SEMS #4-40 x 1/4 in Stainless Steel Pan Head Machine Screw with
The SEMS Screw: Internal Tooth is a #4-40 thread size, 1/4 in long, stainless steel, passivated, pan head machine screw with an internal tooth lock washer, supplied in a 50-pack (MPN 1-PPI-4C-25). It features a #1…
SKU 3G-OTH-532063
Also listed as: 1PPI4C25 · 1 PPI 4C 25
Local availability & support — the Philippines
- Delivery
- 5–8 business days door-to-door; Bureau of Customs clearance typically 2–4 business days.
- Payment
- Invoicing in PHP or USD. Bank transfer and corporate PO accepted.
- Ships to
- Manila, Quezon City, Cebu, Davao, Batangas
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Product Description
The SEMS Screw: Internal Tooth is a #4-40 thread size, 1/4 in long, stainless steel, passivated, pan head machine screw with an internal tooth lock washer, supplied in a 50-pack (MPN 1-PPI-4C-25). It features a #1 drive size.
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 in applications where vibration resistance is needed. The pre-assembled washer bites into the mating surface to prevent loosening. Common in machinery, electrical enclosures, and panel assembly across industrial sectors.
What are the specifications of the SEMS screw #4-40 thread size?
This SEMS screw has a #4-40 thread size, 1/4 in length, stainless steel construction with passivated finish, pan head, and a #1 drive size. It includes an internal tooth lock washer and comes in a 50-pack with MPN 1-PPI-4C-25. The passivated surface offers corrosion resistance.
Where to buy SEMS screws with internal tooth lock washer worldwide?
3G Electric supplies SEMS screws with internal tooth lock washer worldwide. As a global industrial solutions provider, we handle logistics, customs, and delivery to your location. Contact us to order the #4-40 thread size, 1/4 in length, stainless steel passivated pan head screw in 50-pack quantities.
How to select the right SEMS screw for an application?
Select a SEMS screw by matching thread size, length, head type, and material to your assembly requirements. For vibration-prone environments, the internal tooth lock washer provides grip. Ensure drive size matches your tool. Stainless steel passivated finish suits corrosive or clean environments. Verify torque specs per manufacturer guidelines.
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.
