NSN 5360-00-312-5144, 5360003125144
SPRING,HELICAL,TORSION

Federal Supply Classification: FSC 5360 - Coil, Flat, Leaf, and Wire Springs
National Item Identification Number: NIIN 003125144
Codification Country: United States
Item Name Code: INC 04228
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.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 5360-00-312-5144

National Stock Number (NSN) 5360-00-312-5144, or NIIN 003125144, (spring,helical,torsion) 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 2 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by one supplier. Today, there are no suppliers listed as an Active supplier for this NSN. Of the active suppliers, there are no suppliers that are 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.

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Sep 21, 2011, this NSN's acquisition method was noted as: Acquire only from the prime contractor although the engineering data identifies the Commercial and Government Entity Code (CAGE) and part number of a source other than the prime contractor. The data or the rights to use the data needed to purchase this part from additional sources are not owned by the Government and it has been determined that it is uneconomical to purchase them. Valid AMCs: 1, 2, 3, 4 and 5.

This NSN is assigned to Item Name Code (INC) 04228. [AN OPEN- OR CLOSE-WOUND COIL SPRING, CONSISTING OF ONE OR MORE HELICAL COILS WOUND FROM DIFFERENT SHAPES AND TYPES OF MATERIAL AND FINISHED AT THE ENDS, DESIGNED TO EXERT PRESSURE IN A ROTATING DIRECTION AROUND THE COIL AXIS. EXCLUDES:SPRINGS DESIGNED FOR THERMAL ACTUATION (SPRINGS IN WHICH THE TORSION FORCES ARE COUNTERACTED BY CHANGES IN TEMPERATURE) AND SPRING,REINFORCING,HOSE.]. 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 5360003125144 contains an unknown precious metal.

This information was last updated on Aug 01, 2025.

Technical Characteristics

END STYLE: (ABQK) REDUCED LOOP END FIRST END
END LENGTH FROM SECOND BEND TO THIRD BEND OR END: (CXTP) 0.313 INCHES NOMINAL SECOND END
MATERIAL: (MATT) COPPER ALLOY OVERALL
END LENGTH FROM SECOND BEND TO THIRD BEND OR END: (CXTP) 0.219 INCHES NOMINAL FIRST END
END ANGULAR RELATIONSHIP: (AXMH) ENDS ANGLED ONE TO OTHER
COIL HELIX DIRECTION: (AXLH) RIGHT-HAND
COIL QUANTITY: (APCN) 7
END LENGTH FROM SECOND BEND TO THIRD BEND OR END: (CXTP) UNABLE TO DECODE
END STYLE: (ABQK) UNABLE TO DECODE
HOOK RADIUS: (AXMC) UNABLE TO DECODE
INSIDE DIAMETER: (AARX) 0.511 INCHES NOMINAL
MATERIAL: (MATT) UNABLE TO DECODE
SPRING FREE LENGTH: (AGEK) 0.469 INCHES NOMINAL
SPRING FREE OUTSIDE DIAMETER: (AXLQ) 0.625 INCHES NOMINAL
STYLE DESIGNATOR: (STYL) SINGLE TORSION LEFT HAND
HOOK RADIUS: (AXMC) 0.937 INCHES NOMINAL FIRST END
HOOK RADIUS: (AXMC) 0.125 INCHES NOMINAL BOTH ENDS
END STYLE: (ABQK) MACHINE LOOP END SECOND END