NSN 5360-00-321-6184, 5360003216184
SPRING,HELICAL,TORSION

Federal Supply Classification: FSC 5360 - Coil, Flat, Leaf, and Wire Springs
National Item Identification Number: NIIN 003216184
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.

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DLMS^® Summary

National Stock Number 5360-00-321-6184

National Stock Number (NSN) 5360-00-321-6184, or NIIN 003216184, (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 4 manufacturer part numbers associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 4 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 2 suppliers are 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 a year. There have been 10 contracts issued for this part number, with 15 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: SPE7L124P5693, SPE7L123P7338, SPE7L123P5181, SPE5E220V5143, SPE5EN19F3511. The total value of the awarded contracts has been US$ 12,186.59.

This NSN is somewhat common among different platforms, belonging to 10 different weapons systems.

There has been a small amount of demand for this national stock number. Globally, demand for this NSN has originated from 6 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Dec 18, 2013, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

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 5360003216184 contains an unknown precious metal.

This NSN is associated to Schedule B 7320205000: helical springs not suitable for motor-vehicle suspension, of iron or steel. The Schedule B End Use is listed as finished metal shapes.

This information was last updated on Jul 01, 2025.

Technical Characteristics

END ANGULAR RELATIONSHIP: (AXMH) END W/LH HELIX OF COIL ANGLED TO CENTER SECTION OR END W/RH HELIX OF COIL ANGLED TO CENTER SECTION
END ITEM IDENTIFICATION: (AGAV) ARMORED MULTI-PURPOSE VEHICLE (AMPV); A4 BRADLEY FIGHTING VEHICLE; A3 BRADLEY FIGHTING VEHICLE
CENTER LOOP RADIUS: (AXLY) 0.500 INCHES NOMINAL
CENTER SECTION WIDTH: (AHQA) 2.065 INCHES MINIMUM AND 2.252 INCHES MAXIMUM
CENTER STYLE: (CXWF) U TYPE
COIL AXIS TO CENTER SECTION DISTANCE: (AXLX) 2.780 INCHES NOMINAL
COIL HELIX DIRECTION: (AXLH) RIGHT-HAND OR LEFT-HAND
COIL QUANTITY: (APCN) 2-7/8
END LENGTH: (CXTH) 1.500 INCHES NOMINAL BOTH ENDS
END LENGTH FROM FIRST BEND TO SECOND BEND OR END: (CXTN) 0.312 INCHES NOMINAL BOTH ENDS
END STYLE: (ABQK) STRAIGHT BEND END (LEFT) FIRST END
END STYLE: (ABQK) STRAIGHT BEND END (RIGHT) SECOND END
FIRST BEND RADIUS: (AXMD) 0.500 INCHES NOMINAL OVERALL
INSIDE DIAMETER: (AARX) 0.594 INCHES MINIMUM AND 0.656 INCHES MAXIMUM
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: (MATT) STEEL UNS K08500 OVERALL
SPRING FREE LENGTH: (AGEK) 2.422 INCHES MINIMUM AND 2.660 INCHES MAXIMUM
SPRING FREE OUTSIDE DIAMETER: (AXLQ) 0.786 INCHES MINIMUM AND 0.848 INCHES MAXIMUM
STOCK DIAMETER: (ACVU) 0.095 INCHES NOMINAL
STYLE DESIGNATOR: (STYL) DOUBLE TORSION, RIGHT AND LEFT HAND
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: (STDC) QQ-P-416,TY2,CL3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
SURFACE TREATMENT: (SFTT) CADMIUM AND CHROMATE OVERALL
SURFACE TREATMENT: (SFTT) CADMIUM OVERALL AND CHROMATE OVERALL