What does the '1D' or '2D' part of the size mean?

The 'D' stands for the nominal diameter of the screw you're repairing. A 1D insert has an installed length equal to the diameter, so an M6 1D insert is 6mm long. A 2D insert would be twice the diameter, or 12mm long.

Do I need special tools to fit these thread inserts?

Yes, you do. You'll need the correct size drill and tap to prepare the hole, and a specific insertion tool to wind the coil in without damaging it. These aren't included with the inserts themselves.

Can I use these to repair a stripped thread in an aluminium engine block?

Absolutely. These inserts are made from stainless steel, which creates a much stronger and more wear-resistant thread than the original one in the soft aluminium. They are ideal for this kind of repair.

Thread Repair Kit | M1.6-M24 Inserts | Stainless Steel Bushing Set

Name: Thread Repair Kit | M1.6-M24 Inserts | Stainless Steel Bushing Set
Brand: Compel
SKU: THRE-00002
Price: 4.49 USD
Availability: InStock
Rating: 4.8 (294 reviews)

Stock #:CMP-04491

SKU:THRE-00002

Thread Repair Kit | M1.6-M24 Inserts | Stainless Steel Bushing Set - Image 1

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Thread Repair Kit | M1.6-M24 Inserts | Stainless Steel Bushing Set

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Questions about this product

What does the '1D' or '2D' part of the size mean?: The 'D' stands for the nominal diameter of the screw you're repairing. A 1D insert has an installed length equal to the diameter, so an M6 1D insert is 6mm long. A 2D insert would be twice the diameter, or 12mm long.
Do I need special tools to fit these thread inserts?: Yes, you do. You'll need the correct size drill and tap to prepare the hole, and a specific insertion tool to wind the coil in without damaging it. These aren't included with the inserts themselves.
Can I use these to repair a stripped thread in an aluminium engine block?: Absolutely. These inserts are made from stainless steel, which creates a much stronger and more wear-resistant thread than the original one in the soft aluminium. They are ideal for this kind of repair.

Thread Repair spec sheet (PDF)

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This M24 stainless steel thread repair kit fixes stripped, crossed, or damaged threads. You can make new, stronger threads in softer metals like aluminum. This helical screw thread repair kit is a permanent fix for high-stress automotive or industrial uses. Features and Benefits - 304 stainless steel inserts - These inserts are strong and resist rust well. They last longer than the original threads, especially in engines. - Spring-like coiled design - The M24 helicoil insert spreads the load evenly. This creates a connection often stronger than the base material. - Complete M24 x 3.0 kit - It comes with the right size drill bit, STI tap, inserts, and installation tool. This makes for a correct repair. - Repairs stripped M24 threads - It brings parts back to their original use. This saves you from buying costly replacement components. Applications - Automotive Repair: This M24 stainless steel helicoil thread repair kit is essential for fixing threads in engine blocks, transmissions, and suspension parts. - Industrial Machinery: Fix worn threads on heavy equipment. This helps reduce downtime and keeps operations safe. - Metalworking DIY: Use these M24 stainless steel coiled wire inserts. They add strong, reusable threads to your custom fabrication projects.

Thread Sizes: M1.6, M2, M2.5, M3.5, M4, M5, M6, M8, M24. Material: Stainless Steel. Insert Type: Coiled Wire Helical Screw Bushing Sleeve. Model Number: SS0735. Product Type: Thread Repair Kit. Thread Insert Sizes Included: M1.6, M2, M2.5, M3.5, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24. Material: Stainless Steel (likely 304 or 316 grade for corrosion resistance). Operating Temperature Range: -20°C to 400°C (approximate, depends on specific alloy). Application: Thread Repair, Reinforcement, and Restoration. Brand Name: XMSJ. Chemical Concern: None (High-concerned chemical: None). Corrosion Resistance: High (due to stainless steel construction). DIY Suitability: Yes (DIY Supplies). Insert Type: Coiled Wire Helical Screw Bushing (Helicoil type). Kit Contents: Assortment of thread inserts, installation tools (taps, tang break tools, installation mandrels, drills may be included). Model Number: SS0735. Product Name: Stainless Steel Coiled Wire Helical Screw Bushing Sleeve Set Thread Inserts Thread Repair Kit. Tensile Strength: Varies by specific stainless steel grade, typically >500 MPa. Thread Engagement: Typically 60-75% for optimal strength. Thread Type: Metric Coarse and Fine (depending on specific inserts). Q: What specific metric sizes are included in this thread insert assortment? A: This kit provides a broad range of common metric sizes. You'll get inserts for M1.6, M2, M2.5, M3.5, M4, M5, M6, M8, and sizes up to M24.. Q: What specific metric sizes are included in this thread insert assortment? A: This kit provides a broad range of common metric sizes. You'll get inserts for M1.6, M2, M2.5, M3.5, M4, M5, M6, M8, and sizes up to M24.. Q: What specific metric sizes are included in this thread insert assortment? A: This kit provides a broad range of common metric sizes. You'll get inserts for M1.6, M2, M2.5, M3.5, M4, M5, M6, M8, and sizes up to M24.. Q: What material are these coiled wire inserts made from? A: They are constructed from stainless steel. This gives them good strength and helps protect the new threads from corrosion.. Q: What material are these coiled wire inserts made from? A: They are constructed from stainless steel. This gives them good strength and helps protect the new threads from corrosion.. Q: What material are these coiled wire inserts made from? A: They are constructed from stainless steel. This gives them good strength and helps protect the new threads from corrosion.. Q: I need a thread repair kit for an aluminum part. Will these work? A: Yes, this is exactly what they are for. Installing one of these stainless steel inserts into a softer metal like aluminum creates a new thread that is much stronger than the original.. Q: I need a thread repair kit for an aluminum part. Will these work? A: Yes, this is exactly what they are for. Installing one of these stainless steel inserts into a softer metal like aluminum creates a new thread that is much stronger than the original.. Q: I need a thread repair kit for an aluminum part. Will these work? A: Yes, this is exactly what they are for. Installing one of these stainless steel inserts into a softer metal like aluminum creates a new thread that is much stronger than the original.. Q: What's the policy if I find a defective insert in the set? A: We check our kits for quality, but if you happen to find an insert with a manufacturing flaw, just contact us. We'll be happy to send a replacement or sort it out for you.. Q: What's the policy if I find a defective insert in the set? A: We check our kits for quality, but if you happen to find an insert with a manufacturing flaw, just contact us. We'll be happy to send a replacement or sort it out for you.. Q: What's the policy if I find a defective insert in the set? A: We check our kits for quality, but if you happen to find an insert with a manufacturing flaw, just contact us. We'll be happy to send a replacement or sort it out for you.. Q: Is it worth buying the whole set if I only need one size for a single repair? A: For a workshop or anyone who does regular repairs, this set is a better value than buying sizes individually. Having a full range on hand saves you time and shipping costs on future projects.. Q: Is it worth buying the whole set if I only need one size for a single repair? A: For a workshop or anyone who does regular repairs, this set is a better value than buying sizes individually. Having a full range on hand saves you time and shipping costs on future projects.. Q: Is it worth buying the whole set if I only need one size for a single repair? A: For a workshop or anyone who does regular repairs, this set is a better value than buying sizes individually. Having a full range on hand saves you time and shipping costs on future projects..

Thread Repair Kit | M1.6-M24 Inserts | Stainless Steel Bushing Set

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