SEMS Screw: Internal Tooth, 1/4"-20 Thread Size, 5/8 in Lg, Stainless Steel
The SEMS Screw: Internal Tooth (MPN 1-PPI-25C-62) is a stainless steel, passivated, pan-head machine screw with a pre-assembled internal tooth lock washer, featuring a 1/4"-20 thread size, 5/8 in length, and a #3…
SKU 3G-OTH-532118
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Product Description
The SEMS Screw: Internal Tooth (MPN 1-PPI-25C-62) is a stainless steel, passivated, pan-head machine screw with a pre-assembled internal tooth lock washer, featuring a 1/4"-20 thread size, 5/8 in length, and a #3 drive size. 3G Electric sources this genuine OEM fastener across 14 industrial departments, with specialist expertise in combustion, pumps, and controls ensuring accurate specification and supply.
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 industrial assemblies in machinery, electrical panels, and combustion systems where a secure, permanent hold is required.
What are the specifications of the SEMS screw 1-PPI-25C-62?
The SEMS screw 1-PPI-25C-62 has a 1/4"-20 thread size, 5/8 in length, #3 drive size, and a stainless steel, passivated, pan head with an internal tooth lock washer. It is a genuine SEMS fastener, sourced by 3G Electric for industrial applications across 14 departments.
Where to buy SEMS screws in worldwide?
3G Electric supplies SEMS screws worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine fasteners like the 1-PPI-25C-62 across 14 departments, with specialist expertise in combustion, pumps, and controls to ensure accurate specification and delivery.
How to select the correct SEMS screw for an application?
To select the correct SEMS screw, match thread size, length, drive size, and material to your assembly requirements. For the 1-PPI-25C-62, use a 1/4"-20 thread, 5/8 in length, and #3 drive. 3G Electric can help verify specifications for your industrial application, including vibration resistance needs.
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.









