Description
Helicoil 5621 Inch Coarse Master Set designed to repair and restore stripped or damaged threads in a variety of sizes, this set provides an ideal solution for professionals and DIY enthusiasts in automotive, machinery, and mechanical applications.
Features:
- Thread Size 1/4-20″ x .375 Length
- Includes Insert Package Part No. R1185-4, Tap Part No. 819-4, Installation Tool Part No. 5288-4
- Drill Size: 17/64″ (Drill bit not included)
- 12 Inserts for thread size 1/4-20″ x .375 length
- Thread Size 5/16-18″ x .469 Length with Insert Package Part No. R1185-5
- Tap Part No. 819-5 and Installation Tool Part No. 5288-5
- Drill Size: 21/64″ (Drill bit not included)
- 12 Inserts for thread size 5/16-18″ x .469 length
- Thread Size 3/8-16″ x .562 Length with Insert Package Part No. R1185-6
- Tap Part No. 819-6 and Installation Tool Part No. 5288-6
- Drill Size: 25/64″ (Drill bit not included)
- 12 Inserts for thread size 3/8-16″ x .562 length
- Thread Size 7/16-14″ x .656 Length with Insert Package Part No. R1185-7
- Tap Part No. 819-7 and Installation Tool Part No. 5288-7
- Drill Size: 29/64″ (Drill bit not included)
- 6 Inserts for thread size 7/16-14″ x .656 length
- Thread Size 1/2-13″ x .750 Length with Insert Package Part No. R1185-8
- Tap Part No. 819-8 and Installation Tool Part No. 5288-8
- Drill Size: 17/32″ (Drill bit not included)
- 6 Inserts for thread size 1/2-13″ x .750 length
Benefits:
- Restores and repairs stripped or damaged threads quickly and easily
- Comprehensive set with a wide range of thread sizes for versatile use
- Durable stainless steel inserts for long-lasting repairs
- Easy to use with clear instructions and all necessary components included
- Ideal for both professional mechanics and DIY enthusiasts
Technical Specifications:
- Model: 5621
- Thread Sizes: 1/4-20″, 5/16-18″, 3/8-16″, 7/16-14″, 1/2-13″
- Inserts Per Kit: 12 Inserts for each of the smaller sizes, 6 Inserts for the largest sizes
- Packaging: Master set packaging for easy storage and access






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