SEMS Screw: Internal Tooth, #4-40 Thread Size, 5/8 in Lg, Stainless Steel, Passivated
The SEMS Screw: Internal Tooth (#4-40 Thread Size, 5/8 in Lg, Stainless Steel, Passivated, Pan, 50 PK, MPN 1-PPI-4C-62) is a machine screw with an integrated internal tooth lock washer, featuring a #1 drive size. 3G…
SKU 3G-OTH-532065
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Product Description
The SEMS Screw: Internal Tooth (#4-40 Thread Size, 5/8 in Lg, Stainless Steel, Passivated, Pan, 50 PK, MPN 1-PPI-4C-62) is a machine screw with an integrated internal tooth lock washer, featuring a #1 drive size. 3G Electric interprets demand and delivers this genuine industrial fastener across 14 departments, with specialist depth in combustion, pumps and controls as an authorised distributor.
Supplied to the Philippines — compatible with 60 Hz installations. DHL Express delivery to Manila, Quezon City, Cebu, customs and duties handled door-to-door.
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 integrated washer bites into the mating surface, making it ideal for electrical panels, machinery assemblies, and industrial equipment where a secure, permanent hold is required.
What are the specifications of the SEMS screw #4-40 thread size?
This SEMS screw has a #4-40 thread size, 5/8 in length, stainless steel construction, passivated finish, pan head, and a #1 drive size. It comes in a 50-piece pack (MPN 1-PPI-4C-62). The integrated internal tooth lock washer prevents loosening under vibration.
Where to buy SEMS screws with internal tooth lock washer worldwide?
3G Electric supplies and delivers SEMS screws with internal tooth lock washer worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to ensure your fasteners arrive on site. Contact us for availability and lead time on this genuine SEMS part.
How to install a SEMS screw with internal tooth lock washer?
Install a SEMS screw by driving it into a pre-tapped hole or nut using a #1 drive tool. The integrated internal tooth washer should contact the mating surface; tighten to the recommended torque for #4-40 stainless steel fasteners. Avoid over-torquing to prevent stripping the threads.
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.









