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NSN 5305-00-550-1537, 5305005501537
SCREW,TAPPING

Federal Supply Classification
FSC 5305 - Screws
National Item Identification Number
NIIN 005501537
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 5305-00-550-1537

National Stock Number (NSN) 5305-00-550-1537, or NIIN 005501537, (screw,tapping) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). NIIN 005501537 was cancelled on April 2, 2017, with a cancelled status of "Item is Cancelled - USE." This NSN was replaced by NSN 5305014614400. This NSN does not replace any other NSNs.

There are 3 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, only one supplier is 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.

There has been very little 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 Jun 04, 2020, this NSN's acquisition method was noted as: Acquire directly from the actual manufacturer, whether or not the prime contractor is the actual manufacturer. The Government physically does not have in its possession sufficient, accurate, or legible data to purchase this part from other than current source(s). (NOTE: This code is applicable only to parts under immediate buy requirements and only as long as the deficiency is under review for resolution and appropriate recoding.) Valid AMCs: 1, 2, 3, 4 and 5.

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 5305005501537 contains an unknown precious metal.

This information was last updated on .


Technical Characteristics

MATERIAL
(MATT) STEEL OVERALL
INTERNAL DRIVE STYLE
(ABQZ) W/O INTERNAL DRIVE
NONMACHINE THREAD STYLE
(CRGF) DOG TYPE (TYPE B OR C)
NONMACHINE NOMINAL THREAD DIAMETER
(CTYF) 0.250 INCHES
HEAD STYLE
(AASK) HEXAGON
WIDTH BETWEEN FLATS
(AATB) 0.367 INCHES MINIMUM AND 0.375 INCHES MAXIMUM
FEATURES PROVIDED
(CBBL) CASEHARDENED
NONDEFINITIVE SPEC/STD DATA
(ZZZT) B TYPE
SURFACE TREATMENT
(SFTT) CADMIUM OVERALL AND CHROMATE OVERALL
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) QQ-P-416,TYPE 2,CLASS 3 FED SPEC ALL TREATMENT RESPONSES OVERALL
FASTENER LENGTH
(AASB) 1.000 INCHES NOMINAL
HEAD HEIGHT
(AASU) 0.172 INCHES MINIMUM AND 0.190 INCHES MAXIMUM

Manufacturer Part Numbers


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