Peterson Spring

248.799.5400

Spring manufacturer | Springs, snap-rings, wire forms, clips, clamps, stampings

866.799.9417
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Heavy Duty – ISO Metric Series

Heavy-Duty-metric-spring(Solid Red)
Loads are shown in Newtons.

Efficient Operating Range is 15% to 25% deflection of free length. Maximum deflection is 25%; Long Life deflection is 20%; Optimum Life deflection is 15%. Deflection beyond this Efficient Operating Range could result in premature spring failure. Travel to Solid is a reference dimension only and should never be approached during use.

25% Deflection 20% Deflection 15% Deflection
Part# Free
Length (mm)
Load (lbs) Deflection Length Load (lbs) Deflection Length Load (lbs) Deflection Length Deflection Length
Travel To Solid
Load @
.1″ Deflection (lbs)
Hole Dia. (mm)
Rod Dia. (mm)
HD10-25 25 139.2 6.3 110.5 5.0 84 3.8 7.5 22.1 10 5
HD10-32 32 140 8.0 112 6.4 84 4.8 9.6 17.5 10 5
HD10-38 38 162.5 9.5 130 7.6 97.5 5.7 11.4 17.1 10 5
HD10-44 44 165 11.0 132 8.8 99 6.6 13.2 15 10 5
HD10-51 51 163.8 12.8 130.6 10.2 98.6 7.7 15.3 12.8 10 5
HD10-64 64 171.2 16.0 137 12.8 102.7 9.6 19.2 10.7 10 5
HD10-76 76 142.5 19.0 114 15.2 85.5 11.4 22.8 7.5 10 5
HD10-305 305 160.2 76.3 128.1 61.0 96.2 45.8 91.5 2.1 10 5
HD12-25 25 265.2 6.3 210.5 5.0 160 3.8 7.5 42.1 12.5 6.3
HD12-32 32 265.6 8.0 212.5 6.4 159.4 4.8 9.6 33.2 12.5 6.3
HD12-38 38 278.4 9.5 222.7 7.6 167 5.7 11.4 29.3 12.5 6.3
HD12-44 44 272.8 11.0 218.2 8.8 163.7 6.6 13.2 24.8 12.5 6.3
HD12-51 51 253.4 12.8 202 10.2 152.5 7.7 15.3 19.8 12.5 6.3
HD12-64 64 240 16.0 192 12.8 144 9.6 19.2 15 12.5 6.3
HD12-76 76 250.8 19.0 200.6 15.2 150.5 11.4 22.8 13.2 12.5 6.3
HD12-89 89 254.2 22.3 202.9 17.8 152.8 13.4 26.7 11.4 12.5 6.3
HD12-305 305 213.6 76.3 170.8 61.0 128.2 45.8 91.5 2.8 12.5 6.3
HD16-25 25 472.5 6.3 375 5.0 285 3.8 7.5 75 16 8
HD16-32 32 422.4 8.0 337.9 6.4 253.4 4.8 9.6 52.8 16 8
HD16-38 38 460.8 9.5 368.6 7.6 276.5 5.7 11.4 48.5 16 8
HD16-44 44 470.8 11.0 376.6 8.8 282.5 6.6 13.2 42.8 16 8
HD16-51 51 474.9 12.8 378.4 10.2 285.7 7.7 15.3 37.1 16 8
HD16-64 64 484.8 16.0 387.8 12.8 290.9 9.6 19.2 30.3 16 8
HD16-76 76 488.3 19.0 390.6 15.2 293 11.4 22.8 25.7 16 8
HD16-89 89 483.9 22.3 386.3 17.8 290.8 13.4 26.7 21.7 16 8
HD16-102 102 492.2 25.5 393.7 20.4 295.3 15.3 30.6 19.3 16 8
HD16-305 305 541.7 76.3 433.1 61.0 325.2 45.8 91.5 7.1 16 8
HD20-25 25 1360.8 6.3 1080 5.0 820.8 3.8 7.5 216 20 10
HD20-32 32 1504 8.0 1203.2 6.4 902.4 4.8 9.6 188 20 10
HD20-38 38 1225.5 9.5 980.4 7.6 735.3 5.7 11.0 129 20 10
