Multi-Section Knurled Stainless Steel Embedded Nut, Injection-Molded Threaded Insert

Product Specifications

Material	Stainless Steel
Surface Treatment	Natural finish
Outer Diameter	8 mm
Total Length	12 mm
Thread	M6
Process	CNC turning
Knurl Type	Multi-section knurling along a cylindrical body
Price	Please contact us for current pricing.
Customization	Non-standard outer diameter, length, thread size, knurl pattern, and section layout are available upon request.

Core Advantages

• Multi-section knurling: Several knurled bands along the body increase the contact area with the plastic and provide multiple engagement zones within the thermoplastic.
• Anti-pull-out geometry: The knurled sections create mechanical interlock with the plastic after molding or heat staking.
• Cylindrical body: The straight profile fits molded holes with a straight bore and supports uniform plastic flow around the insert.
• CNC turning: The machining process holds consistent dimensional tolerance on outer diameter, length, and thread.
• Stainless steel construction: Stainless steel offers corrosion resistance and mechanical strength for applications subject to load and moisture exposure.
• Natural finish: The untreated surface suits applications where no additional coating is required and the base material properties are used directly.
• M6 internal thread: Suits fasteners used in medium and larger housings and structural plastic parts.
• Extended length: The 12 mm total length suits deeper bosses and provides a longer thread engagement depth.

Product Features

• Multi-section knurling along a cylindrical body.
• Straight cylindrical profile for molded holes with a straight bore.
• Machined stainless steel body with consistent dimensional tolerance.
• Internal M6 metric thread produced to standard pitch.
• Outer diameter of 8 mm and total length of 12 mm.
• Natural finish without additional surface treatment.
• Suitable for insert molding, heat staking, ultrasonic insertion, and press-fit.
• Can be produced to customer drawings for non-standard dimensions and knurl section layout.

Applications

• Consumer electronics housings and enclosures
• Home appliance plastic components
• Automotive interior plastic components
• Industrial control panels and instrument casings
• Medical device plastic housings
• Telecommunications equipment
• Prototype and low-volume molded assemblies
• Thermoplastic parts requiring corrosion resistance and repeated fastening

FAQ and Solutions

Q1: What is the purpose of the multi-section knurling?
A: Multiple knurled bands along the body provide several engagement zones within the plastic. This can improve torque and pull-out resistance compared with a single knurled section, particularly in deeper bosses.

Q2: How is this insert installed?
A: It can be installed by insert molding, heat staking, ultrasonic insertion, or press-fit, depending on the plastic type and wall thickness. Heat staking is commonly used for thermoplastics because the melted plastic flows into the knurl and resets around it.

Q3: Why is stainless steel used for this insert?
A: Stainless steel offers corrosion resistance and mechanical strength. It suits applications where the insert is exposed to moisture or requires higher load capacity than brass in the same size.

Q4: What information is needed for a custom quote?
A: Please provide outer diameter, total length, thread size, knurl type, section layout, material grade, surface treatment, quantity, and any drawing or tolerance requirements.

Precautions

• Confirm the molded hole diameter and boss wall thickness before installation.
• Use installation parameters recommended for the specific plastic material.
• Avoid excessive heat during heat staking, which can deform the surrounding plastic.
• Verify thread compatibility with the mating screw before assembly.
• For high-torque applications, test the insert in the actual plastic to confirm performance.
• For applications with specific corrosion requirements, confirm the material grade and operating conditions with us.

Customization and Ordering

Non-standard embedded nuts can be produced according to customer drawings or samples. Customization options include outer diameter, length, thread size, knurl type, knurl section layout, material grade, surface treatment, and chamfer. Please contact us with your specifications and application details for a quotation.

Details