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NSN 5310-00-540-2526, 5310005402526
NUT,SELF-LOCKING,EXTENDED WASHER

Federal Supply Classification
FSC 5310 - Nuts and Washers
National Item Identification Number
NIIN 005402526
Codification Country
United States
Item Name Code
INC 29730
Criticality
(F) This item is a Flight Safety Critical Aircraft Part (FSCAP).
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.
Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS® Summary

National Stock Number 5310-00-540-2526

National Stock Number (NSN) 5310-00-540-2526, or NIIN 005402526, (nut,self-locking,extended washer) was assigned September 25, 1974 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 5 manufacturer part numbers associated with this NSN. 4 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 3 suppliers are listed as Active suppliers 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 a year. 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: SPE5EC19P0661, SPE5EC19P0610, SPM5EC12M0177. The total value of the awarded contracts has been US$ 21,995.20.

This NSN is somewhat common among different platforms, belonging to 4 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. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Mar 30, 2012, 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) 29730. [A NUT HAVING 6 FLAT SIDES AND AN INTEGRAL WASHER WHICH EXTENDS BEYOND THE FLATS OR PERIPHERY. AN INTEGRAL FEATURE IS INCORPORATED FOR LOCKING ON THE THREADS OF A MATING MEMBER.]. This item is a Flight Safety Critical Aircraft Part (FSCAP). There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5310005402526 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

NOMINAL THREAD SIZE
(CQJX) 0.500 INCHES
NUT STYLE
(ACTA) CASTELLATED HEXAGON
OVERALL HEIGHT
(ABKW) 0.250 INCHES NOMINAL
LOCKING FEATURE
(AAUM) PREVAILING TORQUE ALL METAL DESIGN
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OVERALL OR AMS 5737 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
MATERIAL
(MATT) IRON ALLOY 660 OVERALL
PRECIOUS MATERIAL AND LOCATION
(PMLC) ON NUT SILVER
PRECIOUS MATERIAL
(PRMT) SILVER
THREAD CLASS
(AAJD) 3B
THREAD DIRECTION
(AAJF) RIGHT-HAND
THREAD SERIES
(BZRR) UNJF
THREAD QUANTITY PER INCH
(CMLP) 20
WASHER OUTSIDE DIAMETER
(AAVX) 0.770 INCHES MAXIMUM
WASHER THICKNESS
(ADEM) 0.030 INCHES NOMINAL
WIDTH ACROSS FLATS
(ASDB) 0.556 INCHES MINIMUM AND 0.566 INCHES MAXIMUM
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) AMS 2410 ASSN STD SINGLE TREATMENT RESPONSE OVERALL OR AMS 2411 ASSN STD SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT
(SFTT) SILVER OVERALL
TEMP RATING
(AZKQ) 800.0 DEG FAHRENHEIT MAXIMUM

Manufacturer Part Numbers


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