The Ultimate Bonding Solution for Plastic & Composite Assemblies

Our Brass Knurled Inserts are engineered to provide permanent, high-strength threaded holes in plastic housings and components. Whether you are using Injection Molding, 3D Printing, or Post-Mold Installation, our inserts ensure a rock-solid bond that resists heavy vibration and repeated fastening cycles.

In our Jamnagar facility, we focus on the geometry of the knurl—the secret to preventing the insert from turning or pulling out under stress.

Optimized Knurling Patterns

We offer various knurling styles designed for specific plastic densities and installation methods:

• Diamond Knurling: Provides superior resistance to both torque (twisting) and pull-out.
• Straight/Parallel Knurling: Ideal for deep-hole applications and ensuring straight alignment.
• Unidirectional/Opposing Knurls: Best for high-torque applications where the screw is frequently tightened and loosened.
• Undercut Designs: Features a "waist" in the design for plastic to flow into, creating an unbreakable mechanical lock.

Installation Versatility

Our inserts are designed for every manufacturing workflow:

• Heat Staking & Ultrasonic: Precision-tapered leads for fast, smooth installation into thermoplastics.
• Molded-In: Heavy-duty knurls designed to stay centered during the high-pressure injection molding process.
• Press-In: Designed with sharp, biting knurls for cold-press installation into softer plastics or wood.

Technical Specifications

• Material: Premium Free-Cutting Brass (CW614N / CZ121 / IS 319) for exceptional thread strength.
• Thread Sizes: M1.4 to M20; also available in BA, BSW, UNC, and UNF.
• Tolerances: Controlled to within ±0.02mm for seamless integration with automated feeders.
• Plating: Natural Brass finish or Nickel/Tin plating for enhanced corrosion resistance and aesthetics.

The Leak-Proof Core for Modern Plumbing Systems

Our Brass CPVC Inserts are the gold standard for transition fittings in the plumbing and potable water industry. Designed specifically to be over-molded into CPVC (Chlorinated Polyvinyl Chloride) pipes and fittings, these inserts provide a high-strength threaded interface that bridges the gap between plastic piping and metal valves or faucets.

We manufacture these inserts with specialized hexagonal and heavy-duty knurled outer profiles to ensure they never rotate or leak, even under high-pressure spikes or thermal expansion.

Key Performance Features

• DZR (Dezincification Resistant) Brass: Available in specialized alloys that prevent "mercury-season cracking" and corrosion in aggressive water conditions.
• Lead-Free Compliance: We manufacture Lead-Free Brass Inserts that meet strict international health standards (RoHS & NSF) for safe drinking water systems.
• Superior Mechanical Grip: Engineered with deep grooves and sharp knurls to provide maximum "pull-out" resistance and "torque" strength during installation.
• Precision Threads: Clean, burr-free internal and external threads (BSP, BSPT, NPT) ensure a 100% drip-free connection with plumbing fixtures.

Product Range & Variations

We provide a diverse array of inserts to fit all standard CPVC pipe diameters:

• Brass CPVC Male Inserts: For connecting to female-threaded valves and pumps.
• Brass CPVC Female Inserts: The standard choice for taps, showers, and mixers.
• Hexagonal & Round Designs: Tailored for different molding pressures and plastic wall thicknesses.
• Custom Sizes: From 1/2" and 3/4" up to 2" and larger industrial sizes.

Precision-Engineered Support for Electronics & Mechanical Assemblies

Our Brass Spacers and Standoffs provide the essential structural support needed to separate, position, or ground components within an assembly. Widely used in the electronics, automotive, and telecommunications industries, these parts are machined to micron-level tolerances to ensure that your panels, circuit boards, and chassis remain perfectly aligned.

Because they are made from high-quality brass, our standoffs offer a unique combination of mechanical strength, easy machinability, and natural electrical conductivity, making them superior to plastic alternatives.

Comprehensive Product Range

We manufacture a wide variety of configurations to suit any mounting requirement:

• Male-Female Standoffs: Featuring an external thread on one end and an internal thread on the other for easy stacking.
• Female-Female Standoffs: Internal threading on both ends, ideal for mounting between two panels or boards.
• Plain Spacers (Unthreaded): Smooth internal bores for use with bolts or rivets where threading is not required.
• Hexagonal vs. Round: Hex bodies allow for easy tightening with a wrench, while round bodies provide a sleek, low-profile aesthetic.

Technical Specifications

• Body Shapes: Hexagonal (Standard), Round, or Square.
• Thread Sizes: M2, M2.5, M3, M4, M5, M6, M8 and equivalent imperial sizes (4-40, 6-32, 8-32).
• Length: From 3mm to 100mm+ (Custom lengths available upon request).
• Material: Free-Cutting Brass (IS 319 / BS 249 / CZ 121) or Lead-Free Brass.
• Plating: Natural Brass, Nickel, Tin, or Chrome for enhanced oxidation resistance.

Why Choose Our Brass Standoffs?

• Perfect Thread Depth: We ensure that internal threads are tapped to the correct depth and cleaned of all chips, preventing screw jams during assembly.
• Precision Facing: The ends of our spacers are machined perfectly flat and square, ensuring your PCBs don't tilt or warp when fastened.
• EMI/RFI Grounding: Unlike nylon spacers, our brass components provide a reliable electrical path for grounding sensitive electronic components to the chassis.
• High Torque Resistance: Our brass alloys are selected for their toughness, allowing for secure tightening without the risk of the threads stripping.

Applications

• PCB Mounting: Separating motherboards from metal enclosures.
• Industrial Controls: Mounting faceplates and display modules.
• Consumer Electronics: Used in laptops, servers, and gaming consoles.
• Automotive Dashboards: Providing rigid support for instrumentation clusters.