MZG Threading Inserts System
Threading Inserts. The screw thread is a fundamental mechanical feature, and its precise and reliable creation is paramount to the function and safety of countless products. Our threading insert system is built on a foundation of precision-ground profiles and advanced material grades, designed to provide a complete solution for any threading challenge. Each insert is a product of meticulous engineering, designed to cut a specific, standard-compliant thread profile with exceptional accuracy and surface finish. Our portfolio covers the full spectrum of applications, from general-purpose fastening to high-pressure sealing and mission-critical power transmission.
General Fastening Thread Performance
For creating the world's most common mechanical connections, our inserts for 60° Metric (ISO) and 60° Unified (UN, UNC, UNF) threads deliver superior performance with precision-ground full profile ensuring perfect thread form.
High-Integrity Sealing Thread Performance
Our pipe thread inserts provide exceptional sealing performance for tapered threads like NPT, NPTF (American Standard) and BSPT (British Standard) with exacting precision on both flank angles and taper angle.
Robust Power Transmission Thread Performance
For applications that convert rotary motion into linear motion, our trapezoidal and buttress thread inserts deliver outstanding performance in strength and efficiency with strong, wide profiles capable of handling high loads.
Product Performance
The performance of our threading inserts is best categorized by their primary application, as each profile is engineered to fulfill a distinct functional requirement.
General Fastening Thread Performance: For creating the world's most common mechanical connections, our inserts for 60° Metric (ISO) and 60° Unified (UN, UNC, UNF) threads deliver superior performance. The precision-ground full profile ensures a perfect thread form, guaranteeing interchangeability and optimal load distribution for maximum fastening strength. Similarly, our 55° Whitworth (BSW, BSF) inserts provide reliable performance for British standard fastening applications. The performance benchmark here is consistency, reliability, and adherence to global standards.
High-Integrity Sealing Thread Performance: When a leak-proof connection is required, our pipe thread inserts provide exceptional sealing performance. Inserts for tapered threads like NPT, NPTF (American Standard) and BSPT (British Standard) are ground with exacting precision on both the flank angles and the taper angle. The performance of NPTF (Dryseal) inserts is particularly noteworthy, as their profile is designed to create a metal-to-metal seal without the need for chemical sealants.
Robust Power Transmission Thread Performance: For applications that convert rotary motion into linear motion, our trapezoidal and buttress thread inserts deliver outstanding performance in strength and efficiency. Our 30° Trapezoidal (TR) and 29° ACME / STUB ACME inserts feature a strong, wide profile capable of handling high loads, making them ideal for lead screws, jacks, and machine tool components.
Key Performance Indicators
- Full Profile Design: Complete thread form machined simultaneously for perfect compliance
- Standard Compliance: ISO, UN, NPT, API and other global standards
- Material Versatility: Steel, stainless steel, titanium, superalloys coverage
- Advanced Coatings: CVD/PVD coated grades for extended tool life
- Process Security: Robust design ensures reliable, repeatable performance
Our Products
60° Metric Threading Insert
A61Precision threading insert for metric standard threads
55° Whitworth Thread Insert
A63British standard Whitworth threading insert
60° Unified Thread Insert
A65American unified thread standard insert
60° UNJ Aviation Industry Thread Insert
A66Aerospace industry UNJ threading insert with controlled root radius
80° PG Conduit Thread Insert
A66Steel conduit threading insert for electrical applications
BSPT Thread Insert
A67British standard taper pipe threading insert
RND Thread Insert
A67Round thread pipe threading insert for special applications
NPT Thread Insert
A68American standard taper pipe threading insert
NPTF Thread Insert
A68American standard dryseal taper pipe threading insert
29° ACME Thread Insert
A69American standard trapezoidal threading insert
29° STUB ACME Thread Insert
A69American standard stub trapezoidal threading insert
30° Trapezoidal Thread Insert
A70Metric trapezoidal threading insert
ABUT 45°+7° Buttress Thread Insert
A71Asymmetric buttress threading insert for high axial loads
BBUT 45°+7° Buttress Thread Insert
A71Heavy-duty buttress threading insert
30°+3° SAGE Buttress Thread Insert
A72SAGE buttress threading insert for extreme loads
API Petroleum Pipe Thread Insert
A73API standard petroleum pipe threading insert
BUT Casing Thread Insert
A74Buttress casing thread insert for oil & gas industry
EL Casing Thread Insert
A74External left-hand casing thread insert
Product Gallery
Technical Parameters
Thread Profile
Each insert is ground to a specific profile defined by its flank angle, crest and root specifications. Key profiles include V-Threads: 60° (Metric, UN, NPT), 55° (Whitworth, BSPT), Trapezoidal Threads: 29° (ACME), 30° (TR), Buttress Threads: Asymmetrical profiles like 45°+7° (ABUT, BBUT) and 30°+3° (SAGE), Round Threads (RND), and Specialized Profiles: API, BUT, EL, UNJ with specific root radii and tapers.
