Brass Moulding Insert

Q: How do you prevent plastic resin from entering the internal threads during injection?

We manufacture blind-ended inserts or closed-bottom inserts with precision-ground pilot chamfers that form a tight seal against the mold core pin, completely stopping plastic flashing from entering threads.

Q: Which knurling pattern provides the highest torque resistance in moulded plastics?

Opposing helical knurls and diamond knurling with undercut annular grooves offer the optimal combination of rotational torque retention and tensile pull-out strength in both thermoplastics and filled engineering resins.

Brass Moulding Insert Supplier & Manufacturer

We are the leading Brass Moulding Insert manufacturer in Jamnagar, Gujarat. Backed by over 25+ years of dedicated manufacturing experience (established in 1999), we deliver complete, high-precision insert solutions for injection moulding, rotational casting, and compression moulding at competitive factory-direct pricing.

They are available in different sizes like ½, ¾, 1, 1¼, 1½, and 2 inches. These molding inserts are easily available in round and hexagonal shape and is manufactured using the premium quality raw materials which ultimately provide them the superior quality. The entire range provided by our company is ISO 9001:2015 certified.

Features of Brass Moulding Insert

The features of the Brass Moulding Inserts are stated below:

Superior quality
Available in different sizes
Have accurate dimension
Stronger in nature
Easy customization
Smooth exterior surface finish
Available at a user friendly price

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Brass Moulding Insert Range

Technical Specifications of Brass Moulding Inserts

Designed for injection molding, compression molding, rotational molding, and ultrasonic thermal insertion into thermoplastics and thermosets:

Parameter	Standard Specification	Custom Options Available
Thread Size	Metric M2, M2.5, M3, M4, M5, M6, M8, M10, M12, M16	Imperial UNC / UNF (#2-56 to 1/2"-13), BSW threads
Insert Geometries	Round Knurled, Hexagonal Headed, Blind End, Through-Hole, Symmetrical	Stepped pilot guides, flanged heads, opposing helical patterns
Material Grades	CW614N (CuZn39Pb3), C36000 Free-Machining Brass, CW617N, C37700	RoHS compliant lead-free brass (CuZn42 / C27450), Aluminum, Stainless
Knurling Styles	Opposed Helical Knurls, Diamond Knurls, Straight Knurl with Undercuts	Custom knurl pitch for filled glass nylon (PA66-GF30) & PEEK
Dimensional Tolerances	OD & Length: ±0.02 mm; Thread tolerance: ISO 6H / 2B	Ultra-tight CNC micro-tolerances ±0.01 mm
Pull-out & Torque	Engineered undercut grooves resist high axial extraction and rotational torque	Tested to ASTM D953 pull-out and torsional failure standards

Have Custom Brass Moulding Insert Drawings?

Submit your 2D PDF or 3D STEP/IGES CAD drawings for rapid DFM analysis, tolerance feasibility, and factory quotation within 24 hours.

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Got Questions?

Frequently Asked Questions – Brass Moulding Inserts

1 What is the difference between Mold-In Inserts and Post-Mold Thermal Inserts?

Mold-in inserts are placed directly onto the mold core pins before plastic injection, allowing melted resin to fully encapsulate deep undercuts for maximum pull-out strength. Post-mold inserts are pressed into molded holes using heat or ultrasonic vibration, shortening mold cycle times.

2 How do you prevent plastic resin from entering the internal threads during injection?

3 Which knurling pattern provides the highest torque resistance in moulded plastics?