Heli-Coil 5546-12 Metric Thread Repair Kit, M12 x 1.75, 18 mm Insert Length, 6 Inserts

Heli-Coil 5546-12 Metric Thread Repair Kit, M12 x 1.75, 18 mm Insert Length, 6 Inserts

• Heli-Coil 5546-12 is a metric thread repair kit used to restore damaged internal threads to M12 x 1.75. It is commonly used for repairs such as cylinder head bolt holes and drain plug threads. The kit provides the matched tools and inserts needed to install wire thread inserts for a durable repaired thread.
• Features:
  • Thread Size: M12 x 1.75 kit is built to restore internal threads to the original M12 x 1.75 fastener size.
  • Insert Length: 18 mm insert length supports thread engagement for common service repairs.
  • Repair Application: Designed for restoring damaged threads such as cylinder head bolt holes and drain plug threads.
  • Matched Components: Kit provides the matching tap and installation tool intended for the included inserts.
  • replacement and Fitment: Thread repair kit for M12 x 1.75 holes, not a replacement part for another SKU.
• Includes:
  • Heli-Coil tap for M12 x 1.75
  • Heli-Coil installation tool for M12 x 1.75 inserts
  • Stainless steel thread repair inserts, M12 x 1.75, 18 mm length, quantity 6
  • Instructions
• Specifications:
  • Manufacturer: Heli-Coil
  • Part Number: 5546-12
  • MPN: 5546-12
  • UPC: 025964120250
  • Product Name: Metric Thread Repair Kit
  • Category: Fasteners
  • Subcategory: Thread Repair
  • Product Type or Function: Thread Repair Kit with Wire Thread Inserts
  • Thread Size Repaired: M12 x 1.75
  • Insert Length: 18 mm
  • Insert Style: Free Running
  • Insert Material: Stainless Steel
  • Drill Size Required: 31/64"
  • Quantity: 6 inserts
  • System Compatibility or Application: Designed to restore damaged internal threads to M12 x 1.75, commonly used on cylinder head bolt holes and drain plug threads
• The Metric Thread Repair Kit can also be referred to as M12 x 1.75 thread repair kit, Heli-Coil insert kit, wire thread insert kit, metric thread insert repair kit, and stripped thread repair kit.

Heli-Coil is a thread repair and thread reinforcement brand within the Stanley Engineered Fastening portfolio. The product line includes wire thread inserts and repair tooling used in industrial maintenance, automotive service, and manufacturing to restore or strengthen threaded holes.

Q: What thread size does Heli-Coil 5546-12 repair?
A: It repairs internal threads to M12 x 1.75.

Q: How many inserts are included and what is the insert length?
A: The kit includes 6 inserts, and the insert length is 18 mm.

Q: What drill size is required before tapping?
A: The required drill size is 31/64".

Q: What are common applications for this kit?
A: It is commonly used to repair damaged threads such as cylinder head bolt holes and drain plug threads where M12 x 1.75 fasteners are used.