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M6 M8 M10 Metric Thread Repair Kit, 30 Stainless Inserts, 3 Sizes
✅ In stock
F
Grade
⚠️ Price may have changed. Last updated 24+ hours ago — confirm on Amazon.
Check Deal at Amazon
Price verified Nov 3, 2026 9:28 AM · Prices & availability subject to change
Is This a Good Price on Amazon?
💤 Not a Deal- 💤Verdict: Not a Deal. Price is at or above historical norms. Best to wait for a sale.
- ➡️Pricing has held fairly steady, with no strong push in either direction.
How We Scored This Deal
Price Competitiveness
0/28
Recent Value
0/22
Market Standing
0/20
Deal Strength
0/20
Momentum
0/10
📝 Product Overview
🏪 Sold by
Kolvoii Direct Store
📦 Fulfillment
Fulfilled by Amazon
🚚 Shipping
Free Shipping
Product Details
✓3 SIZES IN ONE BOX: M6 x 1.0, M8 x 1.25, M10 x 1.25 – The three metric sizes behind most stripped cover, housing, and crankcase bolts, each with its own insert length (9.4mm, 11.7mm, 14mm). One box replaces three separate kits, so the size you need is already on the box when a bolt strips
✓MATCHED TOOLING FOR EVERY SIZE – Each size ships with its own HSS drill bit, HSS tap, counterbore, and installation driver, cut for that insert: no reusing an M6 drill on an M8 hole, no mismatched tap. 30 solid inserts in total (10 per size)
✓SOLID WALL, NOT A COILED WIRE INSERT – Each bushing is machined from one piece of 304 stainless steel, so there is no coil to unwind or shift under load. 304 resists corrosion and thread galling in aluminum, cast iron, and steel housings, which holds up through repeated assembly and high-vibration use
✓FLUSH FIT DEPENDS ON THE COUNTERBORE – The counterbore cuts the recessed seat that lets the flanged insert sit flush or slightly below the mating surface. Work in small steps and check depth often: too shallow leaves the insert standing proud, too deep removes the material it grips. Use cutting oil when drilling and tapping
✓FOUR STEPS PER SIZE, NO MACHINE SHOP TRIP – Drill, counterbore, tap, and install on a drill press; the spindle keeps the bit square, so the insert seats straight and the flange sits flat. Match the bolt's diameter and pitch to M6, M8, or M10 before you order
⚙️ Specifications
Size
M6 x 1.0, M8 x 1.25, M10 x 1.25
Color
Silver
Material
Stainless Steel
Brand
Kolvoii
Fastener Type
Solid
Size Name
M6 x 1.0, M8 x 1.25, M10 x 1.25
Number of Pieces
42
Thread Size
9.4mm x 1.0mm
Material Type
Stainless Steel
Item Highlight
M6x1.0x9.4mm, M8x1.25x11.7mm, M10x1.25x14mm. 304 Stainless Inserts, HSS Drill, Tap, Driver, for Steel, Iron & Aluminum Repair
Unit Count
42 Count
