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    171 Products

    Cut-to-Length Extension Springs

    Image of Product. Front orientation. Extension Springs. Cut-to-Length Extension Springs.
    Image of Attribute. Front orientation. Contains Annotated. Extension Springs. Cut-to-Length Extension Springs.
    Keep these springs on hand so you can cut the right length whenever you need it. Bend their straight-cut ends into custom loops or hooks.
    Spring Steel—Strong and resilient, but best suited for dry environments since moisture will cause these springs to rust.
    Corrosion-Resistant 302 Stainless Steel—Won’t corrode from exposure to moisture and mild chemicals, including ammonia often found in cleaning solutions. These springs are easier to extend than steel, but can’t handle as high a load.
    Minimum Load—The amount of force required to start extending the spring.
    Spring Rate—To determine the spring rate of a cut spring, first multiply the spring rate given by the spring's original length, then divide the result by the cut length (in inches).
    Lg.
    OD
    Wire
    Dia.
    Min. Load,
    lb.
    Spring Rate,
    lbf/in
    Each
    Straight-Cut End
     
    Spring Steel
    36"0.125"0.012"0.080.0079664K4100000
    36"0.125"0.014"0.150.029664K420000
    36"0.125"0.016"0.260.039664K110000
    36"0.125"0.018"0.410.069664K430000
    36"0.125"0.023"0.980.249664K120000
    36"0.188"0.016"0.110.0099664K740000
    36"0.188"0.018"0.180.029664K450000
    36"0.188"0.023"0.490.069664K130000
    36"0.188"0.028"1.010.179664K140000
    36"0.25"0.018"0.090.0069664K460000
    36"0.25"0.023"0.270.029664K470000
    36"0.25"0.028"0.610.069664K150000
    36"0.25"0.035"1.460.219664K160000
    36"0.313"0.023"0.160.019664K480000
    36"0.313"0.028"0.380.039664K490000
    36"0.313"0.035"0.960.19664K170000
    36"0.313"0.047"2.880.59664K180000
    36"0.375"0.028"0.250.029664K510000
    36"0.375"0.035"0.650.059664K190000
    36"0.375"0.047"2.140.269664K210000
    36"0.375"0.063"5.91.319664K520000
    36"0.438"0.035"0.460.039664K220000
    36"0.438"0.047"1.580.169664K2300000
    36"0.5"0.047"1.190.19664K440000
    36"0.5"0.054"2.110.219664K540000
    36"0.5"0.063"3.650.479664K550000
    36"0.5"0.072"6.490.979664K250000
    36"0.5"0.08"9.281.789664K5600000
    36"0.563"0.063"2.90.319664K260000
    36"0.625"0.047"0.70.059664K5900000
    36"0.625"0.063"2.320.229664K270000
    36"0.625"0.08"6.450.819664K2800000
    36"0.625"0.092"10.581.729664K6100000
    36"0.75"0.047"0.430.039664K6200000
    36"0.75"0.105"13.121.899664K2900000
    36"0.75"0.12"20.8849664K6600000
    36"0.875"0.105"9.820.399664K3100000
    36"0.875"0.135"24.794.429664K6800000
    36"1"0.092"4.150.369664K3200000
    36"1"0.12"12.831.479664K3300000
    36"1.125"0.105"5.850.479664K6900000
    36"1.125"0.135"15.591.839664K3400000
    36"1.25"0.12"7.810.699664K7100000
    36"1.25"0.148"18.262.149664K3500000
    36"1.5"0.162"18.221.869664K3600000
     
