SEMS 1/4"-20 x 7/8" Stainless Steel Pan Head Machine Screw with
The SEMS Screw: External Tooth (MPN 1-PPE-25C-87) is a stainless steel, passivated, pan-head machine screw with an integrated external tooth lock washer, featuring a 1/4"-20 thread size, 7/8 in length, and a #3 drive…
SKU 3G-OTH-528645
Also listed as: 1PPE25C87 · 1 PPE 25C 87
Local availability & support — Singapore
- Local office
- 20 Woodlands Link #09-05, Singapore 738733
- Phone
- +65 8878 8355
- Delivery
- Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
- Payment
- Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
- Ships to
- Singapore
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Product Description
The SEMS Screw: External Tooth (MPN 1-PPE-25C-87) is a stainless steel, passivated, pan-head machine screw with an integrated external tooth lock washer, featuring a 1/4"-20 thread size, 7/8 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 specification and supply.
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 while resisting loosening from vibration. The integrated washer bites into the mating surface, making it ideal for industrial assemblies in machinery, electrical panels, and material handling equipment where a secure, permanent fastening is required.
What are the specifications of the SEMS screw 1-PPE-25C-87?
The SEMS screw 1-PPE-25C-87 has a 1/4"-20 thread size, 7/8 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 designed for reliable fastening in demanding industrial environments.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws like the 1-PPE-25C-87 to customers worldwide. We handle full logistics, customs clearance, and delivery to your site. As a global industrial solutions provider, we source genuine OEM fasteners across 14 departments, ensuring you get the correct part for your application.
How to select the correct SEMS screw for an assembly?
To select the correct SEMS screw, match the thread size (e.g., 1/4"-20), length (e.g., 7/8 in), drive size (e.g., #3), and material (e.g., stainless steel) to your assembly requirements. The integrated external tooth lock washer eliminates the need for a separate washer, simplifying installation and ensuring vibration resistance.
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.
