Compression Spring
Stock sizes in music wire and stainless steel
Associated Spring offers a broad variety of helical compression springs
in the SPEC selection. They are reliable, inexpensive and efficient -
the right combination for general-purpose use throughout industry.
Material
Music Wire - Per ASTM-A228 or AMS 5112. Music wire springs are not
recommended for applications where the temperature exceeds 121 deg. C
(250 deg F.)
Stainless Steel Type 302 - ASTM-A313 or AMS 5688 spring tempered (chemical & physical
only). Stainless steel springs are not recommended for applications where
the temperature exceeds 260 deg. C (500 deg. F).
Type 302 stainless steel is slightly magnetic. Surface of stainless
steel may have a residue of nickel on the surface. This is normal and
will not affect the function of the part.
Wire diameter is prior to forming.
Music wire will be furnished unless stainless steel is specified. When
inquiring or ordering, use letter "M" or letter "S" as suffix to designate
music wire or stainless steel, respectively.
No charge for certificate of compliance when requested; certificate
of chemical analysis available, see price book.
Direction of Helix
Right hand.
Ends
Squared and ground. Ends to be square within 3 0 with axis O.D. size
0.057-0.088 in (1.45-2.24 mm) squared end not ground
Free length L is for reference use only. Load P is attained at length L 1 .
For stainless steel multiply P by 0.833.
Load values shown are for music wire.
For normal service, springs should not be compressed below L 1 . (May
take a set beyond L 1 )
To determine load P at any length other than L 1 , multiply the proposed
deflection by the rate R. *[P = (L-Lx) x R]. When stainless steel is
used the value for rate R must be corrected by multiplying R by 0.833. 
Standard finish is that of the normal wire. Shot-peened and
plated finishes furnished on request. Allow sufficient additional
time for special finishes.
Tolerances
O.D. (English) |
O.D. (Metric) |
0.057 to 0.119 in ± 0.003 in |
1.45 to 3.02 mm ± 0.08 mm |
0.120 to 0.240 in ± 0.005 in |
3.05 to 6.10 mm ± 0.13 mm |
0.241 to 0.500 in ± 0.008 in |
6.12 to 12.70 mm ± 0.20 mm |
0.501 to 1.000 in ± 0.015 in |
12.73 to 25.40 mm ± 0.38 mm |
1.001 to 1.225 in ± 0.020 in |
25.43 to 31.12 mm ± 0.51 mm |
1.226 to 1.460 in ± 0.030 in |
31.14 to 37.08 mm ± 0.76 mm |
1.461 to 2.000 in ± 0.040 in |
37.11 to 50.80 mm ± 1.02 mm |
Load, P at L 1 ± 10%
Spring Rate, R ± 10%
*Lx = Desired Load Length |
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