Threaded Inserts For Injection Molding

Bulk Threaded Inserts For Injection Molding provided by Honmor refer to metal fasteners (embedded during plastic injection molding) designed to enhance thread connection strength of plastic parts—solving the problem of plastic thread wear or stripping under repeated assembly. Honmor specializes in manufacturing high-quality threaded inserts using brass (H62), stainless steel (304/316L), and aluminum alloy (6061-T6) as base materials, processed via precision CNC turning (spindle speed up to 15,000 rpm) to control outer diameter tolerance within ±0.01mm and thread accuracy up to ISO 4H/5g. When customers customize or order these inserts, Honmor can adjust specifications (thread size M2-M12, length 3-20mm) and surface treatments (knurling, zinc plating, passivation)—for example, providing knurled brass inserts for PP plastic parts (enhancing embedding firmness) or stainless steel inserts for humid-environment plastic parts. These inserts ensure reliable connection between plastic components and external parts (e.g., screws), making them a key choice for customers who purchase plastic assembly solutions.

Core Characteristics

Strong connection reliability: Honmor’s Threaded Inserts use knurled/serrated outer surfaces to increase friction with plastic; after injection, the pull-out force reaches ≥500N (for M5 brass inserts in ABS plastic)—avoiding thread failure during use, which is why manufacturers choose to order from Honmor.

Wide material compatibility: Supports matching with common injection plastics (ABS, PC, PP, PET); Honmor provides material selection guidance when customers customize—e.g., recommending aluminum inserts for lightweight plastic parts (reducing overall weight) or 316L stainless steel inserts for medical-grade plastic parts (meeting corrosion resistance needs).

Wide adaptability of injection process, insert design can avoid plastic flow blocking during injection. Honmor provides embedding position drawings to assist customers optimize mold design in order to assure smooth integration with injection molding with no need of secondary processing.

Technical Parameter Table

Common Application Fields

Applied in plastic assembly industries (excluding aerospace, avoiding repeated scenarios):

Furniture industry: Brass threaded inserts for plastic furniture parts (e.g., PP plastic chair armrest connectors, ABS plastic cabinet hinge bases); Honmor’s inserts ensure stable assembly of furniture components, withstanding long-term use without thread loosening.

Industrial equipment industry: Stainless steel 304 inserts for plastic parts of industrial control panels (e.g., PC plastic instrument shell fixing points, PET plastic machine guard connection holes); resistance to oil and dust makes industrial equipment manufacturers often order them.

Smart home sector, the threaded inserts for injection molding are adopted for knurled aluminum inserts for plastic of smart device. Besides, its feature of lightweight design match smart home products design perfectly.

In medical devices industry, inserting parts of stainless steel 316L are used for non-implantable medical plastic parts, which comply with FDA standards supports clinical use, thus, many of medical devices manufacturer would like to customize these components from Honmor.