Extension Springs

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APPROVED VENDOR -

Extension Spring Cot

StyleModelWire Dia.Outside Dia.LoadDeflection @ LoadEnd TypeMaterialFinishPrice
A1NAR40.091"0.688"22.25 lbs.0.78"Machine HooksCarbon SteelZinc Plated€16.59
A1NAN80.105"0.719"31.02 lbs.0.13"Machine HooksCarbon SteelZinc Plated€15.97
A1NAR10.105"3/4"30.39 lbs.0.18"Machine HooksCarbon SteelZinc Plated€13.70
A1NAR30.105"3/4"31.28 lbs.0.3"Machine HooksCarbon SteelZinc Plated€14.58
A1NAR50.105"3/4"29.96 lbs.0.34"Machine HooksCarbon SteelZinc Plated€9.69
A1NAR20.105"3/4"18.11 lbs.0.27"Machine HooksCarbon SteelZinc Plated€9.71
A1NAR60.105"0.688"38.1 lbs.0.42"Machine HooksCarbon SteelZinc Plated€16.97
A1NAN92/25"1/2"21.38 lbs.4/25"Machine HooksCarbon SteelZinc Plated€13.13
A1NAR73/25"0.719"49.02 lbs.8/25"Machine HooksCarbon SteelZinc Plated€17.96
ASSOCIATED SPRING RAYMOND -

Extension Springs

StyleModelWire Dia.Outside Dia.Spring RateLoadDeflection @ LoadEnd TypeMaterialFinishPrice
A0201520000.041"0.296"0.64 lbs.-in.2.64 lbs.1"Double Twist LoopMusic WireOiled€46.94
A0201530000.047"0.344"0.84 lbs.-in.3.67 lbs.2"Double Twist LoopMusic WireOiled€47.96
A0201540000.054"3/8"1.3 lbs.-in.4.95 lbs.1"Double Twist LoopMusic WireOiled€28.69
A0201550000.062"0.421"2.2 lbs.-in.6.9 lbs.1"Double Twist LoopMusic WireOiled€32.43
A0201080000.105"1 1/8"1.22 lbs.-in.8.45 lbs.2"Double Twist LoopMusic WireOiled€52.53
StyleModelMaterialWire Dia.Outside Dia.LoadDeflection @ LoadInitial TensionEnd TypeFinishPricePkg. Qty.
A1NAW1Carbon Steel0.037"9/25"5.9 lbs.1.14"0.5 lbs.Full Twist LoopPlain€7.661
A1NBB7Carbon Steel0.037"6/25"8.7 lbs.1.91"0.8 lbs.Full Twist LoopPlain€7.661
A1NAT4Carbon Steel0.029"6/25"4.5 lbs.1/4"0.4 lbs.Full Twist LoopPlain€7.641
A1NAU2Carbon Steel0.029"6/25"4.5 lbs.0.42"0.4 lbs.Full Twist LoopPlain€7.663
A1NAU9Carbon Steel0.018"0.18"1.55 lbs.1.46"0.14 lbs.Full Twist LoopPlain€7.641
A1NAV7Carbon Steel0.037"0.3"7.2 lbs.0.7"0.65 lbs.Full Twist LoopPlain€7.781
A1NAW5Carbon Steel0.055"9/25"17.6 lbs.1/2"1.6 lbs.Full Twist LoopPlain€7.641
A1NAX3Carbon Steel0.029"6/25"4.5 lbs.1 18/25"0.4 lbs.Full Twist LoopPlain€7.641
A1NAZ9Carbon Steel0.063"1/2"18.8 lbs.1.62"1.7 lbs.Full Twist LoopPlain€9.881
A1NBE5Carbon Steel0.055"1/2"13.1 lbs.4.38"1.2 lbs.Full Twist LoopPlain€9.641
A1NAU4Carbon Steel0.045"9/25"10.2 lbs.3/25"0.9 lbs.Full Twist LoopPlain€7.661
A1NBE4Carbon Steel0.045"1/2"7.5 lbs.7.39"0.7 lbs.Full Twist LoopPlain€9.851
A1NBB6Carbon Steel0.063"1/2"18.8 lbs.2.1"1.7 lbs.Full Twist LoopPlain€10.093
A1NAZ8Carbon Steel0.055"1/2"13.1 lbs.2 8/25"1.2 lbs.Full Twist LoopPlain€8.711
A1NAX9Carbon Steel0.045"1/2"7.5 lbs.2.61"0.7 lbs.Full Twist LoopPlain€8.201
A1NAW8Carbon Steel0.055"0.3"21.31 lbs.2/5"1.92 lbs.Full Twist LoopPlain€7.661
A1NAW4Carbon Steel0.037"0.3"7.2 lbs.1"0.65 lbs.Full Twist LoopPlain€7.641
A1NAV6Carbon Steel0.037"6/25"8.7 lbs.0.49"0.8 lbs.Full Twist LoopPlain€7.641
A1NAU8Carbon Steel0.029"6/25"4.5 lbs.0.59"0.4 lbs.Full Twist LoopPlain€7.641
A1NAZ2Carbon Steel0.055"1/2"13.1 lbs.1 3/5"1.2 lbs.Full Twist LoopPlain€8.891
A1NAV2Carbon Steel0.029"0.18"5.82 lbs.0.43"0.52 lbs.Full Twist LoopPlain€7.821
A1NAT3Carbon Steel0.018"6/25"1.18 lbs.0.66"0.11 lbs.Full Twist LoopPlain€7.791
A1NAT2Carbon Steel0.029"0.18"5.82 lbs.1/5"0.52 lbs.Full Twist LoopPlain€7.823
A1NAV3Carbon Steel0.029"6/25"4.5 lbs.0.74"0.4 lbs.Full Twist LoopPlain€7.641
A1NAU5Carbon Steel0.018"0.18"1.55 lbs.1 1/5"0.14 lbs.Full Twist LoopPlain€7.641
COTTERMAN -

