES MINIMUM AND 1.450 INCHES MAXIMUM
HEAD HEIGHT
(AASU) 0.180 INCHES MINIMUM AND 0.200 INCHES MAXIMUM
HEAD STYLE
(AASK) HEXAGON
MATERIAL
(MATT) STEEL COMP 302 OVERALL
NOMINAL THREAD DIAMETER
(AHYM) 0.190 INCHES
SHANK UNTHREADED HOLE DIAMETER
(AAWB) 0.062 INCHES MINIMUM AND 0.065 INCHES MAXIMUM FIRST HOLE
WIDTH BETWEEN FLATS
(AATB) 0.240 INCHES MINIMUM AND 0.260 INCHES MAXIMUM
SURFACE TREATMENT
(SFTT) PASSIVATE OVERALL
THREAD CLASS
(AAJD) 2A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 0.470 INCHES MINIMUM AND 0.490 INCHES MAXIMUM
THREAD QUANTITY PER INCH
(CMLP) 32
THREAD SERIES DESIGNATOR
(THSD) UNC

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