NSN 5360-00-971-1549, 5360009711549
SPRING,HELICAL,TORSION

Federal Supply Classification: FSC 5360 - Coil, Flat, Leaf, and Wire Springs
National Item Identification Number: NIIN 009711549
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 5360-00-971-1549

National Stock Number (NSN) 5360-00-971-1549, or NIIN 009711549, (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 no manufacturer part numbers associated to this NSN.

This part number has not been procured by the US Government in over 5 years, with the most recent procurement date of Jun 25, 2018. There have been 2 contracts issued for this part number, with 2 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: SPE5EK18V5036, SPM5L410M0843. The total value of the awarded contracts has been US$ 1,387.40.

This NSN is unique to one weapons system.

There has been a small amount of 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 Sep 02, 2005, 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 5360009711549 contains an unknown precious metal.

This information was last updated on Jul 01, 2025.

Technical Characteristics

MATERIAL: (MATT) STEEL COMP 302 OVERALL OR STEEL COMP 304 OVERALL
END ANGULAR RELATIONSHIP: (AXMH) ENDS PARALLEL ONE TO OTHER AND END W/RH HELIX OF COIL ANGLED TO CENTER SECTION AND END W/LH HELIX OF COIL ANGLED TO CENTER SECTION
CENTER SECTION WIDTH: (AHQA) 1.410 INCHES NOMINAL
COIL AXIS TO CENTER SECTION DISTANCE: (AXLX) 2.500 INCHES NOMINAL
COIL QUANTITY: (APCN) 2-1/6
END LENGTH: (CXTH) 2.460 INCHES NOMINAL BOTH ENDS
END LENGTH FROM FIRST BEND TO SECOND BEND OR END: (CXTN) 0.750 INCHES NOMINAL OVERALL
END LENGTH FROM SECOND BEND TO THIRD BEND OR END: (CXTP) 0.250 INCHES NOMINAL OVERALL
END STYLE: (ABQK) STRAIGHT ANGULAR END OVERALL
INSIDE DIAMETER: (AARX) 0.531 INCHES NOMINAL
MATERIAL DOCUMENT AND CLASSIFICATION: (MDCL) QQ-W-423,FORM 1,COND B FED SPEC ALL MATERIAL RESPONSES OVERALL
MATERIAL: (MATT) STEEL COMP 302 OR STEEL COMP 304 OVERALL
SPRING FREE LENGTH: (AGEK) 1.846 INCHES NOMINAL
SPRING FREE OUTSIDE DIAMETER: (AXLQ) 0.691 INCHES NOMINAL
STYLE DESIGNATOR: (STYL) SINGLE TORSION RIGHT HAND