Spring Kits

StyleModelMPNPrice
ASU0048SU0048-
RFQ
BSU0053SU0053€187.05
CSU7008SU7008-
RFQ
GRAINGER -

Extension Springs

StyleModelMaterialWire Dia.Outside Dia.End TypeFinishSpring RateLoadDeflection @ LoadPrice
AE20CHigh Carbon Steel0.029"0.312"Crossover Center LoopsZinc Plated0.63 lbs.-in.2.61 lbs.3.42"€18.08
B37059GSStainless Steel0.055"3/8"Machine HooksPlain5.13 lbs.-in.14.73 lbs.2.53"€12.11
C5RLT8Zinc Plated2/25"1"-----€7.75
C5RLT9Zinc Plated2/25"1"-----€8.14
WRIGHT PRODUCTS -

Extension Springs

StyleModelMPNPrice
A#8#8€14.15
BV16V16€6.28
ASSOCIATED SPRING RAYMOND -

Extension Spring Standard Steel

Associated Spring Raymond utility extension springs are designed to absorb & store energy, as well as resist component pulling action. These springs feature steel construction with machined half loops / full twist loops on both ends to prevent the individual components from moving apart. Choose from a wide range of these extension springs available in packs of 3, 6 and 12 on Raptor Supplies.

StyleModelWire Dia.Outside Dia.LoadEnd TypeDeflection @ LoadFabric Sleeve Outside Dia.MaterialFinishPricePkg. Qty.
A0200420000.01"0.19"0.14 lbs.-1/2"0.26"SteelOiled€15.971
A0200400000.02"0.23"0.53 lbs.Full Twist Loop0.54"0.31"SteelOiled€22.081
A0200170000.03"1/4"1.68 lbs.Full Twist Loop2.27"0.33"SteelOiled€33.031
A0200200000.03"1/4"1.15 lbs.Full Twist Loop1"0.33"SteelOiled€21.951
A0200090000.05"11/25"4.2 lbs.Full Twist Loop1.9"0.53"SteelOiled€23.421
A0200370000.05"0.34"8.54 lbs.Machine Half Loop0.38"0.43"SteelOiled€15.971
A0200040000.06"1/2"6.5 lbs.Full Twist Loop1"3/5"SteelOiled€22.763
A0200230000.06"0.73"2.75 lbs.Full Twist Loop18/25"0.86"SteelOiled€13.483
A0200220000.06"12/25"14 lbs.Machine Half Loop2.01"0.58"SteelOiled€26.931
A0200020000.07"0.81"5.6 lbs.Machine Half Loop1.99"0.94"SteelOiled€34.741
A0200030000.07"0.63"8.8 lbs.Full Twist Loop3"0.74"SteelOiled€34.351
A0200320000.11"3/4"29.5 lbs.Machine Half Loop0.38"22/25"SteelOiled€47.841
A0200240000.11"18/25"44.3 lbs.Machine Half Loop1.21"21/25"SteelOiled€18.761
A0200990000.11"0.69"31 lbs.Machine Half Loop1/2"0.81"SteelOiled€20.391
A0200310000.11"1"16.75 lbs.Machine Half Loop2"1.15"SteelOiled€41.791
