SEMS Screw: External Tooth, 1/4"-20 Thread Size, 3/8 in Lg, Stainless Steel
The SEMS Screw: External Tooth (MPN 1-PPE-25C-37) is a stainless steel, passivated, pan-head machine screw with an integrated external tooth lock washer, featuring a 1/4"-20 thread size, 3/8 in length, and a #3 drive…
SKU 3G-OTH-528666
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Product Description
The SEMS Screw: External Tooth (MPN 1-PPE-25C-37) is a stainless steel, passivated, pan-head machine screw with an integrated external tooth lock washer, featuring a 1/4"-20 thread size, 3/8 in length, and a #3 drive size. 3G Electric sources this genuine OEM fastener across 14 industrial departments, with specialist expertise in combustion, pumps, and controls ensuring accurate fulfillment for demanding applications.
Frequently Asked Questions
What is a SEMS screw with external tooth lock washer used for?
A SEMS screw with an external tooth lock washer is used to fasten components in applications where vibration resistance is critical, such as industrial machinery, electrical enclosures, and automotive assemblies. The integrated washer prevents loosening under dynamic loads.
What are the specifications of the SEMS screw 1-PPE-25C-37?
The SEMS screw 1-PPE-25C-37 has a 1/4"-20 thread size, 3/8 in length, #3 drive size, and a stainless steel passivated pan head with an integrated external tooth lock washer. It is manufactured by SEMS and is suitable for demanding industrial environments.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws like the 1-PPE-25C-37 to customers worldwide. We handle full logistics, customs clearance, and delivery, sourcing genuine OEM fasteners across 14 industrial departments with specialist expertise in combustion, pumps, and controls.
How to select the correct SEMS screw for an application?
To select the correct SEMS screw, match thread size (e.g., 1/4"-20), length (e.g., 3/8 in), drive size (e.g., #3), and material (e.g., stainless steel passivated) to your assembly requirements. The integrated external tooth lock washer provides vibration resistance, ideal for machinery and panel applications.
SEMS Products
3G Electric supplies SEMS machine screws with external tooth lock washers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.









