Free Running Helical Inserts

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Free running inserts are designed to make threads or repair worn threads inside tapped holes. They are ideal for providing reliable threading in metals, composites, wood & similar...Read more

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
AA1084-6EN0606 mm7.675 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£169.31100
AA1084-6EN0909 mm7.675 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£180.21100
AA1084-6EN12012 mm7.675 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£191.94100
AA1084-6EN18018 mm7.675 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£219.69100
CHRISLYNN -

1 1/8"-12 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A840391 1/8"-Tanged-Right Hand---5
RFQ
BK1191-181.688"1.319"TangedFineRight Hand200000 psi to 250000 psiRockwell C43-C50£45.291
A841391.688"-Tanged-Right Hand---5
RFQ
A842392 1/4"-Tanged-Right Hand---5
RFQ
A843392.812"-Tanged-Right Hand---5
RFQ
A844393 3/8"-Tanged-Right Hand---5
RFQ
StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
AA1084-3EN0303 mm4.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£196.84100
AA1084-3EN0454.5 mm4.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£259.03100
AA1084-3EN0757.5 mm4.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£271.47100
AA1084-3EN0909 mm4.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£294.83100
CHRISLYNN -

3/8"-24 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A844211 1/8"-Tanged-Right Hand---100
RFQ
A842213/4"-Tanged-Right Hand---100
RFQ
A840213/8"-Tanged-Right Hand---100
RFQ
A841219/16"-Tanged-Right Hand---100
RFQ
BR1191-69/16"0.458"TangedFineRight Hand200000 psi to 250000 psiRockwell C43-C50£46.8512
A8432115/16"-Tanged-Right Hand---100
RFQ
StyleModelInsert LengthTang TypeThread DirectionThread SizeMaterial
A83320-1.03 1/2"TangedRight Hand3 1/2"-8Stainless Steel
RFQ
A83320-1.254 3/8"TangedRight Hand3 1/2"-8Stainless Steel
RFQ
StyleModelInsert LengthTang TypeThread DirectionThread SizeMaterialPkg. Qty.
A842321 1/2"TangedRight Hand3/4"-16Stainless Steel15
RFQ
A841321 1/8"TangedRight Hand3/4"-16Stainless Steel15
RFQ
A843321 7/8"TangedRight Hand3/4"-16Stainless Steel15
RFQ
A844322 1/4"TangedRight Hand3/4"-16Stainless Steel15
RFQ
A840323/4"TangedRight Hand3/4"-16Stainless Steel15
RFQ
CHRISLYNN -

3/4"-10 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A842311 1/2"-Tanged-Right Hand---15
RFQ
A841311 1/8"-Tanged-Right Hand---15
RFQ
BR1185-121 1/8"0.893"TangedCoarseRight Hand200000 psi to 250000 psiRockwell C43-C50£66.504
A843311 7/8"-Tanged-Right Hand---15
RFQ
A844312 1/4"-Tanged-Right Hand---15
RFQ
A840313/4"-Tanged-Right Hand---15
RFQ
CHRISLYNN -

5/8"-18 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A842301 1/4"-Tanged-Right Hand---50
RFQ
A844301 7/8"-Tanged-Right Hand---50
RFQ
A843301.562"-Tanged-Right Hand---50
RFQ
A840305/8"-Tanged-Right Hand---50
RFQ
BR1191-1015/16"0.746"TangedFineRight Hand200000 psi to 250000 psiRockwell C43-C50£73.806
A8413015/16"-Tanged-Right Hand---50
RFQ
StyleModelInsert LengthTang TypeThread DirectionThread SizeMaterialPkg. Qty.
A843110.41"TangedRight Hand#8-36Stainless Steel100
RFQ
A840110.164"TangedRight Hand#8-36Stainless Steel100
RFQ
A841110.246"TangedRight Hand#8-36Stainless Steel100
RFQ
A842110.328"TangedRight Hand#8-36Stainless Steel100
RFQ
A844110.492"TangedRight Hand#8-36Stainless Steel100
RFQ
CHRISLYNN -

9/16"-18 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A841280.844"-Tanged-Right Hand---50
RFQ
A842281 1/8"-Tanged-Right Hand---50
RFQ
BR1191-91 1/8"0.679"TangedFineRight Hand200000 psi to 250000 psiRockwell C43-C50£56.376
A843281.406"-Tanged-Right Hand---50
RFQ
A844281.688"-Tanged-Right Hand---50
RFQ
A840289/16"-Tanged-Right Hand---50
RFQ
StyleModelInsert LengthTang TypeThread DirectionThread SizeMaterialPkg. Qty.
A840030.099"TangedRight Hand#3-56Stainless Steel100
RFQ
A841030.148"TangedRight Hand#3-56Stainless Steel100
RFQ
A842030.198"TangedRight Hand#3-56Stainless Steel100
RFQ
A843030.248"TangedRight Hand#3-56Stainless Steel100
RFQ
A8440319/64"TangedRight Hand#3-56Stainless Steel100
RFQ
CHRISLYNN -