A0201000000.15"1.13"35.5 lbs.Machine Half Loop1"1.29"SteelOiled€91.251
A0201020000.18"1.38"27 lbs.Machine Half Loop1"1 14/25"SteelOiled€130.301
A0201030000.21"1 14/25"78.72 lbs.Machine Half Loop2.1"1.77"SteelOiled€50.326
A0200100001/25"0.33"1.31 lbs.Full Twist Loop1"0.41"SteelOiled€18.411
A0200260001/25"0.31"3.91 lbs.Full Twist Loop1.58"0.39"SteelOiled€15.401
A0200190001/25"0.38"3.25 lbs.Full Twist Loop1"0.46"SteelOiled€28.251
A0200120002/25"0.55"24 lbs.Full Twist Loop2"0.65"SteelOiled€17.341
A0200340002/25"1/2"26.1 lbs.Machine Half Loop1/4"3/5"SteelOiled€23.061
A0200330002/25"3/4"14.3 lbs.Machine Half Loop1"22/25"SteelOiled€18.191
A0200130002/25"14/25"16.82 lbs.Machine Half Loop1"0.67"SteelOiled€21.451
PRIME LINE -

Extension Springs

StyleModelWire Dia.Outside Dia.LoadCoils Per InchEnd TypeMaterialFinishPrice
AGD 12205--------
RFQ
BGD 121910.141"1.297"100 lbs.7Double Center LoopHigh Carbon SteelGalvanized€42.73
CGD 121920.141"1.297"120 lbs.7Double Center LoopHigh Carbon SteelGalvanized€56.78
DGD 121940.156"1.297"140 lbs.6Double Center LoopHigh Carbon SteelGalvanized€52.63
EGD 121930.156"1.297"130 lbs.7Double Center LoopHigh Carbon SteelGalvanized€50.30
FGD 121950.172"1.297"150 lbs.6Double Center LoopHigh Carbon SteelGalvanized€90.24
GGD 122670.188"1.297"170 lbs.5Double Center LoopHigh Carbon SteelGalvanized€73.67
HGD 122070.188"2"150 lbs.5Double Center LoopHigh Carbon SteelGalvanized€70.50
IGD 122771/4"2.062"110 lbs.5Double Center LoopHigh Carbon SteelGalvanized€43.62
JGD 123111/8"1.297"90 lbs.8Double Center LoopHigh Carbon SteelGalvanized€43.00
KGD 122021/8"1.297"70 lbs.8Double Center LoopHigh Carbon SteelGalvanized€48.36
LGD 122791/8"1.297"50 lbs.8Double Center LoopHigh Carbon SteelGalvanized€39.86
WHEELER-REX -

Spring Kits

StyleModelMPNPrice
A9708497084€5.92
A9710497104€9.66
A9712497124€16.81
A9718497184€15.94
A9724497244€21.36
A9736497364€27.66
A9748497484€19.87
A9760497604€62.87
VESTIL -

Extension Springs

StyleModelMPN
A15-146-00115-146-001
B37-146-00137-146-001
INGERSOLL-RAND -

Spring Kits

StyleModelMPNPrice
A107XPA-SK107XPA-SK€10.20
A109XPA-SK109XPA-SK€18.04
B1105-SK1105-SK€9.26
SPEC -