    Corrosion-Resistant 302 Stainless Steel
    20"0.125"0.013"0.110.029665K5100000
    20"0.125"0.015"0.20.049665K8100000
    20"0.125"0.017"0.330.079665K1200000
    20"0.125"0.02"0.60.179665K4200000
    20"0.125"0.023"0.980.389665K3700000
    20"0.188"0.015"0.080.019665K5300000
    20"0.188"0.017"0.140.029665K8300000
    20"0.188"0.02"0.280.049665K5400000
    20"0.188"0.026"0.790.189665K1500000
    20"0.188"0.028"1.010.279665K3800000
    20"0.25"0.015"0.040.0049665K8400000
    20"0.25"0.017"0.070.0079665K1600000
    20"0.25"0.02"0.150.029665K5700000
    20"0.25"0.023"0.270.039665K8600000
    20"0.25"0.026"0.450.079665K8500000
    20"0.25"0.028"0.610.19665K3900000
    20"0.25"0.032"1.030.29665K1800000
    20"0.25"0.035"1.460.339665K4700000
    20"0.313"0.02"0.080.0089665K1900000
    20"0.313"0.023"0.160.029665K8700000
    20"0.313"0.026"0.280.039665K2100000
    20"0.313"0.028"0.380.059665K4800000
    20"0.313"0.032"0.670.19665K2200000
    20"0.313"0.035"0.960.159665K8800000
    20"0.313"0.041"1.780.369665K2300000
    20"0.313"0.047"2.880.779665K4900000
    20"0.375"0.032"0.440.059665K2400000
    20"0.375"0.035"0.650.089665K5800000
    20"0.375"0.041"1.250.199665K2500000
    20"0.375"0.047"2.140.419665K5900000
    20"0.375"0.054"3.650.879665K2600000
    20"0.375"0.062"5.91.879665K6100000
    20"0.406"0.035"0.520.069665K6200000
    20"0.438"0.035"0.460.059665K8900000
    20"0.438"0.041"0.90.129665K2700000
    20"0.438"0.047"1.580.249665K9100000
    20"0.438"0.054"2.750.519665K2800000
    20"0.5"0.047"1.190.159665K6300000
    20"0.5"0.054"2.110.39665K6900000
    20"0.5"0.062"3.650.689665K6400000
    20"0.5"0.072"6.491.559665K3100000
    20"0.563"0.054"1.650.229665K4600000
    20"0.563"0.062"2.90.469665K9200000
    20"0.563"0.072"5.231.039665K3200000
    20"0.563"0.091"12.763.759665K3300000
    20"0.625"0.062"2.320.329665K6500000
    20"0.625"0.072"4.260.729665K3400000
    20"0.625"0.091"10.582.579665K3500000
    20"0.75"0.047"0.430.049665K6600000
    20"0.75"0.072"2.930.399665K9300000
    20"0.75"0.091"7.541.379665K3600000
    20"0.75"0.105"13.1239665K6700000
    20"0.75"0.12"20.886.299665K6800000
    20"1"0.08"2.380.269665K7100000
    20"1"0.091"4.150.529665K7200000
    20"1"0.105"7.521.129665K7300000
    20"1"0.12"12.832.319665K7400000
    20"1.125"0.105"5.850.769665K7500000
    20"1.125"0.135"15.592.919665K7600000
    20"1.5"0.135"8.921.119665K7700000
    20"1.5"0.162"18.222.939665K7800000
     

