SEMS Screw: External Tooth, #4-40 Thread Size, 3/4 in Lg, Steel, Zinc-Plated
The SEMS Screw: External Tooth is a #4-40 thread size, 3/4 in length machine screw with an external tooth lock washer, made of steel with a zinc-plated finish, pan head, and Phillips drive (Drive Size #1). Supplied…
SKU 3G-OTH-528586
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Product Description
The SEMS Screw: External Tooth is a #4-40 thread size, 3/4 in length machine screw with an external tooth lock washer, made of steel with a zinc-plated finish, pan head, and Phillips drive (Drive Size #1). Supplied in a 100-piece pack (MPN MPPEI0-400750-100P), this OEM fastener is sourced and supported by 3G Electric across 14 industrial departments, with specialist depth in fastening and assembly solutions.
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 pre-assembled washer bites into the mating surface, making it ideal for industrial assembly, electrical enclosures, and machinery where a secure, permanent fastening is required.
What are the specifications of the SEMS screw #4-40 x 3/4 in?
This SEMS screw has a #4-40 thread size, 3/4 in length, steel construction with zinc-plated finish, pan head, and Phillips drive (Drive Size #1). It includes an external tooth lock washer and comes in a 100-piece pack (MPN MPPEI0-400750-100P).
Where to buy SEMS screws #4-40 x 3/4 in worldwide?
3G Electric supplies SEMS screws #4-40 x 3/4 in worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver this OEM fastener to your facility. Contact us for availability and lead time on this SEMS screw pack.
How to select the correct SEMS screw for an assembly?
To select the correct SEMS screw, match thread size (e.g., #4-40), length (e.g., 3/4 in), head style (pan), and drive type (Phillips #1) to your application. The external tooth lock washer provides vibration resistance. Confirm material compatibility—zinc-plated steel suits indoor use. 3G Electric can help source the right SEMS fastener.
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.