Extension Springs

StyleModelMaterialWire Dia.Outside Dia.Spring RateEnd TypeLoadFinishMeets/exceedsPricePkg. Qty.
AE07500633500MMusic Wire0.063"3/4"2 lbs.-in.Full Twist Loop12.8 lbs.OiledASTM-A228 AND AMS-5112€27.251
AE10001487000MMusic Wire0.148"1"31 lbs.-in.Full Twist Loop107.57 lbs.OiledASTM-A228 AND AMS-5112€45.801
AE01800180620MMusic Wire0.018"0.18"2.2 lbs.-in.Full Twist Loop1.55 lbs.OiledASTM-A228 AND AMS-5112€46.271
BT31430Music Wire0.9 mm4.5 mm8.96 N/mmFull Twist Loop11.17 lbs.OiledDIN-17223, JIS-G4314, AMS-5112€17.701
AE05000755000MMusic Wire0.075"1/2"10.7 lbs.-in.Full Twist Loop30.51 lbs.OiledASTM-A228 AND AMS-5112€20.141
BT31390Music Wire0.8 mm9 mm0.3 N/mmFull Twist Loop4.27 lbs.OiledDIN-17223, JIS-G4314, AMS-5112€18.291
AE08500854000MMusic Wire0.085"0.85"5.8 lbs.-in.Full Twist Loop25.9 lbs.OiledASTM-A228 AND AMS-5112€24.851
AE03600371000MMusic Wire0.037"9/25"7.9 lbs.-in.Full Twist Loop5.9 lbs.OiledASTM-A228 AND AMS-5112€39.801
AE10001256500MMusic Wire1/8"1"13.8 lbs.-in.Full Twist Loop67.87 lbs.OiledASTM-A228 AND AMS-5112€38.941
CDE0375010500MMusic Wire0.047"3/8"1.84 lbs.-in.Double Loop---€38.241
BT31350Music Wire0.8 mm5.5 mm1 N/mmFull Twist Loop6.79 lbs.OiledDIN-17223, JIS-G4314, AMS-5112€16.801
DE00630080750MMusic Wire0.008"0.063"0.5 lbs.-in.Full Twist Loop0.45 lbs.OiledASTM-A228 AND AMS-5112€52.901
AE01800341750MMusic Wire0.034"0.18"14.3 lbs.-in.Full Twist Loop8.97 lbs.OiledASTM-A228 AND AMS-5112€44.761
BT31900Music Wire1.2 mm13 mm0.32 N/mmFull Twist Loop9.49 lbs.OiledDIN-17223, JIS-G4314, AMS-5112€19.471
AE02400221250MMusic Wire0.022"6/25"0.9 lbs.-in.Full Twist Loop2.07 lbs.OiledASTM-A228 AND AMS-5112€44.761
BT31380Music Wire0.8 mm9 mm0.47 N/mmFull Twist Loop4.27 lbs.OiledDIN-17223, JIS-G4314, AMS-5112€17.701
AE02400374000MMusic Wire0.037"6/25"3.3 lbs.-in.Full Twist Loop8.7 lbs.OiledASTM-A228 AND AMS-5112€34.081
AE05000754000MMusic Wire0.075"1/2"14.1 lbs.-in.Full Twist Loop30.51 lbs.OiledASTM-A228 AND AMS-5112€19.971
AE03600454000MMusic Wire0.045"9/25"2.5 lbs.-in.Full Twist Loop10.2 lbs.OiledASTM-A228 AND AMS-5112€44.761
BT32080Music Wire1.6 mm11 mm8.04 N/mmFull Twist Loop24.95 lbs.OiledDIN-17223, JIS-G4314, AMS-5112€18.391
AE01800260880MMusic Wire0.026"0.18"8.2 lbs.-in.Full Twist Loop4.2 lbs.OiledASTM-A228 AND AMS-5112€45.001
AE08500852500MMusic Wire0.085"0.85"14 lbs.-in.Full Twist Loop--ASTM A228 AND AMS 5112€62.751
AE11250854000MMusic Wire0.085"1 1/8"3.1 lbs.-in.Full Twist Loop20.97 lbs.OiledASTM-A228 AND AMS-5112€20.211
AE02400412750MMusic Wire0.041"6/25"8.9 lbs.-in.Full Twist Loop11.65 lbs.OiledASTM-A228 AND AMS-5112€45.801
AE01800240750MMusic Wire0.024"0.18"6.9 lbs.-in.Full Twist Loop3.45 lbs.OiledASTM-A228 AND AMS-5112€44.761
ASSOCIATED SPRING RAYMOND -

Extension Spring Utility

StyleModelMaterialFinishWire Dia.Outside Dia.LoadDeflection @ LoadFabric Sleeve Outside Dia.End TypePrice
A020039000BrassPlain1/25"0.3"2.61 lbs.0.15"0.38"Full Twist Loop€26.53
A020113000SteelOiled0.11"0.63"92.42 lbs.1"0.74"Full Twist Loop€42.73
APPROVED VENDOR -

