SEMS Screw: External Tooth, #4-40 Thread Size, 1/4 in Lg, Stainless Steel, Passivated
The SEMS Screw: External Tooth is a #4-40 thread size, 1/4 in long, stainless steel, passivated, pan-head machine screw with an external tooth lock washer, supplied in a 50-piece pack (MPN 1-PPE-4C-25). It features a…
SKU 3G-OTH-528639
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Product Description
The SEMS Screw: External Tooth is a #4-40 thread size, 1/4 in long, stainless steel, passivated, pan-head machine screw with an external tooth lock washer, supplied in a 50-piece pack (MPN 1-PPE-4C-25). It features a #1 drive size. 3G Electric sources this genuine SEMS fastener as part of our industrial supply across 14 departments, with specialist expertise in combustion, pumps and controls.
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 machinery, electrical panels, and industrial equipment where vibration resistance is needed. The pre-assembled washer prevents loosening. 3G Electric supplies this genuine SEMS fastener across 14 industrial departments.
What are the specifications of the SEMS screw #4-40 1/4 in?
This SEMS screw has a #4-40 thread size, 1/4 in length, stainless steel construction with passivated finish, pan head, and a #1 drive size. It includes an external tooth lock washer and comes in a 50-piece pack (MPN 1-PPE-4C-25). 3G Electric sources this genuine SEMS fastener.
Where to buy SEMS screws #4-40 worldwide?
3G Electric supplies genuine SEMS screws #4-40 with external tooth lock washers worldwide. We handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this 50-piece pack (MPN 1-PPE-4C-25).
How to install a SEMS screw with external tooth lock washer?
Install a SEMS screw by driving it into a tapped hole or through a clearance hole with a nut using a #1 drive tool. The pre-assembled external tooth washer embeds into the mating surface to resist loosening. Tighten to the torque recommended for #4-40 stainless steel fasteners.
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.
