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Brass Insert

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The brass threaded insert is a mechanical threaded nut… that creates a secure join between objects without damaging them. It is also used to repair or re-establish the ridges of a stripped threaded hole… to make it capable of holding a fastener again. It is primarily suitable for softer materials such as plastic and wood.

We are the leading manufacturer of Brass threaded inserts for plastics Industries, Communication equipment, Automotive Industries, Electrical & Wiring Device Cases, etc. We offer a full line of brass inserts for all methods of installation, including ultrasonic, heat, thermal, press-in, and mold-in. Although we produce various brass inserts as per custom design & specification, we have standard series of Threaded Inserts such as Straight Hole, Blind (Closed Bottom), Collar Inserts, Ultrasonic, Press-in, Tri Slotted.

Why Brass Inserts?
  • Brass has a high thermal conductivity. Brass Inserts are easy to fit into plastic parts. Machining on brass is easy compared to stainless steel.

  • Stainless steel is a poor conductor of heat compared to brass. That elevates temperatures during machining operations and reduces the life of cutting tools.

  • Brass offers much bet  How are Brass Inserts Made?ter thermal conductivity compared to stainless steel or carbon steel. Brass conductivity is high compared to carbon steel and stainless steel. Brass allows more rapid heating and cooling during heat installation in thermoplastics, which improves cycle time.

  • Brass is the first preference for industrial and agricultural applications. Brass does not get affected by water or moisture, so it does not rust.

How are Brass Inserts Made?
  • Manufacturing Process for Brass Inserts.

  • Brass Extrusion — Forging* — Machining — Testing - Finishing — Packaging — Your Product is ready to deliver.

Different Types and Sizes
  • The brass threaded insert has an effective form of variety. However, sometimes it depends on the material and the installation process. By design, you can divide it into 4 types: flange-head, symmetrical, diamond knurl, and non-knurl symmetrical. And aiming the installation process… there are thermal/heat staking, molded-in, and manual press-in types available.

  • Brass insert size ranges from 1/8″ to 2″ in diameter to 1/8″ to 4″ in length. And the ISO standards thread size ranges from M2 to M20 (depending on the type). However, you can adjust the size ranges according to your requirements.

Structure Of A Brass Threaded Insert
  • The shape of a Brass threaded insert is usually like a barrel or long-rounded. Mostly it comes in a female manner, but the male structure is also available for some particular needs. 

  • It has two ends. One end with spread metal is the head or inlet section. This part always stays above and has a round or hexagonal shape. In addition, you will see different design patterns on the outside body. Some have diamond-shaped teethes, some have line patterns, and some come with normal threads or combinations. It depends on the manufacturer and the purpose of that insert. 

  • However, the inside of the inserts is mostly the same. You will always find the standard threads there for joining the fasteners. 

Why And Where To Use It
  • Equipment made of soft materials such as wood, plastic, plywood, clipboard, aluminum, etc… is likely to have a great chance of getting cracks or damage while fastening with other objects. The hard materials can easily withstand the insertion of a bolt or screw. But if the material is soft, there is a big reason to install a threaded fastener without damaging the material.

  • Moreover, the built-in threads of the softer materials cannot do their job correctly after rough use. This is because, after a while, the ridges of the thread get damaged.

  • For these particular situations, brass threaded inserts are the best choice. Using it will let you make the joints in the soft material objects efficiently with no cracks. Also, you can apply these to hard materials too. In addition, brass inserts are very durable to reuse from one joint to another. 

  • Now, if you come to use them, you can use them in any space, from hand-held devices to industrial applications. For example, smartphones, house equipment, thermoplastics, defense, transportation… medical, cabinetry, automotive, factory machines, etc. 

How To Install A Brass Insert
  • There are two general processes are available to install brass inserts which are thermal and manual press-in. The manual pressing method is suitable for wood, and the thermal is for plastics. Here are some short descriptions to implement both processes:

    1. Manual press-in 

      • To execute this process, you will need the object (wood, plywood, etc.), the brass insert, a drill machine… a screw nut (same diameter as the insert hole) and a spanner, or a drive tool (depending on the situation).

      • Firstly, mark on the wood surface where you want to install the insert. Then make a hole with the drill machine, maintaining the same diameter as the insert. Now, inject the nut into the insert hole from the inlet. After that, screw up the nut completely inside it so that the hex head of the nut will meet the insert head. 

      • Next, fill in the wood hole with the nut. That will make the insert touch the wood surface. Push it to go inside the hole but don’t do it forcefully. Further, screw up the nut with the spanner to dive the rest of the brass insert in. Finally, you can undo the nut spins and pull it back when it’s filled the wood hole. Therefore, the brass threaded insert is successfully installed.

      • However, this process is only for the two-sided crossed holes. But if you want to install it in a one-sided hole… you need to attach the insert to the drive tool and press it inside the hole.

    2. Thermal Method

      • You will require a soldering iron (approx 40 watts) to install the brass insert in plastics. 

      • Most of the time, the installation hole is already there in the plastic cases. All you need to do is, place the insert properly in the hole. Then plug in the soldering iron and hold and press the insert gently with it from above. The brass insert will absorb heat from the iron and melt the plastic a bit. After some time, the plastic will make way for the insert and let it in. Remove and unplug the soldering iron after the insert moves inside.

  • Diamond

  • Straight

  • Unidirectional

  • Free Cutting Brass IS 319 Type (I)

  • Free Cutting Brass as per BS 249 Type (I)

  • High-Grade Free Cutting Brass

  • Any type of Special Brass Material Composition as per the client’s need, requirement, and specification.

  • ISO Metric (MM Threads)

  • BA Threads

  • BSW Threads (Inches)

  • UNC, UNF Threads

  • Any threads as per custom design

Length / Size:
  • Begins from M2 or equivalent threads and up to any size as per clients' design or requirement.

Finish And Coating:
  • Natural, Nickel Plated, and Tin Plated or any coating as per the client’s specification.

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