SEMS Screw: Internal Tooth, #4-40 Thread Size, 3/16 in Lg, Steel, Zinc-Plated
The SEMS Screw: Internal Tooth is a #4-40 thread size, 3/16 in long, steel, zinc-plated, pan-head, Phillips-drive machine screw with an internal tooth lock washer, supplied in a 50-piece pack (MPN MPPII0-400180-050P…
SKU 3G-OTH-532061
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Product Description
The SEMS Screw: Internal Tooth is a #4-40 thread size, 3/16 in long, steel, zinc-plated, pan-head, Phillips-drive machine screw with an internal tooth lock washer, supplied in a 50-piece pack (MPN MPPII0-400180-050P, Drive Size #1). 3G Electric sources this 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 internal tooth lock washer used for?
A SEMS screw with an internal tooth lock washer is used to fasten components in machinery, electrical panels, and industrial equipment where vibration resistance is critical. The pre-assembled washer prevents loosening, making it ideal for applications across 14 industrial departments, including combustion, pumps, and controls.
What are the specifications of the SEMS screw #4-40 x 3/16 in?
This SEMS screw has a #4-40 thread size, 3/16 in length, steel construction with zinc plating, a pan head, Phillips drive (size #1), and an internal tooth lock washer. It comes in a 50-piece pack (MPN MPPII0-400180-050P). 3G Electric supplies this OEM fastener globally.
Where to buy SEMS screws #4-40 worldwide?
3G Electric supplies SEMS screws #4-40 worldwide, handling full logistics and customs clearance as a global industrial solutions provider. We source this OEM fastener across 14 departments, with specialist expertise in combustion, pumps, and controls ensuring accurate fulfillment for demanding applications.
How to select the right SEMS screw for an application?
To select the right SEMS screw, match thread size (e.g., #4-40), length (e.g., 3/16 in), drive type (Phillips #1), and material (steel, zinc-plated) to your assembly requirements. The internal tooth lock washer provides vibration resistance. 3G Electric can help specify the correct fastener for your industrial application.
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.









