Brass Inserts

Brass Inserts enable robust thread retention by providing high shear strength and excellent resistance to wear within softer substrates such as plastics and composites. The material’s ductility allows controlled deformation under load, which distributes stress evenly and reduces the risk of thread stripping or failure in dynamic or cyclical loading environments. 

Material Specification

C36000 (Free-Cutting Brass), C37700 (Forging Brass), C46400 (Naval Brass)

Dimensional Tolerances

OD – ±0.05 mm, Length – ±0.1 mm, Thread Pitch – ±0.02 mm

Thread Specification

Metric (M3-M12), UNC/UNF (e.g., 1/4″-20), Class 2G/3B (Internal/External)

Knurling Type & Depth

Diamond Knurl (0.3-0.5 mm depth), Straight Knurl (0.2-0.4 mm depth), 25-50 TPI

Surface Finish (Ra/RMS)

Machined Surfaces – 0.8-1.6 µm, Threads – 1.6-3.2 µm, Knurled – 3.2-6.3 µm

Product Description

Brass Inserts offer superior thermal conductivity compared to many alternative materials, facilitating efficient heat transfer away from critical joints. Their electrical conductivity supports stable grounding and current flow in assemblies where electrical continuity is required, preventing hot spots and electrical failures caused by poor contact. 

Length & Outer Diameter

OD – 5-50 mm (±0.05 mm), Length – 5-100 mm (±0.1 mm)

Hole/Bore Dimensions

Through Hole – +0.05/+0.1 mm, Blind Hole – ±0.05 mm, Counterbore – ±0.1 mm

Chamfer/Countersink

Entry Chamfer – 0.2-0.5 mm × 45°, Countersink – 82°-90° (±0.1 mm)

Burr-Free Requirement

Max Burr Height – ≤0.02 mm, Deburred Edges (Mechanical/Chemical)

Certification Standard

ASTM B16 (Free-Cutting Brass), ISO 9001, RoHS Compliance, ASME B1.1 (Thread Standards)

Technical Advantages

Brass Inserts exhibit inherent corrosion resistance due to their alloy composition, maintaining mechanical integrity even after prolonged exposure to moisture, salts, and mild chemicals. This property ensures long-term dimensional stability and thread performance in harsh environmental conditions without the need for additional coatings. 

Brass Inserts are manufactured to exacting tolerances with consistent thread geometry, ensuring uniform installation torque and predictable pull-out strength. This precision reduces variability during automated or manual assembly, improving process repeatability and reducing joint failure rates. 

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Industry Applications

Consumer Electronics

Used for secure mounting of circuit boards and connectors, ensuring electrical continuity and mechanical stability in compact devices. 

Medical Devices

Enable precise, sterile assembly in polymer housings, maintaining thread integrity under repeated sterilization and mechanical stresses. 

Aerospace Systems

Support lightweight composite assemblies with high strength-to-weight ratio threaded joints resistant to thermal cycling and mechanical fatigue. 

Industrial Machinery

Facilitate reliable fastening in polymer parts subjected to dynamic loads, chemical exposure, and mechanical wear during operation. 

Telecommunications Equipment

Provide corrosion-resistant, conductive fastening solutions in plastic enclosures and connectors exposed to environmental and electrical stresses. 

Marine Applications

Brass inserts resist saltwater corrosion and mechanical fatigue, maintaining secure threaded connections in polymer components on vessels. 

Substrate Compatibility and Material Integration

Brass Inserts integrate effectively with a broad range of thermoplastic matrices and composite materials, mitigating stress concentrations that typically cause substrate cracking. Their thermal expansion properties closely match many plastics, minimizing internal stresses and preserving joint integrity over temperature cycles. 

Brass Inserts undergo CNC machining processes to achieve precise dimensions and smooth surface finishes. These characteristics promote optimal thread engagement and reduce friction during insertion, which is critical in applications demanding tight tolerances and high reliability such as aerospace, medical devices, and electronics. 

 

Brass Inserts

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure the dimensional accuracy of Brass Inserts for critical applications?

Frigate uses CNC machining with strict process controls to maintain tight tolerances on insert dimensions. This precision guarantees consistent fit and function across batches. Dimensional accuracy is verified through advanced metrology equipment before delivery. This ensures reliable performance in high-precision assemblies. 

 

What materials and alloys does Frigate use for Brass Inserts to optimize corrosion resistance?

Frigate primarily uses C36000 free-machining brass alloy known for its balance of strength and corrosion resistance. The alloy’s composition forms a protective oxide layer under normal environmental exposure. For harsher conditions, Frigate offers custom alloy options to improve chemical resistance. This ensures longevity in demanding applications. 

How does Frigate control the thread quality in Brass Inserts to prevent stripping and wear?

Thread quality is maintained by precision thread rolling or cutting processes, depending on the insert type. Frigate monitors thread profile, pitch, and surface finish using optical and tactile inspection methods. This reduces the risk of stripping and improves wear resistance under cyclic loads. High thread quality enhances assembly reliability. 

What installation methods does Frigate recommend for Brass Inserts to maximize mechanical strength?

Frigate supports heat staking, ultrasonic insertion, and press-fit installation depending on the substrate and application. Each method is validated through mechanical testing to optimize pull-out strength and torque resistance. Proper installation reduces stress concentrations in the substrate. This leads to longer service life and fewer assembly failures. 

 

How does Frigate address thermal expansion mismatch between Brass Inserts and plastic substrates?

Frigate selects brass alloys with controlled thermal expansion properties aligned to common plastics. Design recommendations include adequate clearances and reinforcement ribs around the insert location. Testing under thermal cycling conditions verifies joint integrity. This approach prevents cracking or loosening due to thermal stress. 

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LOCATIONS

Global Sales Office

818, Preakness lane, Coppell, Texas, USA – 75019

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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Brass Inserts

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