SEMS Screw: Internal Tooth, #4-40 Thread Size, 1/4 in Lg, Steel, Zinc-Plated
The SEMS Screw: Internal Tooth is a #4-40 thread size, 1/4 in length, steel, zinc-plated, pan, Phillips machine screw with an internal tooth lock washer, supplied in a 100-piece pack (MPN MPPII0-400250-100P). It…
SKU 3G-OTH-532062
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Product Description
The SEMS Screw: Internal Tooth is a #4-40 thread size, 1/4 in length, steel, zinc-plated, pan, Phillips machine screw with an internal tooth lock washer, supplied in a 100-piece pack (MPN MPPII0-400250-100P). It features a #1 drive size. 3G Electric interprets customer demand and delivers this genuine industrial fastener across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
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 while resisting loosening from vibration. The pre-assembled washer bites into the mating surface, making it ideal for electrical panels, machinery enclosures, and automotive assemblies where a secure, permanent joint is required.
What are the specifications of the SEMS screw #4-40 x 1/4 in?
This SEMS screw has a #4-40 thread size, 1/4 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-piece pack (MPN MPPII0-400250-100P).
Where to buy SEMS screws #4-40 x 1/4 in worldwide?
3G Electric supplies SEMS screws #4-40 x 1/4 in worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine fasteners to your facility. Contact us for availability and lead time on this 100-piece pack.
How to select the correct SEMS screw for an application?
To select the correct SEMS screw, match thread size (#4-40), length (1/4 in), and head type (pan Phillips) to your assembly. The internal tooth lock washer suits applications needing vibration resistance. Verify drive size (#1) fits your tooling. 3G Electric can help interpret your requirements and source the right fastener.
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.
