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NSN 5305-01-197-6599, 5305011976599
SCREW,CAP,HEXAGON HEAD

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 011976599
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 5305-01-197-6599

National Stock Number (NSN) 5305-01-197-6599, or NIIN 011976599, (screw,cap,hexagon head) was assigned December 24, 1984 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. 2 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are deemed design controlled or valid supply parts.

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

This NSN is unique to one weapons system.

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 5305011976599 does not contain precious metals.

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

EXTENDED WASHER DIAMETER
(AATC) 0.365 INCHES MINIMUM AND 0.385 INCHES MAXIMUM
EXTENDED WASHER THICKNESS
(AATD) 0.040 INCHES MINIMUM AND 0.050 INCHES MAXIMUM
FASTENER LENGTH
(AASB) 1.052 INCHES MINIMUM AND 1.072 INCHES MAXIMUM
FEATURES PROVIDED
(CBBL) FINISHED HEAD
HARDNESS RATING
(CQFM) 42.0 ROCKWELL C MINIMUM OVERALL AND 46.0 ROCKWELL C MAXIMUM OVERALL
HEAD HEIGHT
(AASU) 0.255 INCHES MINIMUM AND 0.265 INCHES MAXIMUM
HEAD STYLE
(AASK) DOUBLE HEXAGON W/HOLE
HOLE CONFIGURATION STYLE
(CRHC) DOUBLE HEXAGON LONGITUDINAL HOLE
HOLE DIAMETER
(AAUB) 0.047 INCHES NOMINAL
HOLE QUANTITY
(ASXK) 4
HOLE TYPE
(BQDM) DRILLED
NOMINAL THREAD DIAMETER
(AHYM) 0.190 INCHES
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS6304 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL COMP 601 OVERALL
MINIMUM TENSILE STRENGTH
(CQBC) 195000 POUNDS PER SQUARE INCH
THREAD CLASS
(AAJD) 3A
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD LENGTH
(AASA) 0.620 INCHES MINIMUM AND 0.700 INCHES MAXIMUM
THREAD SERIES DESIGNATOR
(THSD) UNJF
THREAD QUANTITY PER INCH
(CMLP) 32
WIDTH BETWEEN FLATS
(AATB) 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM
SURFACE FINISH
(CSYM) 32.0 MICROINCHES BEARING SURFACE OF HEAD
SURFACE FINISH
(CSYM) 32.0 MICROINCHES GRIP
SURFACE FINISH
(CSYM) 32.0 MICROINCHES THREADS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) AMS2416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) NICKEL OVERALL AND CADMIUM OVERALL

Manufacturer Part Numbers


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