Extension Spring, Steel

StyleModelEnd TypeMaterialFinishWire Dia.Outside Dia.LoadDeflection @ LoadGradePrice
A1NBR6ClosedCarbon SteelZinc Plated0.105"7/8"42.3 lbs.2.35"-€9.69
A1NBU3ClosedStainless SteelPlain0.312"2.1"365.97 lbs.2.19"Grade 302€103.58
A1NBU8ClosedStainless SteelPlain0.312"2.462"316.11 lbs.3.7"Grade 302€108.77
A1NBU4ClosedStainless SteelPlain0.148"1.746"59.6 lbs.4 2/5"Grade 302€63.78
A1NBT9ClosedStainless SteelPlain0.092"1.192"13.67 lbs.3 1/4"Grade 302€29.71
A1NBT5ClosedCarbon SteelZinc Plated0.135"1.87"38.09 lbs.5"-€37.46
A1NBT1ClosedCarbon SteelZinc Plated1/4"1 7/8"222 lbs.1.85"-€43.86
A1NBR5ClosedCarbon SteelZinc Plated0.092"1.192"12.62 lbs.3"-€18.40
A1NBR8ClosedCarbon SteelZinc Plated0.312"2.1"332.72 lbs.1.85"-€57.98
A1NBR3ClosedCarbon SteelZinc Plated1/8"1.1"55.1 lbs.1.9"-€22.93
A1NBU9ClosedStainless SteelPlain0.135"1.87"38.09 lbs.5"Grade 302€79.72
A1NBU5ClosedStainless SteelPlain1/4"1 7/8"240 lbs.2"Grade 302€85.47
A1NBU7ClosedStainless SteelPlain1/4"1 5/8"262.5 lbs.1 3/4"Grade 302€86.06
A1NBT8ClosedStainless SteelPlain0.072"1.162"11.38 lbs.4.1"Grade 302€26.21
A1NBT2ClosedCarbon SteelZinc Plated0.207"1 3/8"174 lbs.1 1/5"-€34.16
A1NBT4ClosedCarbon SteelZinc Plated0.312"2.462"313.81 lbs.3 2/5"-€76.08
A1NBR9ClosedCarbon SteelZinc Plated0.148"1.746"54.08 lbs.4"-€36.46
A1NBR4ClosedCarbon SteelZinc Plated0.072"1.162"11.1 lbs.4"-€15.12
A1NBU6ClosedStainless SteelPlain0.207"1 3/8"195.75 lbs.1.35"Grade 302€58.54
A1NBU2ClosedStainless SteelPlain1/4"2.1"213.3 lbs.3 1/4"Grade 302€88.67
A1NBT7ClosedStainless SteelPlain1/8"1.1"68.15 lbs.2.35"Grade 302€29.96
A1NBT3ClosedCarbon SteelZinc Plated1/4"1 5/8"247.5 lbs.1.65"-€21.03
A1NBR7ClosedCarbon SteelZinc Plated1/4"2.1"180.65 lbs.2 3/4"-€50.87
A1NBR2ClosedCarbon SteelZinc Plated0.048"0.675"5.01 lbs.2 1/5"-€11.36
A1NBU1ClosedStainless SteelPlain0.105"7/8"49.5 lbs.2 3/4"Grade 302€38.48
APPROVED VENDOR -