    Extension Spring Stud Anchors

    Image of Product. Front orientation. Contains Annotated. Hanger Bolts. Extension Spring Stud Anchors.
    A black-oxide finish provides these steel anchors with mild corrosion resistance. Attach an extension spring to an anchor and then thread the anchor into your part for a secure connection.
    Thread
    Size
    Min.
    Lg.
    Spacing
    Lg.
    Dia.
    Hole
    Dia.
    Each
    Black-Oxide Steel
    6-32
    3/8"Coarse
    5/8"0.138"0.08"9634K2100000
    6-40
    3/8"Fine
    5/8"0.138"0.08"9634K310000
    8-32
    5/8"Coarse
    7/8"0.164"0.1"9634K220000
    8-36
    5/8"Fine
    7/8"0.164"0.1"9634K320000
    10-24
    3/4"Coarse
    1 1/8"0.19"0.12"9634K330000
    10-32
    3/4"Fine
    1 1/8"0.19"0.12"9634K340000
    1/4"-20
    7/8"Coarse
    1 1/4"1/4"0.15"9634K230000
    1/4"-20
    7/8"Coarse
    1 1/4"1/4"0.268"9634K350000
    1/4"-28
    7/8"Fine
    1 1/4"1/4"0.15"9634K240000
    3/8"-16
    1 1/8"Coarse
    1 5/8"3/8"0.22"9634K250000
    3/8"-16
    1 1/8"Coarse
    1 5/8"3/8"0.268"9634K360000
    3/8"-24
    1 1/8"Fine
    1 5/8"3/8"0.22"9634K260000
    M3.5 × 0.6 mm10 mmCoarse
    16 mm3.5 mm2 mm9634K370000
    M4 × 0.7 mm16 mmCoarse
    22 mm4 mm2.5 mm9634K380000
    M5 × 0.8 mm19 mmCoarse
    28 mm5 mm3 mm9634K390000
    M6 × 1 mm22 mmCoarse
    32 mm6 mm4 mm9634K410000
    M8 × 1.25 mm25 mmCoarse
    38 mm8 mm5 mm9634K420000
    M10 × 1.5 mm28 mmCoarse
    41 mm10 mm6 mm9634K430000
     

    Corrosion-Resistant Extension Spring Stud Anchors

    Image of Product. Front orientation. Contains Annotated. Hanger Bolts. Corrosion-Resistant Extension Spring Stud Anchors.
    These stainless steel stud anchors offer excellent corrosion resistance. Attach an extension spring to an anchor and then thread the anchor into your part for a secure connection.
    Thread
    Size
    Min.
    Lg.
    Spacing
    Lg.
    Dia.
    Hole
    Dia.
    Each
    18-8 Stainless Steel
    6-32
    3/8"Coarse
    5/8"0.138"0.08"95907A44000000
    6-40
    5/8"Fine
    5/8"0.138"0.08"95907A1000000
    8-32
    5/8"Coarse
    7/8"0.164"0.1"95907A4600000
    8-36
    5/8"Fine
    7/8"0.164"0.1"95907A1100000
    10-24
    3/4"Coarse
    1 1/8"0.19"0.12"95907A1200000
    10-32
    3/4"Fine
    1 1/8"0.19"0.12"95907A13000000
    1/4"-20
    7/8"Coarse
    1 1/4"1/4"0.15"95907A4800000
    1/4"-20
    7/8"Coarse
    1 1/4"1/4"0.268"95907A14000000
    1/4"-28
    7/8"Fine
    1 1/4"1/4"0.15"95907A4900000
    3/8"-16
    1 1/8"Coarse
    1 5/8"3/8"0.22"95907A51000000
    3/8"-16
    1 1/8"Coarse
    1 5/8"3/8"0.268"95907A15000000
    3/8"-24
    1 1/8"Fine
    1 5/8"3/8"0.22"95907A52000000
    M3.5 × 0.6 mm10 mmCoarse
    16 mm3.5 mm2 mm95907A16000000
    M4 × 0.7 mm16 mmCoarse
    22 mm4 mm2.5 mm95907A17000000
    M5 × 0.8 mm19 mmCoarse
    28 mm5 mm3 mm95907A18000000
    M6 × 1 mm22 mmCoarse
    32 mm6 mm4 mm95907A19000000
    M8 × 1.25 mm25 mmCoarse
    38 mm8 mm5 mm95907A20000000
    M10 × 1.5 mm28 mmCoarse
    41 mm10 mm6 mm95907A21000000
     

