Description
Helicoil R1191-7 Replacement Inserts, 7/16″ x 20 NF, 6 Pack are designed to restore damaged threads in automotive, industrial, and mechanical applications. These free-running helical inserts are made from high-quality 304 stainless steel for durability and strength. The Helicoil R1191-7 inserts are perfect for repairing 7/16″-20 NF threads, ensuring a reliable and precise fit. This 6-pack is ideal for quick, efficient thread repairs and offers a long-lasting solution for metal applications.
Features:
- Item: Helical Insert
- Type: Free Running Helical
- Material: 304 Stainless Steel
- Internal Thread Size: 7/16-20
- Thread Type: UNF
- Thread Direction: Right Hand
- Length: 0.750″
- Free Coil Dia.: 0.563″
- Tap Sizes: 7/16-20 STI
- Drill Size: 27/64″
- Tensile Strength (PSI): 200,000 to 250,000
- Rockwell Hardness: C43-C50
- Application: For Metal
- Package: Quantity 6
Benefits:
- Repairs damaged or worn threads quickly and easily.
- Free-running design allows for smooth and efficient installation.
- Made from durable 304 stainless steel for long-lasting strength and corrosion resistance.
- Ideal for automotive, mechanical, and industrial repairs.
- Prevents the need for expensive replacements or rework by restoring thread integrity.
Technical Specifications:
- Model: R1191-7
- Thread Size: 7/16″-20 NF
- Material: 304 Stainless Steel
- Length: 0.750″
- Tensile Strength: 200,000 to 250,000 PSI
- Rockwell Hardness: C43-C50
- Drill Size: 27/64″
- Package: 6 Inserts





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