HELICOIL Locking Helical Inserts

Helicoil locking helical inserts are installed into printing presses, gear housing & exhaust systems to create an internal screw thread for installing fasteners in automotive manufacturing & maintenance applications. They have a screw locking design to avoid screw loosening upon installation.

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StyleModelInsert LengthFinishDrill SizeFree Coil Dia.Thread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA4184-2.5CN0252.5 mmPlain2.55 mm3.45 mmCoarse-Rockwell C43-C50200000 psi to 250000 psi€141.41100
AA4184-2.5CN0383.8 mmPlain2.55 mm3.45 mmCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€163.55100
AA4184-2.5CNW0383.8 mmDry Film Lubricant-3.45 mmCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€166.91100
AA4184-2.5CNW0505 mmDry Film Lubricant#373.45 mmCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€186.09100
AA4184-2.5CN0505 mmPlain2.55 mm3.45 mmCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€195.13100
AA4184-2.5CNW0636.3 mmDry Film Lubricant#373.45 mmCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€202.82100
AA4184-2.5CN0757.5 mmPlain2.55 mm3.45 mmCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€210.28100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-2CN4920.492"0.214"PlainFine#17Right HandRockwell C43-C50200000 psi to 250000 psi€221.16100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
A3591-16CN15001 1/2"1.171"PlainFine1 1/64"Right HandRockwell C43-C50200000 psi to 250000 psi€20.231
StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-20CN12501 1/4"1 17/64"1.454"PlainFineRight HandRockwell C43-C50200000 psi to 250000 psi€2,902.19100
AA3591-20CN18751 7/8"1 17/64"1.454"PlainFineRight HandRockwell C43-C50200000 psi to 250000 psi€3,550.41100
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M3 x 0.5 Grade 304 Stainless Steel Locking Helical Inserts

StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeTensile StrengthThread DirectionHardnessPricePkg. Qty.
A4184-2.5CNW025S2.5 mm3.45 mmDry Film LubricantCoarse2.55 mm200000 psi to 250000 psiRight HandRockwell C43-C50€2,375.341000
A4184-2.5CN025S2.5 mm3.45 mmPlainCoarse2.55 mm200000 psi to 250000 psiRight HandRockwell C43-C50€2,257.671000
A4184-3CN030S3 mm4.075 mmPlainCoarse1/8"200000 psi to 250000 psi-Rockwell C43-C50€1,793.641000
A4184-3CNW030S3 mm4.075 mmDry Film LubricantCoarse1/8"200000 psi to 250000 psiRight HandRockwell C43-C50€1,698.891000
AA4184-3CN0303 mm4.075 mmPlainCoarse3.15 mm200000 psi to 250000 psiRight HandRockwell C43-C50€155.30100
A4184-3.5CNW035S3.5 mm4.675 mmDry Film LubricantMetric Coarse3.7 mm200000 psi to 250000 psiRight HandRockwell C43-C50€1,465.671000
A4184-2.5CN038S3.8 mm3.45 mmPlainCoarse2.55 mm200000 psi to 250000 psiRight HandRockwell C43-C50€1,407.991000
A4184-2.5CNW038S3.8 mm3.45 mmDry Film LubricantCoarse2.55 mm200000 psi to 250000 psiRight HandRockwell C43-C50€1,918.031000
AA4184-3CN0454.5 mm4.075 mmPlainCoarse3.15 mm200000 psi to 250000 psiRight HandRockwell C43-C50€164.47100
A4184-3CN045S4.5 mm4.075 mmPlain-1/8"200000 psi to 250000 psiRight HandRockwell C43-C50€1,779.111000
A4184-3CNW045S4.5 mm4.075 mmDry Film LubricantCoarse1/8"200000 psi to 250000 psiRight HandRockwell C43-C50€1,965.971000
A4184-2.5CN050S5 mm3.45 mmPlainCoarse2.55 mm200000 psi to 250000 psiRight HandRockwell C43-C50€1,479.011000
A4184-2.5CNW050S5 mm3.45 mmDry Film LubricantCoarse2.55 mm200000 psi to 250000 psiRight HandRockwell C43-C50€2,343.641000
A4184-3.5CNW053S5.3 mm4.675 mmDry Film LubricantCoarse3.7 mm200000 psi to 250000 psiRight HandRockwell C43-C50€1,381.081000
A4184-3CN060S6 mm4.075 mmPlainCoarse1/8"200000 psi to 250000 psiRight HandRockwell C43-C50€1,869.361000
A4184-3CNW060S6 mm4.075 mmDry Film LubricantCoarse1/8"200000 psi to 250000 psiRight HandRockwell C43-C50€2,056.971000
AA4184-3CN0606 mm4.075 mmPlainCoarse3.15 mm200000 psi to 250000 psiRight HandRockwell C43-C50€192.22100
B4184-3.5CNW070S7 mm4.953 mmDry Film LubricantCoarse3.7 mm200000.0 psi to 250000.0 psiRight HandRockwell C43-C50€2,021.181000
AA4184-3CN0757.5 mm4.075 mm-Metric Coarse3.15 mm200000 psi to 250000 psiRight HandRockwell C43-C50€203.32100
AA4184-3CN0909 mm4.075 mmPlainCoarse3.15 mm200000 psi to 250000 psiRight HandRockwell C43-C50€220.83100
StyleModelInsert LengthThread TypeDrill SizeFree Coil Dia.FinishThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA4184-10CN25025 mmCoarse10.5 mm12.225 mmPlainRight HandRockwell C43-C50200000 psi to 250000 psi€451.37100
AA4184-10CN30030 mmMetric Coarse10.5 mm12.225 mm-Right HandRockwell C43-C50200000 psi to 250000 psi€526.59100
StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionThread SizeMaterialPricePkg. Qty.
AA4184-12CN30030 mm12.5 mm14.65 mmPlainCoarseRight HandM12 x 1.75Stainless Steel€705.79100
StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA4184-14CN21021 mm14.5 mm17 mmPlainCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€670.64100
AA4184-14CN28028 mm14.5 mm17 mmPlainCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€849.98100
StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA4184-16CN160-16.5 mm19.25 mmPlainCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€748.27100
AA4184-16CN24024 mm16.5 mm19.25 mmPlainCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€993.41100
AA4184-16CN32032 mm16.5 mm19.25 mmPlainCoarseRight Hand--€1,168.43100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3585-5EN4690.469"0.39"PlainCoarseQRight HandRockwell C43-C50200000 psi€329.63100
AA3585-5EN6255/8"0.39"PlainCoarseQRight HandRockwell C43-C50200000 psi€449.62100
AA3585-5EN3125/16"0.39"PlainCoarseQRight HandRockwell C43-C50200000 psi€295.75100
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7/8"-9 Grade 304 Stainless Steel Locking Helical Inserts

