SEMS Screw: Internal Tooth, #4-40 Thread Size, 7/8 in Lg, Stainless Steel, Passivated
The SEMS Screw: Internal Tooth (SKU 849AY6, MPN 1-PPI-4C-87) is a #4-40 thread size, 7/8 in length, stainless steel, passivated, pan-head machine screw with an internal tooth lock washer, supplied in a 25-pack. It…
SKU 3G-OTH-532147
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Product Description
The SEMS Screw: Internal Tooth (SKU 849AY6, MPN 1-PPI-4C-87) is a #4-40 thread size, 7/8 in length, stainless steel, passivated, pan-head machine screw with an internal tooth lock washer, supplied in a 25-pack. It features a #1 drive size.
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 where vibration resistance is needed. The pre-assembled washer digs into the mating surface to prevent loosening. Common in electronics, automotive, and machinery assemblies requiring a compact, reliable fastening solution.
What are the specifications of the SEMS screw #4-40 7/8 in?
This SEMS screw has a #4-40 thread size, 7/8 in length, stainless steel construction with passivated finish, and a pan head. Drive size is #1. It includes an internal tooth lock washer and comes in a 25-pack. The manufacturer part number is 1-PPI-4C-87.
Where to buy SEMS screws #4-40 worldwide?
3G Electric supplies SEMS screws #4-40 with internal tooth lock washers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver to your location. Contact us for pricing and lead time on this and other fasteners across 14 industrial departments.
How to select the correct SEMS screw for an application?
Select a SEMS screw by matching thread size, length, head style, and material to your assembly requirements. For vibration-prone environments, the internal tooth lock washer provides resistance. Ensure drive size matches your tool. Stainless steel with passivated finish offers corrosion resistance for outdoor or washdown applications.
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.
