U S Army Tank Automotive Command Compression Helical Spring NSN:5360-01-218-5918 P/N:123221954

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Compression Helical Spring

NSN: 5360-01-218-5918 | Model: 12321959
ITAR Registered seal

An open coiled spring, wound in various forms and from different shapes and types of materials and finished at the ends, designed to provide resistance to compression forces. Excludes springs designed for thermal actuation (springs in which the torsion forces are designed to be counteracted by changes in temperature) and spring, reinforcing, hose.

NSN Properties and Flags
NATO Stock Number
Yes - ITAR Controlled
End Style
E4 spring end, squared and ground
Bore Diameter
0.750 inches
Stock Diameter
Between 0.118 inches and 0.122 inches
Spring Free Length
2.400 inches
Material Hardness Rating
Between 54.0 Rockwell superficial 45-N and 60.0 Rockwell superficial 45-N
Coil Quantity
Spring Solid Length
1.540 inches
Spring Solid Outside Diameter
0.590 inches
Coil Helix Direction
Spring Deflection Rate
145.100 pounds per inch
Special Features
5USED on armed battle tank; modelno. M1E1, nsn 2350-01-087-1095; and improved tank; model no. M11A, nsn 2350-01136-8738; stock shape: round; active coil quantity: 10; shot blasted feature included; rod diameter over which spring works: 0.710 in.
Material Specification
Astm A401 assn standard single material response
Style Designator

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