We ship to the Philippines — door-to-door, customs and logistics handled by 3G Electric

SEMS Screw: Internal Tooth, M2.5x0.45 Thread Size, 4 mm Lg, Stainless Steel - Machine Screws with Internal Tooth Lock Washers
SEMSMachine Screws with Internal Tooth Lock Washers

SEMS Screw: Internal Tooth, M2.5x0.45 Thread Size, 4 mm Lg, Stainless Steel

The SEMS Screw: Internal Tooth (SKU 849C17) is a machine screw with an internal tooth lock washer, featuring M2.5x0.45 thread size, 4 mm length, stainless steel, passivated, pan head, in a 25-pack. Key specifications…

SKU 3G-OTH-532120

Brand
SEMS
Item
Screw: Internal Tooth, M2.5x0.45 Thread Size, 4 mm Lg, Stainless Steel
Category
Machine Screws with Internal Tooth Lock Washers
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
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

Technical Specifications

SEMS
Manufacturer Part Number
1-MPI-2.5-4
Type
M2.5x0.45 Thread Size, Stainless Steel, Passivated, Pan, 25 PK
Lg
4 mm
Drive Size
#1
View Full Spec Sheet

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: Internal Tooth (SKU 849C17) is a machine screw with an internal tooth lock washer, featuring M2.5x0.45 thread size, 4 mm length, stainless steel, passivated, pan head, in a 25-pack. Key specifications include a #1 drive size and manufacturer part number 1-MPI-2.5-4.

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 pre-assembled washer bites into the mating surface, making it ideal for electrical grounding, panel assembly, and general industrial fastening applications.

What are the specifications of the SEMS screw M2.5x0.45 4 mm?

This SEMS screw has an M2.5x0.45 thread, 4 mm length, stainless steel passivated finish, pan head, #1 drive size, and includes an internal tooth lock washer. It comes in a 25-pack with manufacturer part number 1-MPI-2.5-4.

Where to buy SEMS screws in worldwide?

3G Electric supplies SEMS screws worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source and deliver genuine fasteners like the M2.5x0.45 internal tooth screw to any location. Contact us for pricing and lead time.

How to select the right SEMS screw for an application?

Select a SEMS screw by matching thread size (M2.5x0.45), length (4 mm), head style (pan), and drive size (#1) to your assembly requirements. The internal tooth lock washer provides vibration resistance; choose stainless steel passivated for corrosion resistance in demanding environments.

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.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

More from SEMS

View all SEMS parts
SEMS Screw: Internal Tooth, #4-40 Thread Size, 1/4 in Lg, Steel, Zinc-Plated, Pan, Slotted, 100 PK (MPN MSPII0-400250-100P)
SEMS
SEMS Screw: Internal Tooth, #4-40 Thread Size, 1/4 in Lg, Steel, Zinc-Plated, Pan, Slotted, 100 PK (MPN MSPII0-400250-100P)
SEMS Screw: Internal Tooth, M5x0.80 Thread Size, 16 mm Lg, Stainless Steel, Passivated, Pan, 5 PK (MPN 1-MPI-5-16). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: Internal Tooth, M5x0.80 Thread Size, 16 mm Lg, Stainless Steel, Passivated, Pan, 5 PK (MPN 1-MPI-5-16). Key specifications — Drive Size: #2.
SEMS Screw: Internal Tooth, M3x0.50 Thread Size, 6 mm Lg, Stainless Steel, Plain, Pan, 25 PK (MPN MPPJIX03006-025P1). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: Internal Tooth, M3x0.50 Thread Size, 6 mm Lg, Stainless Steel, Plain, Pan, 25 PK (MPN MPPJIX03006-025P1). Key specifications — Drive Size: #2.
SEMS Screw: Internal Tooth, #6-32 Thread Size, 1/2 in Lg, Steel, Zinc-Plated, Pan, Phillips, 100 PK (MPN MPPII0-600500-100P). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: Internal Tooth, #6-32 Thread Size, 1/2 in Lg, Steel, Zinc-Plated, Pan, Phillips, 100 PK (MPN MPPII0-600500-100P). Key specifications — Drive Size: #2.
SEMS Screw: Internal Tooth, #2-56 Thread Size, 1/8 in Lg, Stainless Steel, Passivated, Pan, 50 PK (MPN 1-PPI-2C-18). Key specifications — Drive Size: #1.
SEMS
SEMS Screw: Internal Tooth, #2-56 Thread Size, 1/8 in Lg, Stainless Steel, Passivated, Pan, 50 PK (MPN 1-PPI-2C-18). Key specifications — Drive Size: #1.
SEMS Screw: Internal Tooth, M3x0.50 Thread Size, 12 mm Lg, Stainless Steel, Plain, Pan, 10 PK (MPN MPPJIX03012-010P1). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: Internal Tooth, M3x0.50 Thread Size, 12 mm Lg, Stainless Steel, Plain, Pan, 10 PK (MPN MPPJIX03012-010P1). Key specifications — Drive Size: #2.
SEMS Screw: Internal Tooth, #8-32 Thread Size, 1/2 in Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-PPI-8C-50). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: Internal Tooth, #8-32 Thread Size, 1/2 in Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-PPI-8C-50). Key specifications — Drive Size: #2.
SEMS Screw: Internal Tooth, #2-56 Thread Size, 3/8 in Lg, Steel, Zinc-Plated, Pan, Phillips, 50 PK (MPN MPPII0-200370-050P). Key specifications — Drive Size: #1.
SEMS
SEMS Screw: Internal Tooth, #2-56 Thread Size, 3/8 in Lg, Steel, Zinc-Plated, Pan, Phillips, 50 PK (MPN MPPII0-200370-050P). Key specifications — Drive Size: #1.