SEMS 1/4"-20 x 1 in Steel Zinc-Plated Hex Machine Screw with
The SEMS Screw: External Tooth is a machine screw with an external tooth lock washer, featuring a 1/4"-20 thread size, 1 in length, and a 3/8 in hex drive. Made of steel with a zinc-plated finish, this 25-pack (MPN…
SKU 3G-OTH-528609
Also listed as: HTCEIF02501000US025P · HTCEIF02501000US 025P
Local availability & support
- Delivery
- Worldwide DHL shipping from Singapore; 7–14 business days door-to-door for most destinations.
- Payment
- Invoicing in USD. Bank transfer (SWIFT) and corporate PO accepted.
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Product Description
The SEMS Screw: External Tooth is a machine screw with an external tooth lock washer, featuring a 1/4"-20 thread size, 1 in length, and a 3/8 in hex drive. Made of steel with a zinc-plated finish, this 25-pack (MPN HTCEIF02501000US-025P) provides a pre-assembled fastening solution for industrial applications.
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 industrial assemblies where vibration resistance is needed. The pre-assembled washer bites into the mating surface to prevent loosening, making it suitable for machinery, panels, and equipment across multiple industries.
What are the specifications of the SEMS screw 1/4"-20 x 1 in?
This SEMS screw has a 1/4"-20 thread size, 1 in length, and a 3/8 in hex drive. It is made of steel with a zinc-plated finish, supplied in a 25-pack (MPN HTCEIF02501000US-025P). The external tooth lock washer is pre-assembled for convenience.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws worldwide, handling full logistics and customs clearance for global delivery. As a sourcing partner across 14 industrial departments, we provide genuine fasteners like this 1/4"-20 x 1 in external tooth screw, ensuring you get the right part for your application.
How to select the correct SEMS screw size for an application?
To select the correct SEMS screw, match the thread size (e.g., 1/4"-20) and length (e.g., 1 in) to your mating hole depth and material thickness. Ensure the drive size (3/8 in hex) fits your tooling. The external tooth washer is ideal for softer materials where a biting lock is needed.
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.
