FH Self-Tapping Thread Inserts – High Strength Self Tap Inserts for Plastic & Alloy Reinforcement

1. Product Overview

FH-Flight FH Self-Tapping Thread Inserts are one-piece dual-thread fasteners integrated with cutting slots or cutting holes. Unlike wire thread inserts, they eliminate pre-tapping procedures for base holes, only requiring standard pre-drilling before installation.
As the core solution for lightweight manufacturing thread reinforcement, they create wear-free, vibration-resistant high-load internal threads inside low & medium shear strength substrates, and can perfectly repair stripped, damaged threaded holes without replacing entire workpieces.

We supply complete series to cover diverse working conditions:

• 302 Series (Cutting Slot): For low shear strength materials (aluminum, magnesium, plastic, hardwood)
• 307/308 Series (Cutting Hole): For medium/high shear strength materials (cast iron, copper alloy)
• 337/338 Series (Chip Storage Hole): Special for precision electronic devices, stores cutting debris to avoid component failure
• Hex Socket Type (302 2 / 307 2): Fast batch mounting with hex drive tools
• Shouldered Type (302 1 / 307 1): Flange shoulder provides anti-pull support for multi-layer assembly

Metric (M2-M30) & Imperial (UNC/UNF 4-40 ~ 5/8-18) thread standards are fully covered. Internal thread tolerance ISO 6H / ANSI 2B meets global industrial standards.

2. Core Key Advantages

✅ No Pre-Tapping Required: Save tapping process, cut production time & tool cost by 40%+
✅ Ultra High Pull-Out & Torque Resistance: Large contact area with base material, uniform stress distribution
✅ Excellent Anti-Vibration Performance: Zero clearance fit, no loose under long dynamic vibration
✅ Wide Material Compatibility: Fit aluminum, magnesium, cast iron, brass, plastic, laminate, hardwood
✅ Dual Functions: New part thread reinforcement + waste part thread repair
✅ Multiple Installation Ways: Manual bolt-nut fixture, electric/pneumatic dedicated mounting tools
✅ Diverse Material & Surface Options: Carbon steel, 304/303/316 stainless steel, titanium, brass

3. Full Series Classification

4. Materials & Surface Finishes (Part Number Suffix Code)

• Standard Technical SpecsThread Tolerance
  Internal thread: Metric ISO 6H; Imperial UNC/UNF ANSI 2B
  External thread: FH proprietary standard, tight tolerance ISO 2768-mSize Range
  Metric: M2, M2.5, M3, M3.5, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24, M27, M30
  Imperial UNC/UNF: 4-40, 6-32, 8-32, 10-24, 1/4-20, 5/16-18, 3/8-16 etc.Pilot Hole Reference
  Each size matched fixed drill diameter & blind hole minimum depth; reference table on catalog page 8–14
• Two Installation Method
• Small Batch Manual Mounting
• Match same bolt + double lock nut, clamp insert on bolt, screw into pre-drilled hole with wrench, then back out bolt. No special tool needed for lab & small workshop.
• Mass Production Automated Mounting
  Special self-tapping insert mounting mandrel with hex drive, compatible with hand torque wrench, electric & pneumatic screwdrivers, 360° fast feeding for assembly lines.
• Wide Application Industries
• New Energy Vehicles: Battery packs, motor plastic casings, control modules
• Aerospace & Military: Light alloy structural components
• Communication Electronics: 5G base station housings, sensor parts, precision instruments
• Medical Equipment: Non-magnetic brass & titanium inserts
• General Machinery: Hydraulic parts, gearbox, casting repair
• Household Appliance & Molds: Plastic injection mold thread reinforcement
• Rail Transit: Lightweight carriage connection components

8. About Manufacturer – FH-Flight

Xinxiang Flight Fasteners Co., Ltd (FH-Flight) with 20+ years threaded insert manufacturing experience. We hold ISO9001 & GJB9001 military quality certifications, 47 national patents.
Full automatic production lines, strict incoming & finished product inspection. Support standard stock & OEM custom non-standard self-tapping inserts, fast delivery for global distributors & end manufacturers.