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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M20-2.50 Thread Size, Plain - Free-Running Tanged Helical Inserts
HELI-COILFree-Running Tanged Helical Inserts

HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M20-2.50 Thread Size, Plain

The HELI-COIL Helical Insert (MPN R1084-20) is a tanged tang-style, free-running insert with M20-2.50 metric coarse right-hand threads, made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000…

SKU 3G-OTH-599071

Brand
HELI-COIL
Item
Helical Insert: Tanged Tang Style, Free-Running, M20-2.50 Thread Size, Plain
Category
Free-Running Tanged Helical Inserts
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Technical Specifications

HELI-COIL
Manufacturer Part Number
R1084-20
Type
Free-Running, M20-2.50 Thread Size, Plain, Plain, 4 PK
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HELI-COIL Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The HELI-COIL Helical Insert (MPN R1084-20) is a tanged tang-style, free-running insert with M20-2.50 metric coarse right-hand threads, made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi, supplied in a 4-pack.

Frequently Asked Questions

What is a HELI-COIL helical insert used for?

A HELI-COIL helical insert repairs or reinforces tapped threads in metal. This M20-2.50 free-running tanged insert provides strong, wear-resistant threads in aluminum, cast iron, or steel components. 3G Electric supplies these inserts for industrial maintenance and production applications worldwide.

What are the specifications of the HELI-COIL R1084-20 insert?

The HELI-COIL R1084-20 is a tanged tang-style, free-running insert with M20-2.50 metric coarse right-hand threads. It is made from 18-8 stainless steel with a tensile strength of 200,000 to 250,000 psi. Supplied in a 4-pack, it is plain finish and designed for metal substrates.

Where to buy HELI-COIL helical inserts in worldwide?

3G Electric supplies HELI-COIL helical inserts to customers worldwide. We handle full logistics, customs clearance, and delivery for the R1084-20 M20-2.50 4-pack. Contact us to order this HELI-COIL insert for your industrial thread repair or reinforcement needs.

How to install a HELI-COIL tanged helical insert?

To install a HELI-COIL tanged insert, drill out the damaged thread to the specified tap drill size, tap the hole with the correct HELI-COIL tap, then use a tang-style installation tool to wind the insert into the tapped hole. After installation, break off the tang with a punch. 3G Electric can supply the insert and tooling.

Used in

Common applications for HELI-COIL
Aerospace engine repair — HELI-COIL STI taps for M12x1.75 metric threads in aluminum alloy components
Automotive transmission rebuild — HELI-COIL STI taps for 7/16-14 UNC threads in cast iron housings
Industrial pump maintenance — HELI-COIL STI taps for #10-32 UNF threads in stainless steel pump bodies
Hydraulic cylinder repair — HELI-COIL STI taps for M6x1 metric threads in steel cylinder heads
General manufacturing — HELI-COIL STI taps for 9/16-18 UNF threads in machinery base plates

HELI-COIL Products

3G Electric supplies HELI-COIL free-running tanged helical inserts. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #10-32 Thread Size, Plain, Plain, 100 PK (MPN A1191-3CN285). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #10-32; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Fine.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #10-32 Thread Size, Plain, Plain, 100 PK (MPN A1191-3CN285). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #10-32; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Fine.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M8-1.25 Thread Size, Plain, Plain, 100 PK (MPN A1084-8CN120). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M8-1.25; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 8.3mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M8-1.25 Thread Size, Plain, Plain, 100 PK (MPN A1084-8CN120). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M8-1.25; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 8.3mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain, Plain, 100 PK (MPN A1185-4CN250). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-20; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1/4"-20 Thread Size, Plain, Plain, 100 PK (MPN A1185-4CN250). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1/4"-20; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3CN060). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M3-0.50 Thread Size, Plain, Plain, 100 PK (MPN A1084-3CN060). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M3-0.50; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 3.15mm; attr798708: 200,000 to 250,000 psi.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1 1/8"-7 Thread Size, Stainless Steel (MPN K1185-18). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1-1/8"-7; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 1 1/8"-7 Thread Size, Stainless Steel (MPN K1185-18). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 1-1/8"-7; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #4-40 Thread Size, 1,000 PK (MPN 1185-04CNW112S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #4-40; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, #4-40 Thread Size, 1,000 PK (MPN 1185-04CNW112S). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: #4-40; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-18 Thread Size, Plain, 100 PK (MPN A1185-5CN469). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 5/16"-18; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, 5/16"-18 Thread Size, Plain, 100 PK (MPN A1185-5CN469). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: 5/16"-18; attr798676: Metal; attr798705: Inch; attr798675: HELI-COIL; attr798708: 200,000 to 250,000 psi; attr798713: Coarse.
HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M8-1.25 Thread Size, Plain, Plain, 100 PK (MPN A1084-8CN080). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M8-1.25; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 8.3mm; attr798708: 200,000 to 250,000 psi.
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HELI-COIL Helical Insert: Tanged Tang Style, Free-Running, M8-1.25 Thread Size, Plain, Plain, 100 PK (MPN A1084-8CN080). Key specifications — attr798694: 18-8; attr798710: Right Hand; attr798707: M8-1.25; attr798676: Metal; attr798705: Metric; attr798675: HELI-COIL; attr798681: 8.3mm; attr798708: 200,000 to 250,000 psi.