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NSN 5310-00-178-0166, 5310001780166
Cancelled -> Replaced by 5310009142777

Federal Supply Classification
FSC 5310 - Nuts and Washers
National Item Identification Number
NIIN 001780166
Codification Country
United States
Item Name Code
INC 29729
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 5310-00-178-0166

National Stock Number (NSN) 5310-00-178-0166, or NIIN 001780166, (nut,self-locking,extended washer) was assigned February 24, 1973 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN replaces 1 stock number, 5310009142777.

There are 7 manufacturer part numbers associated with this NSN. 5 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 6 suppliers. Today, 5 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 been procured by the US Government within the last year, but shows no recent (last 90 days) procurement activity. There have been 3 contracts issued for this part number, with 10 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 3 different suppliers. The last contract numbers awarded were: SPE4A625PP824, SPE4A625PP824, SPE5EN19F0432, SPM5AZ09D0003, SPM5AZ09D0003. The total value of the awarded contracts has been US$ 48,054.20.

This NSN is somewhat common among different platforms, belonging to 6 different weapons systems.

There has been very little demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 2,997. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Apr 02, 2006, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) Acquisition of this part is restricted to source(s) specified on "Source Control", "Altered Item" or "Selected Item" drawings/documents. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 29729. [A NUT HAVING 12 DRIVE POINTS, 24 SIDES, AND AN INTEGRAL WASHER WHICH EXTENDS BEYOND THE POINTS OR PERIPHERY. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.]. 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 5310001780166 contains silver.

This NSN is associated to Schedule B 7318160000: nuts of iron or steel. The Schedule B End Use is listed as finished metal shapes. NAICS classification category 332722: bolt, nut, screw, rivet, and washer manufacturing.

This information was last updated on .


Technical Characteristics

LOCKING FEATURE
(AAUM) PREVAILING TORQUE ALL METAL DESIGN
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) IRON ALLOY 660 OVERALL
NOMINAL THREAD SIZE
(CQJX) 0.250 INCHES
NONDEFINITIVE SPEC/STD DATA
(ZZZT) D CLASS
NUT STYLE
(ACTA) DOUBLE HEXAGON
OVERALL HEIGHT
(ABKW) 0.282 INCHES MINIMUM AND 0.328 INCHES MAXIMUM
PRECIOUS MATERIAL
(PRMT) SILVER
SPECIFICATION/STANDARD DATA
(ZZZK) 0782--50T421 MANUFACTURERS SPECIFICATION
SURFACE TREATMENT
(SFTT) SILVER OVERALL
TEMP RATING
(AZKQ) 1200.0 FAHRENHEIT NOMINAL
THREAD CLASS
(AAJD) 3B
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD QUANTITY PER INCH
(CMLP) 28
THREAD SERIES
(BZRR) UNJF
WASHER OUTSIDE DIAMETER
(AAVX) 0.399 INCHES MINIMUM AND 0.440 INCHES MAXIMUM
WASHER THICKNESS
(ADEM) 0.045 INCHES NOMINAL
WIDTH ACROSS FLATS
(ASDB) 0.304 INCHES MINIMUM AND 0.313 INCHES MAXIMUM
TEMP RATING
(AZKQ) 1200.0 DEG FAHRENHEIT NOMINAL

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