We ship worldwide — Singapore, Australia, Malaysia, Indonesia, Philippines, India, Middle East & more

SEMS Screw: External Tooth, M2.5x0.45 Thread Size, 8 mm Lg, Stainless Steel - Machine Screws with External Tooth Lock Washers
SEMSMachine Screws with External Tooth Lock Washers

SEMS Screw: External Tooth, M2.5x0.45 Thread Size, 8 mm Lg, Stainless Steel

The SEMS Screw: External Tooth (SKU 849AP5) is a machine screw with an integrated external tooth lock washer, featuring an M2.5x0.45 thread size, 8 mm length, stainless steel construction with passivated finish, pan…

SKU 3G-OTH-528667

Brand
SEMS
Item
Screw: External Tooth, M2.5x0.45 Thread Size, 8 mm Lg, Stainless Steel
Category
Machine Screws with External 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-MPE-2.5-8
Type
M2.5x0.45 Thread Size, Stainless Steel, Passivated, Pan, 25 PK
Lg
8 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: External Tooth (SKU 849AP5) is a machine screw with an integrated external tooth lock washer, featuring an M2.5x0.45 thread size, 8 mm length, stainless steel construction with passivated finish, pan head, and #1 drive size, supplied in a 25-piece pack (MPN 1-MPE-2.5-8).

Frequently Asked Questions

What is a SEMS external tooth screw used for?

A SEMS screw with an external tooth lock washer is used to fasten components while resisting loosening from vibration. The integrated washer bites into the mating surface, making it ideal for electrical grounding, panel assembly, and machinery applications where a secure, permanent hold is required.

What are the specifications of the SEMS screw M2.5x0.45 8 mm?

This SEMS screw has an M2.5x0.45 thread size, 8 mm length, stainless steel construction with passivated finish, pan head, and #1 drive size. It comes in a 25-piece pack (MPN 1-MPE-2.5-8). The integrated external tooth lock washer prevents loosening under vibration.

Where to buy SEMS external tooth screws worldwide?

3G Electric supplies SEMS external tooth screws worldwide, handling full logistics and customs clearance. As a global industrial solutions provider, we source genuine fasteners like the M2.5x0.45 8 mm stainless steel passivated pan head screw (MPN 1-MPE-2.5-8) and deliver to your facility.

How to install a SEMS screw with external tooth lock washer?

Install a SEMS screw by driving it into a pre-tapped hole or with a nut using a #1 drive tool. The integrated external tooth washer embeds into the surface as you tighten, providing vibration resistance. Avoid over-torquing to prevent stripping the stainless steel threads or damaging the washer teeth.

SEMS Products

3G Electric supplies SEMS machine screws with external 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: External Tooth, M3x0.50 Thread Size, 20 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-3-20). Key specifications — Drive Size: #1.
SEMS
SEMS Screw: External Tooth, M3x0.50 Thread Size, 20 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-3-20). Key specifications — Drive Size: #1.
SEMS Screw: External Tooth, M4x0.70 Thread Size, 8 mm Lg, Stainless Steel, Passivated, Pan, 10 PK (MPN 1-MPE-4-8). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: External Tooth, M4x0.70 Thread Size, 8 mm Lg, Stainless Steel, Passivated, Pan, 10 PK (MPN 1-MPE-4-8). Key specifications — Drive Size: #2.
SEMS Screw: External Tooth, #10-24 Thread Size, 1/2 in Lg, Steel, Zinc-Plated, Hex, 100 PK (MPN HTCEIF-1000500US-100P). Key specifications — Drive Size: 5/16 in.
SEMS
SEMS Screw: External Tooth, #10-24 Thread Size, 1/2 in Lg, Steel, Zinc-Plated, Hex, 100 PK (MPN HTCEIF-1000500US-100P). Key specifications — Drive Size: 5/16 in.
SEMS Screw: External Tooth, M2.5x0.45 Thread Size, 4 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-2.5-4). Key specifications — Drive Size: #1.
SEMS
SEMS Screw: External Tooth, M2.5x0.45 Thread Size, 4 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-2.5-4). Key specifications — Drive Size: #1.
SEMS Screw: External Tooth, #6-32 Thread Size, 3/16 in Lg, Steel, Zinc-Plated, Pan, Phillips, 100 PK (MPN MPPEI0-600180-100P). Key specifications — Drive Size: #2.
SEMS
SEMS Screw: External Tooth, #6-32 Thread Size, 3/16 in Lg, Steel, Zinc-Plated, Pan, Phillips, 100 PK (MPN MPPEI0-600180-100P). Key specifications — Drive Size: #2.
SEMS Screw: External Tooth, M3x0.50 Thread Size, 8 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-3-8). Key specifications — Drive Size: #1.
SEMS
SEMS Screw: External Tooth, M3x0.50 Thread Size, 8 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-3-8). Key specifications — Drive Size: #1.
SEMS Screw: External Tooth, 1/4"-20 Thread Size, 5/8 in Lg, Stainless Steel, Passivated, Pan (MPN 1-PPE-25C-62). Key specifications — Drive Size: #3.
SEMS
SEMS Screw: External Tooth, 1/4"-20 Thread Size, 5/8 in Lg, Stainless Steel, Passivated, Pan (MPN 1-PPE-25C-62). Key specifications — Drive Size: #3.
SEMS Screw: External Tooth, M3x0.50 Thread Size, 4 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-3-4). Key specifications — Drive Size: #1.
SEMS
SEMS Screw: External Tooth, M3x0.50 Thread Size, 4 mm Lg, Stainless Steel, Passivated, Pan, 25 PK (MPN 1-MPE-3-4). Key specifications — Drive Size: #1.