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Pull ring type knob plunger
Simple shape that does not require much space.· Only for use in situations that do not require a high degree of precision.· Operating temperature range: from -30 to +80°C, and up to +250°C on types with rings.
Introducing our high-quality Indexing Plungers, designed to provide superior locking capabilities for your machine and fixture applications. Made with the finest materials and expert craftsmanship, our indexing plungers are the perfect solution for securely locking items in place, especially when indexing a range of motion.
Our indexing plungers are engineered to offer maximum precision and durability, ensuring they can withstand even the toughest industrial environments. With their simple yet effective design, our indexing plungers are easy to use and can be adjusted quickly and easily to suit your specific needs.
Whether you're using our indexing plungers to secure equipment on a production line or hold components in place during assembly, you can count on their reliable performance to get the job done right. So why wait? Order your indexing plungers today and experience the difference that high-quality engineering can make!


Dongguan Zhengchen Hardware Co., Ltd.
Main categories: Spring Plunger, Indexing Plunger, FA Automation Part



1.How long is your delivery time?
Generally our delivery time is 15 to 30 days . But different products and quantities have different procedures andtiming.we promise that we'll try our best to finish your orders within the shortest time.For more information, pleasecontact us.
2.ls the MOQ fixed?
For most orders,the MOQ can't be lowered according to the required quantities.For stock items,the quantities canbe negotiated.
3.What is the Surface Treatment?
Galvanized, Yellow zinc plated,H DG.
4.What is your material?
stainless steel and carbon steel .It also can according to your requirements.
5.Where is the port of shipment?
FOB:Shenzhen or HongKong.
6.What are your terms of payment?
PAYMENT BY T/T IN ADVANCE , West union,Paypal and etc.
7.Are customized products accepted?
You idea and imagine,we design and make.lt is fully self-customized.
8.Any discount possible if l place an order?
Yes,we have different price ranges (discounts)according to your quantities.You can consult us anytime.
9.Shipping
For samples or small order, can be delivered by express of DHL, UPS, FedEx,TNT, HKDC at the buyerconvenience, or by other express to save the buyer cost or shorten the transit time at the buyer request.& For mass order delivery, can be optional with terms of Ex-work, FOB by air or by sea based on the buyerforwarder or our recommended local forwarder at the buyer convenience.
To save the buyer shipping cost, we can also offer Chinese cheap cost from our local fonwarder for our buyer moreselections.
Introducing our high-quality indexing plungers designed to meet the demanding needs of machine and fixture applications. These versatile locking devices are perfect for securing items in place, especially when indexing a range of motion.
Our indexing plungers are crafted from high-grade materials, ensuring superior durability and longevity. They are designed to withstand the rigors of heavy-duty use and are built to last. These top-quality indexing plungers are easy to install and use, making them a popular choice among professionals and hobbyists alike.
Whether you're working on a project that requires precise indexing or need a reliable locking mechanism, our indexing plungers are the perfect solution. They are available in a range of styles and sizes to suit your specific needs. Plus, our expert team is always on hand to offer advice and support, ensuring you get the right product for your requirements.
Choose our indexing plungers for unparalleled performance and reliability. You won't be disappointed!
TIME/VENUE:2026.3.31-4.3 Shenzhen International Conventionand Exhibition Center (Bao'an)BOOTH NO.3-P10
Indexing plungers are vital mechanical components used to secure, position, and lock movable parts in machinery, fixtures, jigs, and industrial equipment.
In precision machinery and industrial applications, choosing the right mechanical locking or positioning component is critical for reliability, safety, and efficiency. Two common devices used for positioning and locking are indexing plungers and ball lock pins.
Custom indexing plungers are essential components in specialized machinery, industrial equipment, and precision assemblies.
Indexing plungers are essential mechanical components used across various industries to ensure precise positioning, secure locking, and repeatable alignment in machinery, fixtures, jigs, and other adjustable assemblies.
Indexing plungers are essential components in mechanical assemblies, offering precise positioning, locking, and alignment capabilities. They are widely used in machinery, jigs, fixtures, and industrial equipment, where accurate positioning and repeatable movement are critical.
If an indexing plunger starts sticking, failing to seat, or wearing out early, replacing it might "solve" the symptom—but not the cause. Most field issues come from receiving-hole design, alignment stack-up, contamination, or side loading.
In harsh environments, "indexing plunger" is not the full spec. The real spec is: corrosion risk + cleaning method + contamination tolerance + maintenance reality. If you don't design around those, even a premium plunger will feel gritty, stick, or corrode before its expected service life.
"Load rating" sounds simple until a pin bends in the field and everyone asks why. Indexing plunger pins rarely fail from pure axial force. They fail because real assemblies introduce shear, bending, misalignment, and vibration—often all at once.
A standard indexing plunger is designed to re-engage automatically. That's great—until it isn't. In fast changeovers, rotating plates, or safety-critical adjustments, you may need the opposite behavior: the pin must stay retracted until the operator intentionally releases it.
When an indexing plunger "doesn't feel reliable," the issue is often not the plunger. It's the hole. Bore size, chamfer, and engagement depth decide whether the pin finds the target smoothly—or fights burrs, edge damage, and misalignment for the rest of its life.
Did you know that using the wrong set screw can cause permanent damage to delicate components? Whether you're working with polished aluminum, plastic housings, or precision assemblies, a traditional metal set screw might scratch, deform, or even crack your components.
What do medical devices, precision electronics, and high-end furniture have in common? They all require non-marring, precision fastening solutions—and nylon tip set screws are the go-to choice.Standard fasteners often cause more harm than good in delicate assemblies.
Did you know that a single fastener can determine whether your assembly lasts for years or fails within weeks? It's not always about the size or strength of the screw—it's about the application fit. In industries where surface integrity, vibration control, and precision are essential, the nylon tip set screw is often the unsung hero.
"One wrong screw can ruin your entire assembly." That's not an exaggeration—it's a reality many engineers and manufacturers face when choosing between different types of fasteners. Imagine tightening a set screw into a soft aluminum or plastic surface, only to find cracks, scratches, or permanent damage.
In many industries, fastening delicate components without causing surface damage is a constant challenge. That's where nylon tip set screws come in — a smart and reliable solution for non-marring, vibration-resistant fastening.
When you use a sliding door or open a drawer, you can feel the smooth stop and click. This comes from the ball head plunger and spring plunger inside. A high-quality ball head plunger uses strong materials like 304 stainless steel. This gives you better durability and protects against rust.
You use a plastic ball plunger to move parts gently. Material is important. POM and PA work for everyday jobs. PEEK is better for hot or tough places. Ball plungers keep electronics and molds safe. They protect soft surfaces.
Hygiene is very important in food processing. Every part, even a stainless steel ball plunger, must meet hygiene rules. Clean machines help keep food safe for people. Picking parts that resist germs and rust means you can trust your equipment for years.
You use spring ball plunger technology to get steady preload and close tolerances in your automation equipment. Spring-loaded plungers help you get exact positioning. This makes design and performance better.