E-Z LOK EZ-0310-03 Thread Repair Kit – Helical Coil Insert Solution | E-Z LOK Standard Series
Engineering Background: Stripped or damaged internal threads are among the most common failure points in precision assemblies, particularly in aluminum, magnesium, and soft-metal housings subjected to repeated fastener cycling. The E-Z LOK EZ-0310-03 Thread Repair Kit provides a field-proven, permanent solution that restores thread integrity to OEM specification—or exceeds it—without replacing the parent component.
Product Positioning: Designed for maintenance engineers, MRO technicians, and production line repair teams, the EZ-0310-03 targets #10-32 UNF internal thread restoration in industrial, aerospace-adjacent, and general mechanical applications. The kit consolidates all required tooling into a single, ready-to-deploy package, minimizing downtime and eliminating the need for sourcing individual components.
Complete Technical Specifications
- Part Number: EZ-0310-03
- Brand: E-Z LOK
- Series: Standard Thread Repair Kit
- Thread Size: #10-32 UNF (Unified Fine Thread)
- Insert Material: 304 Stainless Steel (standard); optional phosphor bronze available separately
- Insert Type: Helical coil (wire thread insert)
- Insert Length Options: 1×D, 1.5×D, 2×D (varies by kit configuration)
- Parent Material Compatibility: Aluminum, magnesium, cast iron, steel, thermoplastics, composites
- Kit Contents: Helical coil inserts (assorted lengths), drill bit (correct tap drill size), #10-32 UNF tap, installation tool, tang break-off tool
- Drill Size: Per E-Z LOK specification for #10-32 UNF parent thread
- Finish: Bright (uncoated stainless)
- Operating Temperature: -200°C to +800°C (stainless steel inserts)
- Country of Origin: USA
- Weight: Approx. 19 g (kit)
- Package Type: Plastic case / blister pack
Proven Application Environments
- CNC machine tool housings and fixture plates with stripped #10-32 tapped holes
- Automotive and powertrain aluminum castings requiring thread restoration without component replacement
- Electronic enclosures and instrument panels with repeated fastener removal cycles
- Aerospace ground support equipment (non-flight-critical assemblies)
- Industrial pump and valve bodies in MRO settings
- Robotics and automation frames where soft-metal thread wear is common
Engineering Advantages
- Permanent Repair: Installed inserts are locked in place and do not back out under vibration or thermal cycling
- Strength Upgrade: Stainless steel inserts in aluminum parent material yield a stronger thread than the original tapped hole
- All-in-One Kit: No additional tooling required; drill, tap, and installation tool included
- Corrosion Resistance: 304 SS inserts resist oxidation in humid and chemically active environments
- Dimensional Accuracy: Inserts conform to ASME B18.29.1 / DIN 8140 standards for helical wire inserts
- Reusable Tooling: Installation and tang break-off tools are reusable across multiple repair operations
System Architecture & Signal Flow
The EZ-0310-03 repair process follows a deterministic three-stage workflow:
- Preparation: Drill out the damaged thread using the included drill bit to the specified tap drill diameter for #10-32 UNF.
- Tapping: Re-tap the drilled hole using the included #10-32 UNF tap to create the oversize parent thread that accepts the helical insert.
- Installation: Wind the helical coil insert into the tapped hole using the installation tool until flush or 0.5–1 pitch below the surface; break off the drive tang using the tang break-off tool.
The installed insert presents a standard #10-32 UNF internal thread to the mating fastener, fully restoring the original interface geometry.
Sourcing & Quality Verification
- OEM Source: E-Z LOK (Gardena, CA, USA) — direct authorized distribution channel
- Authenticity: All units sourced through verified supply chain; counterfeit risk mitigated via lot traceability
- Inspection: Inserts inspected for coil pitch uniformity, wire diameter tolerance, and surface finish prior to dispatch
- Certification: RoHS compliant; material certifications available upon request for regulated industries
- Shelf Life: Indefinite when stored in dry conditions; no lubricant or adhesive pre-applied that degrades over time
Procurement Process
- Confirm thread size requirement: #10-32 UNF — verify against your assembly drawing or failed fastener specification.
- Select quantity: single kit for field repair or multi-pack for production line MRO stock.
- Add to cart and proceed to checkout; bulk pricing available for orders of 10+ kits — contact [email protected].
- Lead time: in-stock items ship within 1–3 business days; international orders dispatched via tracked courier.
- For OEM integration or custom insert specifications, submit a technical inquiry with your drawing reference.
Technical FAQ
Q: Can this kit repair threads in hardened steel?
A: The included tap is designed for use in soft-to-medium parent materials (aluminum, cast iron, mild steel). Hardened steel requires carbide tooling not included in this kit.
Q: Is the repair reversible?
A: No. Once installed, the helical insert is a permanent feature of the parent component. Plan accordingly for assemblies requiring future disassembly.
Q: What is the torque capacity of the repaired thread?
A: In aluminum parent material, the repaired #10-32 UNF thread typically exceeds the tensile strength of the mating fastener — the fastener will fail before the insert pulls out under static load.
Q: Are replacement inserts available separately?
A: Yes. E-Z LOK sells refill insert packs for EZ-0310-03 compatible sizes. Contact us for part numbers and pricing.
Q: Does Konmask.com ship internationally?
A: Yes. We ship to most countries worldwide. Duties and import taxes are the responsibility of the buyer. Contact us for a shipping quote to your region.
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