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NSN 5305-00-167-2921, 5305001672921
SCREW,TAPPING

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 001672921
Codification Country
United States
Item Name Code
INC 41756
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 5305-00-167-2921

National Stock Number (NSN) 5305-00-167-2921, or NIIN 001672921, (screw,tapping) 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 no manufacturer part numbers associated to this NSN.

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) 41756. [A HARDENED EXTERNALLY THREADED FASTENER WHOSE THREAD EXTENDS TO THE BEARING SURFACE OF THE HEAD. THE THREAD MAY BE FLUTED OR OTHERWISE DESIGNED TO CUT OR FORM ITS OWN MATING THREAD. EXCLUDES:SCREW, ASSEMBLED WASHER.]. 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 5305001672921 contains an unknown precious metal.

This NSN is associated to Schedule B 7318140000: self-tapping screws of iron or steel. 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

COUNTERSINK ANGLE
(CRSQ) 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM
FASTENER LENGTH
(AASB) 0.875 INCHES NOMINAL
HEAD DIAMETER
(AASL) 0.320 INCHES MINIMUM AND 0.332 INCHES MAXIMUM
HEAD STYLE
(AASK) FLAT COUNTERSUNK
INTERNAL DRIVE STYLE
(ABQZ) CROSS RECESS TYPE 1
NONMACHINE NOMINAL THREAD DIAMETER
(CTYF) 0.163 INCHES
NONMACHINE THREAD STYLE
(CRGF) DOG TYPE (TYPE B OR C)
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-S-685 COND N FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) STEEL COMP 4130 OVERALL
SURFACE TREATMENT
(SFTT) CADMIUM OVERALL OR ZINC OVERALL

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