MPN

RS PRO M3 x 6mm Zinc Plated Steel Pan Head Sems Screw, External Tooth Washer

RS Stock No.:: 278-641
Brand:: RS PRO

RS PRO M3 x 6mm Zinc Plated Steel Pan Head Sems Screw, External Tooth Washer

Bulk discount available

Subtotal (1 bag of 100 units)*

£5.17

(exc. VAT)

£6.20

(inc. VAT)

FREE delivery for orders over £50.00

In Stock

1,112 unit(s) ready to ship
Plus 183 unit(s) ready to ship from another location
Plus 1,515 unit(s) shipping from 14 October 2025

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Bag(s)	Per Bag	Per unit*
1 - 4	£5.17	£0.052
5 - 9	£4.90	£0.049
10 - 29	£4.67	£0.047
30 +	£4.33	£0.043

*price indicative

Alternative

This product is not currently available. Here is our alternative recommendation.

RS PRO M3 x 12mm Zinc Plated Steel Pan Head Sems Screw, External Tooth Washer

RS Stock No.: 278-657

1 Bag of 100

£7.12

(exc. VAT)

£8.54

(inc. VAT)

RS Stock No.:: 278-641
Brand:: RS PRO

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	RS PRO
	Length	6mm
	Thread Size	M3
	Head Shape	Pan
	Drive Type	Pozidriv
	Washer Type	External Tooth
	Standards Met	BS 4183/DIN 6797A
	Material	Steel
	Finish	Bright Zinc Plated

RS PRO Stainless-Steel Sems Screw

Pre-assembled Screws have revolutionised the assembly in many parts of our lives, from Drone sub-assemblies, control systems to aerospace avionics sector.

We are proudly introducing our own branded RS PRO Stainless-Steel Sems Screw with bright zinc plating, which is particularly essential for corrosion resistance.
The low-cost Fastener consists of a pan head pozidriv screw with integral captive washer for quick and easy installation.

SEMS Screw is a fast, permanent and in combination with a nut plate, you can significantly reduce the number of components needed, especially in an electrical connector assembly, meaning more time for your project.

A significant advantage of using our Sems Screws lies in reduced inventory count and allowing you to increase your production through the easy assembly.
As SEMS Machine Screws does not require thinking about missing washers, you are extending product life and speed up the performance of the whole part.

Features and Benefits

External shake-proof washer Pan headed pozidriv screw

Bright zinc plated stainless-steel construction to protect against corrosion

Low-cost Fastener, allowing you more accessible and quicker to install than separate screws and washers

SEMS enabling you to reduce the number of components needing to complete your small or big project

Our range of 6, 10, 12 and 16 mm Sems Screw letting you lower inventory count

Applications

Not surprisingly, thanks to high-quality and friendly installation SEMS Screws have their place in:

Avionic communication systems

Flight control systems

Infra-red systems and cameras

Naval & ground fire control systems

Battery packs

PCB (Printed Circuit Board) assembly

Drone sub-assemblies

Connector assembly

Why RS PRO?

RS PRO is our family brand to go-to and brings you a wide range for high-quality and high-value products to support your project. Trusted by engineers all over the world, every part of every RS PRO product is always rigorously tested against demanding industry standards. We are only giving the RS PRO seal of approval if we are confident of their exceptional quality, which means you can be convinced too.

Note

All these are coarse metric thread. The fine thread pitch would typically start at M8 diameter.

Thread pitch as follows.

M3 x 0.5mm pitch
M4 x 0.7mm pitch
M5 x 0.8mm pitch
M6 x 1.0mm pitch

The screw measures 6 mm long and has M3 threading for a tight fastening.

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