SEMS Screw: Internal Tooth, 1/4"-20 Thread Size, 3/4 in Lg, Stainless Steel
The SEMS Screw: Internal Tooth (MPN 1-PPI-25C-75) is a stainless steel, passivated, pan-head machine screw with a pre-assembled internal tooth lock washer, featuring a 1/4"-20 thread size, 3/4 in length, and a #3…
SKU 3G-OTH-532119
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Product Description
The SEMS Screw: Internal Tooth (MPN 1-PPI-25C-75) is a stainless steel, passivated, pan-head machine screw with a pre-assembled internal tooth lock washer, featuring a 1/4"-20 thread size, 3/4 in length, and a #3 drive size. This integrated fastener is designed to simplify assembly and provide vibration resistance in industrial applications.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
Frequently Asked Questions
What is a SEMS screw with internal tooth lock washer used for?
A SEMS screw with an internal tooth lock washer is used to fasten components in industrial assemblies where vibration resistance is critical. The pre-assembled washer bites into the mating surface to prevent loosening, simplifying installation in machinery, panels, and equipment across sectors like machining and material handling.
What are the specifications of the SEMS screw 1-PPI-25C-75?
The SEMS screw 1-PPI-25C-75 has a 1/4"-20 thread size, 3/4 in length, #3 drive size, and a stainless steel, passivated, pan-head design with an integrated internal tooth lock washer. It is manufactured by SEMS and is suitable for applications requiring corrosion resistance and secure fastening.
Where to buy SEMS screws with internal tooth lock washers worldwide?
3G Electric supplies SEMS screws with internal tooth lock washers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine fasteners like the 1-PPI-25C-75 to your facility. Contact us for pricing and lead time on your order.
How to select the right SEMS screw for an assembly?
To select the right SEMS screw, match the thread size (e.g., 1/4"-20), length (e.g., 3/4 in), and drive size (e.g., #3) to your application's requirements. Consider material—stainless steel passivated for corrosion resistance—and the pre-assembled lock washer for vibration-prone environments. Consult 3G Electric for guidance.
SEMS Products
3G Electric supplies SEMS machine screws with internal tooth lock washers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









