High-Precision Multi-Section Brass Insert Nut with Diagonal Knurling

Product Specifications

Material	Brass
Surface Treatment	Cleaning
Outer Diameter	6.0 mm
Total Length	10.5 mm
Thread	M4
Process	CNC turning
Knurl Type	Multi-section diagonal 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 diagonal knurling: Several knurled bands along the body increase the contact area with the plastic and engage the material in both rotational and axial directions.
• 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.
• Brass construction: Brass offers thermal conductivity and corrosion resistance in typical indoor environments, and is compatible with common molding and heat-staking processes.
• Cleaned surface: The cleaning treatment removes machining residue and prepares the surface for consistent insertion behavior.
• M4 internal thread: Suits fasteners used in medium-size housings and structural plastic parts.
• Extended length: The 10.5 mm total length suits deeper bosses and provides a longer thread engagement depth.

Product Features

• Multi-section diagonal knurling along a cylindrical body.
• Straight cylindrical profile for molded holes with a straight bore.
• Machined brass body with consistent dimensional tolerance.
• Internal M4 metric thread produced to standard pitch.
• Outer diameter of 6.0 mm and total length of 10.5 mm.
• Surface cleaning treatment for removal of cutting fluid and fine particles.
• 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
• Power tool and equipment housings
• Telecommunications equipment
• Prototype and low-volume molded assemblies
• Thermoplastic parts requiring repeated fastening and disassembly

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: Can the outer diameter, length, or thread be customized?

A: Yes. Outer diameter, total length, thread size, knurl pattern, and knurl section layout can be produced to customer drawings or samples.

Q4: What information is needed for a custom quote?

A: Please provide outer diameter, total length, thread size, knurl type, section layout, material, 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.
• Store in a dry environment to limit surface oxidation.
• Verify thread compatibility with the mating screw before assembly.
• For high-torque applications, test the insert in the actual plastic to confirm performance.

Customization and Ordering

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

Details