SEMS Screw: Internal Tooth, #4-40 Thread Size, 3/8 in Lg, Steel, Zinc-Plated
The SEMS Screw: Internal Tooth is a #4-40 thread size, 3/8 in length machine screw with an internal tooth lock washer, made of steel with zinc plating and a pan, Phillips head. Supplied in a 100-pack with a #1 drive…
SKU 3G-OTH-532133
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Product Description
The SEMS Screw: Internal Tooth is a #4-40 thread size, 3/8 in length machine screw with an internal tooth lock washer, made of steel with zinc plating and a pan, Phillips head. Supplied in a 100-pack with a #1 drive size (MPN MPPII0-400370-100P), this OEM part is a standard fastener for industrial assembly. 3G Electric sources and supplies this item across 14 industrial departments, with specialist expertise in fasteners and controls to ensure accurate fulfillment.
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 in industrial assembly to fasten components while resisting loosening from vibration. The pre-assembled washer bites into the mating surface, making it ideal for applications in machinery, electrical panels, and equipment where a secure, permanent fastening is required.
What are the specifications of the SEMS screw #4-40 x 3/8 in?
This SEMS screw has a #4-40 thread size, 3/8 in length, steel construction with zinc plating, a pan Phillips head, and a #1 drive size. It includes an internal tooth lock washer and comes in a 100-pack (MPN MPPII0-400370-100P). These specs match OEM standards for reliable industrial fastening.
Where to buy SEMS screws #4-40 x 3/8 in worldwide?
3G Electric supplies SEMS screws #4-40 x 3/8 in worldwide, handling full logistics and customs clearance as a global industrial sourcing partner. We source this OEM fastener across 14 industrial departments, ensuring accurate fulfillment for your assembly needs. Contact us for availability and delivery to your location.
How to install a SEMS screw with internal tooth lock washer?
Install a SEMS screw by driving it with a #1 Phillips bit into a pre-tapped or threaded hole. The internal tooth washer is pre-assembled under the head; as you tighten, the teeth bite into the surface to prevent loosening. Use standard torque values for #4-40 steel fasteners to avoid stripping.
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.
