Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

SEMS #4-40 x 1/8 in Stainless Steel Pan Head Machine Screw with - Machine Screws with Flat & Split Lock Washers
SEMSMachine Screws with Flat & Split Lock Washers

SEMS #4-40 x 1/8 in Stainless Steel Pan Head Machine Screw with

The SEMS Screw: Flat/Split Lock is a #4-40 thread size, 1/8 in long, stainless steel, passivated, pan head machine screw with a #1 drive size, supplied in a 10-pack (MPN 1-PPX-4C-18). This pre-assembled fastener…

SKU 3G-OTH-525180

Also listed as: 1PPX4C18 · 1 PPX 4C 18

Brand
SEMS
Item
#4-40 x 1/8 in Stainless Steel Pan Head Machine Screw with
Part Number
1-PPX-4C-18
Category
Machine Screws with Flat & Split Lock Washers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineerMessage via Telegram
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Local availability & support — Singapore

Local office
20 Woodlands Link #09-05, Singapore 738733
Phone
+65 8878 8355
Delivery
Same-day or next-business-day delivery within Singapore for in-stock items; 7–14 days for factory-order parts from Europe.
Payment
Invoicing in SGD. PayNow, bank transfer, and corporate PO accepted.
Ships to
Singapore

Technical Specifications

SEMS
Manufacturer Part Number
1-PPX-4C-18
Type
#4-40 Thread Size, Stainless Steel, Passivated, Pan, 10 PK
Lg
1/8 in
Drive Size
#1

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

SEMS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The SEMS Screw: Flat/Split Lock is a #4-40 thread size, 1/8 in long, stainless steel, passivated, pan head machine screw with a #1 drive size, supplied in a 10-pack (MPN 1-PPX-4C-18). This pre-assembled fastener combines a flat and split lock washer for efficient installation.

Frequently Asked Questions

What is a SEMS screw with flat and split lock washer used for?

A SEMS screw with flat and split lock washer is used in industrial assembly to fasten components while preventing loosening from vibration. The pre-assembled washer stack saves installation time. Common applications include electrical enclosures, machinery panels, and instrumentation where a secure, corrosion-resistant stainless steel fastener is required.

What are the specifications of the SEMS screw #4-40 x 1/8 in?

This SEMS screw has a #4-40 thread size, 1/8 in length, stainless steel passivated finish, pan head, and #1 drive size. It includes a flat and split lock washer pre-assembled. The manufacturer part number is 1-PPX-4C-18, and it is supplied in a 10-pack.

Where to buy SEMS screws #4-40 x 1/8 in worldwide?

3G Electric supplies SEMS screws #4-40 x 1/8 in worldwide. As a global industrial solutions provider, we handle full logistics, customs clearance, and delivery to your facility. Contact us for availability and lead time on this SEMS screw part number 1-PPX-4C-18.

How to install a SEMS screw with flat and split lock washer?

Install a SEMS screw by driving it into a pre-tapped hole or with a nut using a #1 drive size tool. The pre-assembled flat washer distributes load, while the split lock washer resists loosening from vibration. Tighten to the torque specified for #4-40 stainless steel fasteners; avoid over-torquing to prevent thread stripping.

Not sure this is the right part? Photo-identify it

SEMS Products

3G Electric supplies SEMS machine screws with flat & split lock washers. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from SEMS

View all SEMS parts
#4-40 thread size, 3/8 in length, stainless steel, passivated finish, pan head, #1 drive size. Pre-assembled with flat and split lock washers for even load distribution and vibration resistance. Suitable for fastening components in machinery and electrical assemblies
SEMS
#4-40 thread size, 3/8 in length, stainless steel, passivated finish, pan head, #1 drive size. Pre-assembled with flat and split lock washers for even load distribution and vibration resistance. Suitable for fastening components in machinery and electrical assemblies
#8-32 thread, 1/4 in length, stainless steel, passivated, pan head, #2 drive size. Pre-assembled flat and split lock washers prevent loosening from vibration. Suitable for fastening components in machinery, electrical panels, and industrial equipment
SEMS
#8-32 thread, 1/4 in length, stainless steel, passivated, pan head, #2 drive size. Pre-assembled flat and split lock washers prevent loosening from vibration. Suitable for fastening components in machinery, electrical panels, and industrial equipment
Pre-assembled #4-40 thread, 5/16 in long, stainless steel, passivated pan head machine screw with a #1 drive size. Includes a flat washer for load distribution and a split lock washer to resist loosening from vibration. Supplied in a 10-pack. Suitable for general assembly applications in electronics and light machinery
SEMS
Pre-assembled #4-40 thread, 5/16 in long, stainless steel, passivated pan head machine screw with a #1 drive size. Includes a flat washer for load distribution and a split lock washer to resist loosening from vibration. Supplied in a 10-pack. Suitable for general assembly applications in electronics and light machinery
Pre-assembled #8-32 thread, 1/2 in long, stainless steel, passivated, pan head machine screw with a #2 drive size. Includes a flat washer for load distribution and a split lock washer to resist loosening from vibration. Suitable for fastening components in machinery, electrical enclosures, and industrial assemblies. Sold in a 10-pack
SEMS
Pre-assembled #8-32 thread, 1/2 in long, stainless steel, passivated, pan head machine screw with a #2 drive size. Includes a flat washer for load distribution and a split lock washer to resist loosening from vibration. Suitable for fastening components in machinery, electrical enclosures, and industrial assemblies. Sold in a 10-pack
Pre-assembled #6-32 thread, 1/4 in long stainless steel passivated pan head machine screw with a #2 drive size. Includes a flat washer and a split lock washer to distribute load and resist loosening from vibration. Suitable for general industrial fastening applications where a compact, corrosion-resistant fastener is required
SEMS
Pre-assembled #6-32 thread, 1/4 in long stainless steel passivated pan head machine screw with a #2 drive size. Includes a flat washer and a split lock washer to distribute load and resist loosening from vibration. Suitable for general industrial fastening applications where a compact, corrosion-resistant fastener is required
This #6-32 thread size, 3/4 in length, stainless steel, passivated, pan head machine screw comes with a pre-assembled flat and split lock washer. The #2 drive size allows for standard tool use. Suitable for fastening components in machinery, electrical enclosures, and industrial assemblies where vibration resistance is required
SEMS
This #6-32 thread size, 3/4 in length, stainless steel, passivated, pan head machine screw comes with a pre-assembled flat and split lock washer. The #2 drive size allows for standard tool use. Suitable for fastening components in machinery, electrical enclosures, and industrial assemblies where vibration resistance is required
Pre-assembled #8-32 thread, 3/4 in long, stainless steel, passivated pan head machine screw with a #2 drive size. Includes a flat washer and a split lock washer to distribute load and resist loosening from vibration. Suitable for fastening components in machinery, electrical panels, and industrial equipment. Sold in a 10-pack
SEMS
Pre-assembled #8-32 thread, 3/4 in long, stainless steel, passivated pan head machine screw with a #2 drive size. Includes a flat washer and a split lock washer to distribute load and resist loosening from vibration. Suitable for fastening components in machinery, electrical panels, and industrial equipment. Sold in a 10-pack
#10-24 thread size, 1/2 in length, stainless steel, passivated finish, pan head, #2 drive size. Pre-assembled flat and split lock washers provide vibration resistance and load distribution. Suitable for machinery, electrical panels, and automotive assemblies
SEMS
#10-24 thread size, 1/2 in length, stainless steel, passivated finish, pan head, #2 drive size. Pre-assembled flat and split lock washers provide vibration resistance and load distribution. Suitable for machinery, electrical panels, and automotive assemblies