Thread inserts are suitable for installing threaded fasteners in soft and thin materials with a stripped & threaded hole. They are ideal for automobile, aerospace and maintenance applications. They provide more strength, versatility & resilient operation than traditional threaded holes.
These locking inserts feature Grade 304 stainless steel construction, offering corrosion, heat and fire resistance with moderate structural rigidity.

StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
A3585-14CN13121.312"1.037"PlainCoarse29/32"Right HandRockwell C43-C50200000 psi to 250000 psi€17.351
A3585-14CN8757/8"1.037"PlainCoarse29/32"Right HandRockwell C43-C50200000 psi to 250000 psi€15.471
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionTensile StrengthPricePkg. Qty.
A3591-14CN8757/8"1.036"PlainFine57/64"Right Hand200000 psi to 250000 psi€14.131
StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-18CN11251 1/8"1 9/64"1.319"PlainFineRight HandRockwell C43-C50200000 psi to 250000 psi€2,687.94100
AA3591-18CN16881.688"1 9/64"1.319"PlainFineRight HandRockwell C43-C50200000 psi to 250000 psi€3,168.87100
StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
A3585-20CN12501 1/4"1 19/64"1.463"PlainCoarseRight HandRockwell C43-C50200000 psi to 250000 psi€33.591
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1 1/2"-12 Grade 304 Stainless Steel Locking Helical Inserts

Thread inserts are suitable for installing threaded fasteners in soft and thin materials with a stripped & threaded hole. They are ideal for automobile, aerospace and maintenance applications. They provide more strength, versatility & resilient operation than traditional threaded holes.
These locking inserts feature Grade 304 stainless steel construction for corrosion, heat and fire-resistant properties with moderate structural rigidity.

StyleModelInsert LengthDrill SizeFree Coil Dia.FinishThread TypeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-24CN22502 1/4"1 33/64"1.727"PlainFineRight HandRockwell C43-C50200000 psi to 250000 psi€4,477.16100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3585-4EN5001/2"8/25"PlainCoarseHRight HandRockwell C43-C50200000 psi€323.77100
AA3585-4EN2501/4"8/25"PlainCoarseHRight HandRockwell C43-C50200000 psi€275.32100
AA3585-4EN7503/4"8/25"PlainCoarseHRight HandRockwell C43-C50200000 psi€353.93100
AA3585-4EN3753/8"8/25"PlainCoarseHRight HandRockwell C43-C50200000 psi€283.66100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-3EN1900.19"0.246"PlainFine#7Right HandRockwell C43-C50200000 psi€270.77100
AA3591-3EN3800.38"0.246"PlainFine#7Right HandRockwell C43-C50200000 psi€286.11100
AA3591-3EN5700.57"0.246"PlainFine#7Right HandRockwell C43-C50200000 psi€371.61100
AA3591-3EN2850.285"0.246"PlainFine#7Right HandRockwell C43-C50200000 psi€284.23100
AA3591-3EN4750.475"0.246"PlainFine#7Right HandRockwell C43-C50200000 psi€327.92100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
A3585-12CN11251 1/8"0.893"PlainCoarse25/32"Right HandRockwell C43-C50200000 psi to 250000 psi€14.921
A3585-12CN7503/4"0.893"PlainCoarse25/32"Right HandRockwell C43-C50200000 psi to 250000 psi€10.991
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-4EN5001/2"0.316"PlainFineGRight HandRockwell C43-C50200000 psi€285.39100
AA3591-4EN2501/4"0.316"PlainFineGRight HandRockwell C43-C50200000 psi€241.96100
AA3591-4EN3753/8"0.316"PlainFineGRight HandRockwell C43-C50200000 psi€277.70100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA3591-5EN4690.469"0.39"PlainFine21/64"Right HandRockwell C43-C50200000 psi€697.65100
AA3591-5EN6255/8"0.39"PlainFine21/64"Right HandRockwell C43-C50200000 psi€831.63100
AA3591-5EN3125/16"0.39"PlainFine21/64"Right HandRockwell C43-C50200000 psi€632.37100
StyleModelInsert LengthFree Coil Dia.FinishThread TypeDrill SizeThread DirectionHardnessTensile StrengthPricePkg. Qty.
AA4184-4EN0404 mm5.325 mmPlainCoarse4.2 mmRight HandRockwell C43-C50200000 psi€537.37100
AA4184-4EN0606 mm5.325 mmPlainCoarse4.2 mmRight HandRockwell C43-C50200000 psi€272.46100
AA4184-4EN0808 mm5.325 mmPlainCoarse4.2 mmRight HandRockwell C43-C50200000 psi€588.09100