9/16"-12 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
AR1185-90.844"0.682"TangedCoarseRight Hand200000 psi to 250000 psiRockwell C43-C50£51.256
B841270.844"-Tanged-Right Hand---50
RFQ
B842271 1/8"-Tanged-Right Hand---50
RFQ
B843271.406"-Tanged-Right Hand---50
RFQ
B844271.688"-Tanged-Right Hand---50
RFQ
B840279/16"-Tanged-Right Hand---50
RFQ
StyleModelInsert LengthTang TypeThread DirectionThread SizeMaterialPkg. Qty.
A843150.54"TangedRight Hand#12-28Stainless Steel100
RFQ
A840150.216"TangedRight Hand#12-28Stainless Steel100
RFQ
A841150.324"TangedRight Hand#12-28Stainless Steel100
RFQ
A842150.432"TangedRight Hand#12-28Stainless Steel100
RFQ
A844150.648"TangedRight Hand#12-28Stainless Steel100
RFQ
CHRISLYNN -

1/2"-20 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A844261 1/2"-Tanged-Right Hand---50
RFQ
A843261 1/4"-Tanged-Right Hand---50
RFQ
A842261"-Tanged-Right Hand---50
RFQ
A840261/2"-Tanged-Right Hand---50
RFQ
A841263/4"-Tanged-Right Hand---50
RFQ
BR1191-83/4"0.605"TangedFineRight Hand200000 psi to 250000 psiRockwell C43-C50£36.536
CHRISLYNN -

#12-24 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A843140.54"-Tanged-Right Hand---100
RFQ
A840140.216"-Tanged-Right Hand---100
RFQ
A841140.324"-Tanged-Right Hand---100
RFQ
BR1185-10.324"0.276"TangedCoarseRight Hand200000 psi to 250000 psiRockwell C43-C50£26.9512
A842140.432"-Tanged-Right Hand---100
RFQ
A844140.648"-Tanged-Right Hand---100
RFQ
StyleModelInsert LengthTang TypeThread DirectionThread SizeMaterialPkg. Qty.
A840619 mmTangedRight HandM9 x 1Stainless Steel100
RFQ
A8416113.5 mmTangedRight HandM9 x 1Stainless Steel100
RFQ
A8426118 mmTangedRight HandM9 x 1Stainless Steel100
RFQ
A8436122.5 mmTangedRight HandM9 x 1Stainless Steel100
RFQ
A8446127 mmTangedRight HandM9 x 1Stainless Steel100
RFQ
StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
AA1084-8EN0808 mm10.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£191.94100
AA1084-8EN12012 mm10.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£219.69100
AA1084-8EN20020 mm10.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£337.04100
AA1084-8EN24024 mm10.075 mmTanglessCoarseRight Hand200000 psiRockwell C43-C50£346.96100
CHRISLYNN -

1 1/8"-7 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
A840381 1/8"-Tanged-Right Hand---5
RFQ
BK1185-181.688"1.335"TangedCoarseRight Hand200000 psi to 250000 psiRockwell C43-C50£44.961
A841381.688"-Tanged-Right Hand---5
RFQ
A842382 1/4"-Tanged-Right Hand---5
RFQ
A843382.812"-Tanged-Right Hand---5
RFQ
A844383 3/8"-Tanged-Right Hand---5
RFQ
CHRISLYNN -

3-8 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthTang TypeThread TypeThread DirectionThread SizeMaterialPrice (inc. VAT)
A83316-1.03"Tanged-Right Hand#3-8Stainless Steel-
RFQ
B83316-1.54 1/2"TangedCoarseRight Hand#3-8Stainless Steel£367.17
CHRISLYNN -

1"-14 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthFree Coil Dia.Tang TypeThread TypeThread DirectionTensile StrengthHardnessPrice (inc. VAT)Pkg. Qty.
AK1191-161 1/2"1.171"TangedFineRight Hand200000 psi to 250000 psiRockwell C43-C50£33.161
B841371 1/2"-Tanged-Right Hand---15
RFQ
B840371"-Tanged-Right Hand---15
RFQ
B843372 1/2"-Tanged-Right Hand---15
RFQ
B842372"-Tanged-Right Hand---15
RFQ
B844373"-Tanged-Right Hand---15
RFQ
CHRISLYNN -

1 3/8"-8 Grade 304 Stainless Steel Free Running Helical Inserts

StyleModelInsert LengthTang TypeThread TypeThread DirectionThread SizeMaterialPrice (inc. VAT)
A83303-1.01 3/8"Tanged-Right Hand1 3/8"-8Stainless Steel-
RFQ
A83303-2.02 3/4"Tanged-Right Hand1 3/8"-8Stainless Steel-
RFQ
B83303-1.52.063"TangedCoarseRight Hand1 3/8"-8Stainless Steel£51.62
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Free Running Helical Inserts

Free running inserts are designed to make threads or repair worn threads inside tapped holes. They are ideal for providing reliable threading in metals, composites, wood & similar materials. These inserts are usually larger in diameter than tapped holes and are compressed while being inserted, thereby providing maximum surface contact area. Raptor Supplies offers a wide range of free running inserts in Metric, UNC and UNF thread types from Chrislynn and Heli-Coil.

Frequently Asked Questions

How to install helical inserts?

  • Drill a hole using the suggested drill bit size.
  • Tap the hole and screw the insert into the installation tool. The prong must be properly engaged in the driving contour of the tool.
  • Using the installation tool, thread the insert into the hole. Install the insert a quarter to half turn below the hole's surface.
  • If your insert has a prong, remove it with a punch or break-off tool. This allows the screw to fully enter the insert.

Where are helical inserts without prongs used?

These inserts are frequently used where debris could cause damage because there is no prong to break off and retrieve. They have coils that expand after installation to secure the insert.

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