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NSN 5340-01-254-1470, 5340012541470
SEAT,HELICAL COMPRESSION SPRING

Federal Supply Classification
FSC 5340 - Hardware, Commercial
National Item Identification Number
NIIN 012541470
Codification Country
United States
Item Name Code
INC 24328
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
(P) There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product.
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DLMS® Summary

National Stock Number 5340-01-254-1470

National Stock Number (NSN) 5340-01-254-1470, or NIIN 012541470, (seat,helical compression spring) was assigned May 1, 1987 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, one supplier is listed as an Active supplier 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 5 years.

This NSN is unique to one weapons system.

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 Jul 02, 2012, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) 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) 24328. [A CIRCULAR ITEM, USUALLY HAVING A FLAT OR GROOVED FLANGE, BOSS(ES), AND/OR COUNTERBORE, DESIGNED TO ACCOMMODATE THE END OF THE SPRING. IT IS USED TO POSITION THE SPRING BUT DOES NOT ENCASE THE SPRING OR RESTRAIN LATERAL MOTION. IT MAY BE USED IN CONJUNCTION WITH A RETAINER,HELICAL COMPRESSION SPRING. EXCLUDES:WASHER (AS MODIFIED), SEAT,BALL SOCKET, AND HOLDER,SPRING. SEE ALSO ROTOR,ENGINE POPPET VALVE.]. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no information in the HMIRS; however, the NSN is in an FSC in Table II of Federal Standard 313 and an MSDS may be required by the user. The requirement for an MSDS is dependent on a hazard determination of the supplier or the intended end use of the product. NSN 5340012541470 does not contain precious metals.

This information was last updated on .


Technical Characteristics

DISTANCE FROM END TO FIRST STEP
(BZDH) 0.1900 INCHES NOMINAL
END DIAMETER
(BBRB) 1.6850 INCHES MINIMUM AND 1.6950 INCHES MAXIMUM
BORE DIAMETER
(ABXV) 1.5000 INCHES NOMINAL
COUNTERBORE DIAMETER
(AAWY) 1.7500 INCHES NOMINAL
COUNTERBORE LENGTH
(BZDL) 0.4000 INCHES NOMINAL
DESIGN TYPE
(APGF) SOLID
FIRST STEP DIAMETER
(ABPR) 2.6050 INCHES MINIMUM AND 2.6150 INCHES MAXIMUM
FIRST STEP LENGTH
(ABPS) 0.1200 INCHES NOMINAL
OVERALL HEIGHT
(ABKW) 0.9000 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-200/11, T73511 OR T7351 OR T73 FED SPEC SINGLE MATERIAL RESPONSE
MATERIAL
(MATT) ALUMINUM ALLOY 7075
SECOND END DIAMETER
(AMFZ) 1.9650 INCHES MINIMUM AND 1.9750 INCHES MAXIMUM
SPECIAL FEATURES
(FEAT) FIRST STEP DIAMETER UNDERCUT AND RELIEVED SHOULDER;BOTH ENDS COUNTERSINK 30.0 DEG
STYLE DESIGNATOR
(STYL) SEAT
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION
(STDC) PS15548,MCDONNEL AIRCRAFT CO MFR REF SINGLE TREATMENT RESPONSE
SURFACE TREATMENT
(SFTT) ANODIZE
END DIAMETER
(BBRB) 1.6850 NOMINAL MILS AND 1.6950 NOMINAL CENTIMETERS
MATERIAL DOCUMENT AND CLASSIFICATION
(MDCL) QQ-A-225/9, ALLOY 7075, T7351 FED SPEC 1ST MATERIAL RESPONSE
SURFACE TREATMENT
(SURF) ANODIZE,PS15548,MCDONNEL AIRCRAFT CO
MATERIAL
(MATL) ALUMINUM ALLOY, QQ-A-225/9, ALLOY 7075, T7351 OR ALUMINUM ALLOY,QQ-A-200/11,T73511 OR T7351 OR T73 OR T7351
UNABLE TO DECODE
(MATL) UNABLE TO DECODE OR UNABLE TO DECODE
UNABLE TO DECODE
(SURF) UNABLE TO DECODE
FIRST STEP LENGTH
(ABPS) 0.1200 NOMINAL INCHES

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