HD20-44 44 1232 11.0 985.6 8.8 739.2 6.6 13.0 112 20 10
HD20-51 51 1203.2 12.8 958.8 10.2 723.8 7.7 15.0 94 20 10
HD20-64 64 1153.6 16.0 922.9 12.8 692.2 9.6 19.0 72.1 20 10
HD20-76 76 1134.3 19.0 907.4 15.2 680.6 11.4 23.0 59.7 20 10
HD20-89 89 1126.2 22.3 898.9 17.8 676.7 13.4 27.0 50.5 20 10
HD20-102 102 1127.1 25.5 901.7 20.4 676.3 15.3 31.0 44.2 20 10
HD20-115 115 1105.9 28.8 883.2 23.0 664.3 17.3 35.0 38.4 20 10
HD20-127 127 1084.4 31.8 866.1 25.4 651.3 19.1 38.0 34.1 20 10
HD20-139 139 1078.8 34.8 861.8 27.8 647.9 20.9 42.0 31 20 10
HD20-152 152 1071.6 38.0 857.3 30.4 643 22.8 46.0 28.2 20 10
HD20-305 305 1144.5 76.3 915 61.0 687 45.8 91.0 15 20 10
HD25-25 25 2362.5 6.3 1875 5.0 1425 3.8 7.5 375 25 12.5
HD25-32 32 2376 8.0 1900.8 6.4 1425.6 4.8 9.6 297 25 12.5
HD25-38 38 2080.5 9.5 1664.4 7.6 1248.3 5.7 11.0 219 25 12.5
HD25-44 44 2057 11.0 1645.6 8.8 1234.2 6.6 13.0 187 25 12.5
HD25-51 51 1996.8 12.8 1591.2 10.2 1201.2 7.7 15.0 156 25 12.5
HD25-64 64 1968 16.0 1574.4 12.8 1180.8 9.6 19.0 123 25 12.5
HD25-76 76 1881 19.0 1504.8 15.2 1128.6 11.4 23.0 99 25 12.5
HD25-89 89 1873.2 22.3 1495.2 17.8 1125.6 13.4 27.0 84 25 12.5
HD25-102 102 1861.5 25.5 1489.2 20.4 1116.9 15.3 31.0 73 25 12.5
HD25-115 115 1872 28.8 1495 23.0 1124.5 17.3 35.0 65 25 12.5
HD25-127 127 1834.9 31.8 1465.6 25.4 1102.1 19.1 38.0 57.7 25 12.5
HD25-139 139 1834 34.8 1465.1 27.8 1101.4 20.9 42.0 52.7 25 12.5
HD25-152 152 1816.4 38.0 1453.1 30.4 1089.8 22.8 46.0 47.8 25 12.5
HD25-178 178 1824.5 44.5 1459.6 35.6 1094.7 26.7 53.0 41 25 12.5
HD25-203 203 1818.6 50.8 1453.5 40.6 1091.9 30.5 61.0 35.8 25 12.5
HD25-305 305 1747.3 76.3 1396.9 61.0 1048.8 45.8 91.0 22.9 25 12.5
HD32-38 38 3686 9.5 2948.8 7.6 2211.6 5.7 11.0 388 32 16
HD32-44 44 3564 11.0 2851.2 8.8 2138.4 6.6 13.0 324 32 16
HD32-51 51 3481.6 12.8 2774.4 10.2 2094.4 7.7 15.0 272 32 16
HD32-64 64 3392 16.0 2713.6 12.8 2035.2 9.6 19.0 212 32 16
HD32-76 76 3268 19.0 2614.4 15.2 1960.8 11.4 23.0 172 32 16
HD32-89 89 3144.3 22.3 2509.8 17.8 1889.4 13.4 27.0 141 32 16
HD32-102 102 3111 25.5 2488.8 20.4 1866.6 15.3 31.0 122 32 16
HD32-115 115 3081.6 28.8 2461 23.0 1851.1 17.3 35.0 107 32 16
HD32-127 127 2957.4 31.8 2362.2 25.4 1776.3 19.1 38.0 93 32 16
HD32-139 139 2992.8 34.8 2390.8 27.8 1797.4 20.9 42.0 86 32 16
HD32-152 152 3340.2 38.0 2672.2 30.4 2004.1 22.8 46.0 87.9 32 16
HD32-178 178 3310.8 44.5 2648.6 35.6 1986.5 26.7 53.0 74.4 32 16
HD32-203 203 3291.8 50.8 2630.9 40.6 1976.4 30.5 61.0 64.8 32 16
HD32-254 254 3232.2 63.5 2585.7 50.8 1939.3 38.1 76.0 50.9 32 16
HD32-305 305 3258 76.3 2604.7 61.0 1955.7 45.8 91.0 42.7 32 16
