Helical Coil Wire Thread Inserts Materials
304 Stainless Steel –
• Standard, general-purpose material
• Ideal for original equipment applications, repair, and overhaul
• Stocked in most sizes
Inconel X750 –
• Used in areas exposed to high temperatures
• Typical uses: gas turbine engines, nuclear applications, well drilling
• Non-magnetic
• Phosphor Bronze
• Ideal for salt water applications
• Non-magnetic
• Excellent electrical conductivity
Nitronic 60® –
• Superb gall resistance
• Compatible with stainless steel screws
• Ideal for use in vacuum environments
• Requires no additional coatings or plating
• Particle-free
• Non-magnetic
• Titanium
• Superior strength-to-weight ratio
• Corrosion-resistant
• Excellent low-temperature stability
Helical Coil Inserts Coatings & Platings
Dry Film Lubricant –
• Provides additional lubrication in high-friction applications
• High temperature resistance (400°F)
• Highly recommended with helical coil screw-locking inserts
• Mildly corrosive
• Material Spec: AS5272
• Color: Gray
• RoHS-compliant; contains no chromates
• Eliminates need for zinc primers and epoxies
• Provides uniform top-to-bottom coverage
• Prevents galvanic corrosion between insert and parent material
• Eliminates locking torque issues associated with primers
• Improves installation productivity
• Provides additional lubrication facilitating insert installation
• Material Spec: None
• Color: Matte Black
Cadmium –
• For military specification purposes only
• Not recommended for new design due to its toxic nature
• Cadmium Plating Material Spec: QQ-P-416 Type II
• Color: Iridescent Yellow (free-running)
• Color: Olive Drab (screw-locking)
Silver Plating –
• Recommended to reduce galling of threads at high temperatures
• For use up to 1200°F
• Highly recommended with inserts made from Inconel X750
• Material Spec: QQ-S-365
• Color: Silver White
Color Coding –
• Facilitates verification of insert installation
• Allows for quick identification of similar-size inserts
• Available in Blue, Green, Red, and Black