NSN 5360-00-019-6857, 5360000196857
SPRING,HELICAL,TORSION

Federal Supply Classification: FSC 5360 - Coil, Flat, Leaf, and Wire Springs
National Item Identification Number: NIIN 000196857
Codification Country: United States
Item Name Code: INC 04228
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: We have 2 qualified suppliers

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DLMS^® Summary

National Stock Number 5360-00-019-6857

National Stock Number (NSN) 5360-00-019-6857, or NIIN 000196857, (spring,helical,torsion) was assigned October 17, 1972 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. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 9 suppliers. Today, 8 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 8 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 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: SPE7L124P5978, SPE7L124P5978, SPM5EC14CF030, SPM5EC14CF030, SPM5EC14CF030. The total value of the awarded contracts has been US$ 150,935.22.

This NSN is fairly common among different weapons systems, belonging to 15 different platforms.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. The 24 month forecast from the US Government for this part number has high volatility, with an estimated forecasted value of US$ 10,053. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 27, 2016, 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) 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 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 5360000196857 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 ANGULAR RELATIONSHIP: (AXMH) END W/LH HELIX OF COIL ANGLED TO CENTER SECTION AND END W/RH HELIX OF COIL ANGLED TO CENTER SECTION
CENTER LOOP RADIUS: (AXLY) 0.156 INCHES NOMINAL
CENTER SECTION WIDTH: (AHQA) 0.562 INCHES NOMINAL
COIL QUANTITY: (APCN) 2-1/2
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) 0.750 INCHES MINIMUM AND 0.766 INCHES MAXIMUM
SPRING FREE LENGTH: (AGEK) 0.812 INCHES NOMINAL
SPRING FREE OUTSIDE DIAMETER: (AXLQ) 1.000 INCHES MINIMUM AND 1.016 INCHES MAXIMUM
STYLE DESIGNATOR: (STYL) SINGLE TORSION RIGHT HAND
END STYLE: (ABQK) OFFSET HALF LOOP, LEFT END SECOND END
HOOK RADIUS: (AXMC) 0.250 INCHES NOMINAL BOTH ENDS
HOOK RADIUS: (AXMC) 0.281 INCHES NOMINAL FIRST END
END LENGTH FROM SECOND BEND TO THIRD BEND OR END: (CXTP) 0.375 INCHES NOMINAL SECOND END
END LENGTH FROM SECOND BEND TO THIRD BEND OR END: (CXTP) 0.531 INCHES NOMINAL FIRST END