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Torsion Helical Spring

Model / MPN: 12389359 | NSN: 5360-01-374-9780
ITAR Registered seal

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.

Product Details
NATO Stock Number
5360-01-374-9780
Sold in multiples of
1 EA
DEMIL
NO
Inside Diameter
Between 0.780 inches and 0.820 inches
End Style
Straight end first endstraight end second end
Stock Diameter
0.138 inches
Spring Free Length
0.690 inches
Coil Quantity
3
Coil Helix Direction
Left-hand
Spring Deflection Rate
0.760 pounds per inch
Spring Free Outside Diameter
1.076 inches
End Angular Relationship
Ends parallel one to other
End Length
1.480 inches first end and 1.600 inches first end1.480 inches second end and 1.600 inches second end
End Length From Coil Axis To First Bend
0.400 inches first end0.400 inches second end
End Length From First Bend To Second Bend Or End
1.002 inches first end1.002 inches second end
End Tangent Angle
Between 18.8 degrees and 19.1 degrees
Material
Steel comp 1018
Material Specification
Astm a228-51 assn standard single material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 3 federal specification single treatment response
Style Designator
Single torsion left hand

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12389359 Cross Reference
  • 12389359