    Swiveling Extension Spring Stud Anchors

    Image of Product. Front orientation. Contains Annotated. Hanger Bolts. Swiveling Extension Spring Stud Anchors.
    A black-oxide finish provides these steel anchors with mild corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to an anchor and then thread the anchor into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.
    Thread
    Size
    Min.
    Lg.
    Spacing
    Lg.
    Dia.
    Hole
    Dia.
    Hex
    Size
    Each
    Black-Oxide Steel
    6-32
    3/8"Coarse
    5/8"0.138"0.08"0.035"97745A55000000
    8-32
    5/8"Coarse
    7/8"0.164"0.1"0.05"97745A66000000
    10-24
    3/4"Coarse
    1 1/8"1/4"0.12"0.05"97745A12000000
    10-32
    3/4"Fine
    1 1/8"1/4"0.12"1/16"97745A13000000
    1/4"-20
    7/8"Coarse
    1 1/4"1/4"0.15"5/64"97745A77000000
    1/4"-28
    7/8"Fine
    1 1/4"1/4"0.15"5/64"97745A14000000
    3/8"-16
    1 1/8"Coarse
    1 5/8"3/8"0.22"1/8"97745A88000000
    3/8"-24
    1 1/8"Fine
    1 5/8"3/8"0.22"1/8"97745A15000000
    M3.5 × 0.6 mm10 mmCoarse
    16 mm3.5 mm2 mm0.9 mm97745A16000000
    M4 × 0.7 mm16 mmCoarse
    22 mm4 mm2.5 mm1.3 mm97745A17000000
    M5 × 0.8 mm19 mmCoarse
    28 mm5 mm3 mm1.5 mm97745A18000000
    M6 × 1 mm22 mmCoarse
    32 mm6 mm4 mm2 mm97745A19000000
    M8 × 1.25 mm25 mmCoarse
    38 mm8 mm5 mm2.5 mm97745A20000000
    M10 × 1.5 mm28 mmCoarse
    41 mm10 mm6 mm3 mm97745A21000000
     

    Corrosion-Resistant Swiveling Extension Spring Stud Anchors

    Image of Product. Front orientation. Contains Annotated. Hanger Bolts. Corrosion-Resistant Swiveling Extension Spring Stud Anchors.
    These stainless steel stud anchors offer excellent corrosion resistance. The head swivels 360° so the spring stays straight and properly coiled. Attach an extension spring to an anchor and then thread the anchor into your part for a secure connection. To make tightening easier, anchors have a hex socket on the bottom and wrench flats at the top of the threads.
    Thread
    Size
    Min.
    Lg.
    Spacing
    Lg.
    Dia.
    Hole
    Dia.
    Hex
    Size
    Each
    18-8 Stainless Steel
    6-32
    3/8"Coarse
    5/8"0.138"0.08"0.035"96376A110000000
    6-40
    5/8"Fine
    5/8"1/8"0.08"0.035"96376A50000000
    8-32
    5/8"Coarse
    7/8"0.164"0.1"0.05"96376A22000000
    10-24
    3/4"Coarse
    1 1/8"1/4"0.12"0.05"96376A52000000
    10-32
    3/4"Fine
    1 1/8"1/4"0.12"1/16"96376A53000000
    1/4"-20
    7/8"Coarse
    1 1/4"1/4"0.15"5/64"96376A33000000
    1/4"-28
    7/8"Fine
    1 1/4"1/4"0.15"5/64"96376A54000000
    3/8"-16
    1 1/8"Coarse
    1 5/8"3/8"0.22"1/8"96376A44000000
    3/8"-24
    1 1/8"Fine
    1 5/8"3/8"0.22"1/8"96376A55000000
    M3.5 × 0.6 mm10 mmCoarse
    16 mm3.5 mm2 mm0.9 mm96376A56000000
    M4 × 0.7 mm16 mmCoarse
    22 mm4 mm2.5 mm1.3 mm96376A57000000
    M5 × 0.8 mm19 mmCoarse
    28 mm5 mm3 mm1.5 mm96376A58000000
    M6 × 1 mm22 mmCoarse
    32 mm6 mm4 mm2 mm96376A59000000
    M8 × 1.25 mm25 mmCoarse
    38 mm8 mm5 mm2.5 mm96376A60000000
    M10 × 1.5 mm28 mmCoarse
    41 mm10 mm6 mm3 mm96376A61000000
     
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