Insert Type & Size
Our system uses the standard ISO designation: ER (External Right-hand), EL (External Left-hand), IR (Internal Right-hand), and IL (Internal Left-hand). Inserts are available in standard ISO sizes (e.g., 11, 16, 22, 27), which correspond to the inscribed circle (IC) diameter and thickness, determining which standard tool holder they fit.
Grade and Coating
Our inserts are available in a range of advanced coated carbide grades allowing a single insert profile to be effectively used on a wide range of materials, including Steel (P), Stainless Steel (M), Cast Iron (K), and even Titanium/Superalloys (S), simply by selecting the appropriate material-specific grade.
Application Scenarios & Applicable Machining
Application Scenarios
- General Engineering & Machine Building: Creating standard metric and unified threads for bolts, studs, and all forms of mechanical fastening
- Automotive Industry: Machining threads for engine components, drivetrain parts, and chassis fasteners
- Aerospace Industry: Producing high-strength UNJ threads with superior fatigue resistance for critical airframe and engine components
- Oil & Gas Industry: Machining robust and reliable API, Casing, and Tubing threads for downhole equipment, drill pipes, and wellhead connections
- Hydraulics & Pneumatics: Cutting tapered NPT, NPTF, and BSPT pipe threads for leak-proof fittings, valves, and cylinders
Machining Operations
- External Threading: Creating external threads on shafts, bolts, and cylindrical components using ER and EL series inserts
- Internal Threading: Machining internal threads in holes, nuts, and threaded bores using IR and IL series inserts
- Tapered Pipe Threading: Creating NPT, NPTF, and BSPT tapered threads for pressure-tight connections
- Power Transmission Threading: Machining ACME and trapezoidal threads for lead screws and motion control applications
- Specialized Threading: Creating API, UNJ, buttress, and other mission-critical thread profiles for industry-specific applications
Main Functions
Primary Functions
- Produce Standard-Compliant Threads: Accurately replicate internationally recognized thread standards (ISO, UN, BSW, NPT, API, etc.)
- Guarantee Precision and Interchangeability: Create threads with such high accuracy that they ensure perfect fit and function with their mating parts
- Provide Universal Threading Coverage: Offer a comprehensive system that provides a solution for virtually every known thread type
Performance Benefits
- Enable High-Performance Machining Across All Materials: Allow efficient threading of the full spectrum of industrial materials with material-specific carbide grades
- Ensure Process Security and Economic Efficiency: Provide robust, reliable, and indexable tooling solution that delivers high-quality threads, long tool life, and excellent cost-per-thread
- Full Profile Design Advantage: Machine the complete thread form simultaneously, ensuring burr-free crests and eliminating secondary operations
Need Professional Threading Insert Solutions?
Our technical team can help you select optimal threading inserts for specific thread standards and material requirements. From general fastening to specialized industry applications, we provide comprehensive threading solutions for all materials and thread types.