HD40-51 51 4480 12.8 3570 10.2 2695 7.7 15.0 350 40 20
HD40-64 64 4304 16.0 3443.2 12.8 2582.4 9.6 19.0 269 40 20
HD40-76 76 4161 19.0 3328.8 15.2 2496.6 11.4 23.0 219 40 20
HD40-89 89 4237 22.3 3382 17.8 2546 13.4 27.0 190 40 20
HD40-102 102 4156.5 25.5 3325.2 20.4 2493.9 15.3 31.0 163 40 20
HD40-115 115 4089.6 28.8 3266 23.0 2456.6 17.3 35.0 142 40 20
HD40-127 127 4070.4 31.8 3251.2 25.4 2444.8 19.1 38.0 128 40 20
HD40-139 139 4002 34.8 3197 27.8 2403.5 20.9 42.0 115 40 20
HD40-152 152 3990 38.0 3192 30.4 2394 22.8 46.0 105 40 20
HD40-178 178 3960.5 44.5 3168.4 35.6 2376.3 26.7 53.0 89 40 20
HD40-203 203 3911.6 50.8 3126.2 40.6 2348.5 30.5 61.0 77 40 20
HD40-254 254 3873.5 63.5 3098.8 50.8 2324.1 38.1 76.0 61 40 20
HD40-305 305 3891.3 76.3 3111 61.0 2335.8 45.8 91.0 51 40 20
HD50-64 64 6608 16.0 5286.4 12.8 3964.8 9.6 19.0 413 50 25
HD50-76 76 6441 19.0 5152.8 15.2 3864.6 11.4 23.0 339 50 25
HD50-89 89 6422.4 22.3 5126.4 17.8 3859.2 13.4 27.0 288 50 25
HD50-102 102 6247.5 25.5 4998 20.4 3748.5 15.3 31.0 245 50 25
HD50-115 115 6192 28.8 4945 23.0 3719.5 17.3 35.0 215 50 25
HD50-127 127 6105.6 31.8 4876.8 25.4 3667.2 19.1 38.0 192 50 25
HD50-139 139 5846.4 34.8 4670.4 27.8 3511.2 20.9 42.0 168 50 25
HD50-152 152 5852 38.0 4681.6 30.4 3511.2 22.8 46.0 154 50 25
HD50-178 178 5963 44.5 4770.4 35.6 3577.8 26.7 53.0 134 50 25
HD50-203 203 5943.6 50.8 4750.2 40.6 3568.5 30.5 61.0 117 50 25
HD50-254 254 5651.5 63.5 4521.2 50.8 3390.9 38.1 76.0 89 50 25
HD50-305 305 5569.9 76.3 4453 61.0 3343.4 45.8 91.0 73 50 25

Die Springs Menu

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  • ISO Inch Series
    • Light Duty – ISO Inch Series
    • Medium Duty ISO Inch Series
    • Heavy Duty – ISO Inch Series
    • Extra Heavy Duty – ISO Inch Series
  • ISO Metric Series
    • Light Duty – ISO Metric Series
    • Medium Duty – ISO Metric Series
    • Heavy Duty – ISO Metric Series
    • Extra Heavy Duty – ISO Metric Series

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The best products, coupled with practical, innovative thinking

Established in 1914, Peterson Spring is the largest privately held spring manufacturer in North America. Through designing, manufacturing and supplying springs, snap-rings, wire forms, clips, clamps, stampings, and a variety of sub-assemblies, Peterson Spring has expanded to 12 worldwide locations.
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Main Office
21200 Telegraph Road
Southfield, MI 48033
United States

Phone (248) 799-5400
Fax (248) 357-3176

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