Helical Thread Inserts: 1 1/8-12, 3.375" (3.0xD) Length, Locking, Package of 5

Helical Inserts: 1 1/8-12, 3.375" (3.0xD) Length, Locking (5 pcs)

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Part Number: 84939

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Description
Product Features

Product Specs:

Internal Thread Size: 1 1/8-12 UNF
Length: 3.375" (3x diameter)
Material: 18-8 (304) Stainless Steel
Type: Locking
Tap Size: 1 1/8-12 STI
Drill Size: 1 5/32"
Package Quantity: 5

Quickly and easily repair stripped or damaged threads, or create stronger original threads in die castings or plastics with our Helical Screw Thread Inserts. Coil tension securely holds the insert in place without undue tension on the surrounding material. The inserts are vibration and impact resistant. Made from corrosion resistant stainless steel, they offer a wide temperature tolerance.

Helical Locking Inserts have an internal locking thread that grips the bolt and prevents loosening from vibration or impact. One or more coils of the insert have a series of straight segments or chords that achieve locking action. Locking Inserts have a high reusable factor allowing frequent removal and reassembly of bolt without appreciable loss of torque. The internal locking mechanism eliminates the need for lock wiring, lock nuts, lock washers, chemical compounds and other additional tools/substances. Helical Locking Inserts are often used in Automotive, Military, Electronics, Industrial, Aviation, and Aerospace applications.

Helical Inserts are often known by the brand names Helicoil or Recoil Screw Thread Inserts. Our Precision Thread Helical Inserts are interchangeable with other brands of inserts and tooling. If you are currently using Helicoil, Recoil, or Mil Spec part numbers for your inserts, please see our Cross Reference Numbers below for an easy and accurate transition to our Precision Thread Helical Inserts from Chrislynn.

Cross Reference: Helical Insert, 1 1/8-12, 3.375" (3.0xD) Length, Locking

Chrislynn P/N: 84939
Helicoil P/N: 3591-18CN-3375
Recoil P/N: 14186
Mil-Spec P/N: MS21209-F1830

Available Modifications to our Helical Inserts...

Material - Inconel X750, Phosphor-Bronze, Nitronic 60, 316 Stainless Steel
Coatings - Dry Film, Cadmium, Silver Plating
Please call for quote & lead time for any modifications

Our Precision Thread Helical Inserts meet or exceed most applicable specifications, including: MS 122076 series, 124651 series, 21208, 21209, 33537, Mil-1-8846, and Mil-F-5577.

Not the correct size? Looking for a different length?

For a comprehensive list of our available sizes and lengths, please visit our Helical Thread Insert summary page.

1 1/4-12 Helical Insert (1.5xD), Drill Bit, STI Plug Tap & Installation Tool

1 1/4-12 Complete Helical Thread Repair Kit (1.5xD)

$313.44

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Helical Thread Repair Kit: 1 1/4-12, 1.875" (1.5xD) Length

$259.63

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Helical Insert: 1 1/4-12, 1.875" (1.5xD) Length, Free Running (1 pc)

$11.42

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Helical Inserts: 1 1/4-12, 3.750" (3.0xD) Length, Free Running (5 pcs)

$72.54

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1 5/32" HSS Reduced Shank Drill Bit (Silver & Deming)

$81.34

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1 1/4-12 HSS STI Plug Tap

$263.00

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Helical Installation & Tang Break-Off Tool: 1 1/4-12 UNF

1 1/4-12 Helical Installation & Tang Break-Off Tool

$56.87

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Helical Inserts: 1 1/8-12, 3.375" (3.0xD) Length, Locking (5 pcs)

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Helical Inserts: 1 1/8-12, 3.375" (3.0xD) Length, Locking (5 pcs)

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