SEMS Screw: Internal Tooth, #4-40 Thread Size, 5/16 in Lg, Stainless Steel, Passivated
The SEMS Screw: Internal Tooth (SKU 1-PPI-4C-31, MPN 1-PPI-4C-31) is a #4-40 thread size, 5/16 in long, stainless steel, passivated, pan-head machine screw with an internal tooth lock washer, supplied in a 50-pack…
SKU 3G-OTH-532146
Also listed as: 1PPI4C31 · 1 PPI 4C 31
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: Internal Tooth (SKU 1-PPI-4C-31, MPN 1-PPI-4C-31) is a #4-40 thread size, 5/16 in long, stainless steel, passivated, pan-head machine screw with an internal tooth lock washer, supplied in a 50-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 in applications where vibration resistance is needed. The pre-assembled washer prevents loosening, making it ideal for industrial equipment, electrical enclosures, and machinery assembly across multiple departments.
What are the specifications of the SEMS screw #4-40 thread size?
This SEMS screw has a #4-40 thread size, 5/16 in length, stainless steel construction with passivated finish, and a pan head. It includes an internal tooth lock washer, a #1 drive size, and comes in a 50-pack. The manufacturer part number is 1-PPI-4C-31.
Where to buy SEMS screws with internal tooth lock washers worldwide?
3G Electric supplies SEMS screws with internal tooth lock washers worldwide. As a global industrial solutions provider, we handle full logistics and customs clearance to deliver genuine fasteners like this #4-40 stainless steel screw to your facility, regardless of location.
How to select the correct SEMS screw for an application?
To select the correct SEMS screw, match thread size (e.g., #4-40), length (5/16 in), head type (pan), and material (stainless steel) to your assembly requirements. Ensure the internal tooth lock washer suits the mating surface hardness. Consult a technical specialist for application-specific guidance.
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.