Extension Spring Utility

StyleModelMaterialFinishWire Dia.Outside Dia.LoadDeflection @ LoadEnd TypeGradePricePkg. Qty.
A1NAH8Carbon SteelZinc Plated0.041"0.328"7 lbs.7"Crossover Center Loops-€22.081
A1MZY1Carbon SteelZinc Plated0.029"1/4"3.31 lbs.0.81"Crossover Center Loops-€14.201
A1NAA1Carbon SteelZinc Plated0.029"0.312"2.61 lbs.2.49"Crossover Center Loops-€16.311
A1MZZ8Carbon SteelZinc Plated0.023"0.188"2.34 lbs.1.35"Crossover Center Loops-€12.771
A1MZZ6Carbon SteelZinc Plated0.035"3/8"3.8 lbs.1.69"Crossover Center Loops-€16.031
A1MZZ4Carbon SteelZinc Plated0.029"0.312"2.61 lbs.1.94"Crossover Center Loops-€16.031
A1MZZ2Carbon SteelZinc Plated0.023"0.188"2.33 lbs.1 4/25"Crossover Center Loops-€12.351
A1MZY9Carbon SteelZinc Plated0.035"3/8"3.76 lbs.1.35"Crossover Center Loops-€15.351
A1MZY7Carbon SteelZinc Plated0.029"0.312"2.62 lbs.1.62"Crossover Center Loops-€15.351
A1MZY5Carbon SteelZinc Plated0.023"0.188"2.43 lbs.1.01"Crossover Center Loops-€11.291
A1MZY3Carbon SteelZinc Plated0.035"0.312"4.61 lbs.0.69"Crossover Center Loops-€14.311
A1MZX8Carbon SteelZinc Plated0.035"0.312"4.65 lbs.0.43"Crossover Center Loops-€14.081
A1NAA5Carbon SteelZinc Plated0.023"0.188"2.41 lbs.1.71"Crossover Center Loops-€14.201
A1MZX6Carbon SteelZinc Plated0.029"1/4"3.28 lbs.1/2"Crossover Center Loops-€14.201
B1NAJ2Carbon SteelZinc Plated0.063"1/2"18.5 lbs.5 1/2"Crossover Center Loops-€15.226
A1NAH6Carbon SteelZinc Plated0.032"1/4"4.5 lbs.7 1/4"Crossover Center Loops-€22.081
A1NAH3Carbon SteelZinc Plated0.023"0.188"1.8 lbs.8"Crossover Center Loops-€24.621
A1NAF6Carbon SteelZinc Plated0.054"0.438"10.8 lbs.9 3/4"Crossover Center Loops-€18.751
A1NAF3Carbon SteelZinc Plated0.035"0.281"5.7 lbs.10 3/4"Crossover Center Loops-€15.621
A1NAE9Carbon SteelZinc Plated0.026"0.203"2.6 lbs.11 1/4"Crossover Center Loops-€16.171
A1NAE6Carbon SteelZinc Plated0.018"0.141"1.72 lbs.12 1/2"Crossover Center Loops-€16.176
A1NAE3Carbon SteelZinc Plated0.063"1/2"16.61 lbs.2 1/4"Crossover Center Loops-€8.531
A1NAD9Carbon SteelZinc Plated0.048"3/8"13.82 lbs.4"Crossover Center Loops-€14.661
A1NAA3Carbon SteelZinc Plated0.035"3/8"3.81 lbs.2 1/5"Crossover Center Loops-€16.3112
A1NAA7Carbon SteelZinc Plated0.029"0.312"2.62 lbs.2.91"Crossover Center Loops-€17.0912
SIGNODE -

Extension Spring

ModelItemPrice (ex. VAT)Pkg. Qty.
009171CJ2DJC€8.37
1
APPROVED VENDOR -

Extension Spring Gate 1.035 x 16 1/2 L

ModelItemPrice (ex. VAT)Pkg. Qty.
3HPU1AC9NJD€14.80
1
RUBBERMAID -

Extension Spring, Rubbermaid Commercial Products Spring, 3.5 X 2 X 1.25 Inch Size

ModelItemPrice (ex. VAT)Pkg. Qty.
GRFG6127L40000CT9FBF€8.84
1
GRAINGER -

Extension Spring Carbon Steel 6 Inch Length PK3

ModelItemPrice (ex. VAT)Pkg. Qty.
V18CAH8DNR€26.11
1
HONEYWELL -

Range Conversion Spring Kit

ModelItemPrice (ex. VAT)Pkg. Qty.
14004210-001CJ3CRC€143.85
1
VOLLRATH -

Ss Extension Spring

ModelItemPrice (ex. VAT)Pkg. Qty.
23751-1AR7FXA€80.59
1

Extension Springs

We offer an extensive collection of high-quality extension springs from popular brands such as Associated Spring Raymond and Grainger. These heavy-duty springs are designed for applications in doors, exercise equipment, Vise-Grip pliers, trampolines, washing devices and medical equipment. They feature steel or brass construction and have a maximum load capacity of 365.97 lb. These extension springs have spring rate of up to 92.3 lb per inch and are available in different overall lengths, outside diameters, end types and finish options.