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Showing Results For: Sems Screws

Sems Screws

The word SEMS originated from The Illinois Tool Works Inc., which made machines that produced pre-asSEMbled washers and screws. SEMS screws (or SEM screws) are machine screws with a lock created by combining a bolt with permanently pre-attached washers to save users assembly time. They combine two separate parts into one pre-assembled, inexpensive screw. 

SEM fasteners allow for fast installation, permanence, and easy adaptability to many applications with washers under the head. There's no need to worry about the washer missing when using these screws because the treads are more significant than the initial diameter, and the washer stays in place without falling loose from the bolt.

Our large, in-stock inventory includes steel and stainless-steel SEMS screws in various sizes and head styles, including hex, hex washer, and a pan head with different lengths and diameters.

Benefits of SEM Fasteners:

These fasteners can offer many benefits, especially when it comes to fast and easy assembly options. Some of the most significant benefits are as follows.

  • No Missing Washers

Losing a washer between cracks of a machine build can be a headache with time, inventory, and cost. However, the SEMS mitigates failures related to missing washers and time wasted looking for lost components. The machine builder can assemble with confidence that the washer is secure.

  • Quick and Easy Installation

SEMS allows for faster product assembly, thus boosting both your output and productivity overall. Since SEMS are complete with a washer, this makes the installation of your components faster and easier. It avoids the extra step of acquiring the suitable washer and installing it onto the screw. Especially for small spaces and designs, SEMS is very helpful, thus increasing productivity and reducing build time. In addition, they also reduce foreign object damage and lower kitting part count.

  • Ideal for Inaccessible Areas

You will no longer need to worry more about loose washers during repair or service and disassembly processes. It's both safer and less time-consuming, especially in some machine regions that are difficult to access. 

  • Less/Decreased Inventory

For some, inventory space is a luxury, and it's astonishing how much room a lot of washers may take up. In terms of inventory, not accounting for two separate part numbers is a benefit of pre-assembled screws.

  • Low cost and High efficiency

They have increased efficiency, easy access, and low cost as already pre-assembled.

  • Versatile Nature of Use

Pre-assembled screws having vast versatility can be used in various applications ranging from battery pack assembly to laboratory automation machines. 

Applications of the SEM fasteners:

  • SEMS can be used anywhere where screws and washers are required. 
  • They are primarily used in Construction, Electrical, Automotive, and Switch Gear Industries. 
  • They are ideal for commercial use in homes by DIY Enthusiasts and workshops. 
  • They are also used widely in the electronics industry.
  • Other application examples include use in the aerospace avionics sector.

Conclusion:

We offer a variety of SEMS screws with their vast applications. Visit Enrgtech, and you will find quality fasteners you need either by size, length, material, finish, or other factors intending to save your time and money. Our real-time inventory will show you products we currently have on hand at competitive prices from the market.

 


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Enrgtech #
Manufacturer Part No
Name
Availability
Price
Rating
Yahata Neji
M4X15, Yahata Neji
12 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 5.64
5 +
£ 5.35
10 +
£ 5.08
Legrand
0 367 75, Legrand
Pre Order
Check Stock & Lead Times Packaging Options
1 +
£ 51.38
Yahata Neji
M5X8, Yahata Neji
15 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 5.64
5 +
£ 5.37
10 +
£ 5.08
RS Pro
Rohs Verified
278-742, RS Pro
117 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 10.96
5 +
£ 10.42
10 +
£ 9.86
RS Pro
Rohs Verified
278-950, RS Pro
7 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 11.20
5 +
£ 10.64
10 +
£ 10.08
RS Pro
Rohs Verified
278-821, RS Pro
476 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 6.50
5 +
£ 6.18
10 +
£ 5.84
RS Pro
Rohs Verified
279-240, RS Pro
30 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 9.68
5 +
£ 9.19
10 +
£ 8.71
Yahata Neji
Rohs Verified
P-4 3MC 4X12, Yahata Neji
Pre Order
Check Stock & Lead Times Packaging Options
1 +
£ 1.78
5 +
£ 1.70
10 +
£ 1.60
RS Pro
Rohs Verified
278-966, RS Pro
64 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 10.57
5 +
£ 10.04
10 +
£ 9.54
RS Pro
Rohs Verified
279-183, RS Pro
48 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 5.72
5 +
£ 5.44
10 +
£ 5.16
Yahata Neji
Rohs Verified
P-3 3MC 4X15, Yahata Neji
9 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 3.49
5 +
£ 3.31
10 +
£ 3.12
Yahata Neji
Rohs Verified
P-3 3MC 5X18, Yahata Neji
31 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 3.54
5 +
£ 3.36
10 +
£ 3.19
RS Pro
Rohs Verified
278-736, RS Pro
67 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 11.49
5 +
£ 10.91
10 +
£ 10.35
RS Pro
Rohs Verified
278-972, RS Pro
60 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 12.41
5 +
£ 11.77
10 +
£ 11.17
RS Pro
Rohs Verified
278-786, RS Pro
77 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 14.33
5 +
£ 13.63
10 +
£ 12.91
RS Pro
Rohs Verified
279-155, RS Pro
22 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 4.53
5 +
£ 4.29
10 +
£ 4.07
Yahata Neji
Rohs Verified
P-3 3MC 4X20, Yahata Neji
38 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 3.54
5 +
£ 3.38
10 +
£ 3.20
Yahata Neji
Rohs Verified
P-4 3MC 5X12, Yahata Neji
34 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 3.54
5 +
£ 3.36
10 +
£ 3.18
Yahata Neji
Rohs Verified
P-4 3MC 2.6X6, Yahata Neji
37 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 1.78
RS Pro
Rohs Verified
279-278, RS Pro
29 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 11.83
5 +
£ 11.22
10 +
£ 10.65
Yahata Neji
Rohs Verified
P-3 3MC 3X18, Yahata Neji
3 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 1.78
Yahata Neji
Rohs Verified
P-3 3MC 2X4, Yahata Neji
91 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 1.78
5 +
£ 1.68
10 +
£ 1.60
RS Pro
Rohs Verified
278-641, RS Pro
1291 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 4.67
5 +
£ 4.43
10 +
£ 4.21
Yahata Neji
Rohs Verified
P-3 3MC 3X6, Yahata Neji
37 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 1.78
5 +
£ 1.70
10 +
£ 1.59
Yahata Neji
Rohs Verified
P-3 3MC 2X10, Yahata Neji
65 In Stock
Check Stock & Lead Times Packaging Options
1 +
£ 1.78
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New Items
New items
279-240, RS Pro

279-240, RS Pro

Single Coil Spring Washer Sems units consisting of pan headed Pozidriv™ machine screws together with integral captive washers. Bright zinc finish Easier and quicker to install than separate screws and washers
New items
278-742, RS Pro

278-742, RS Pro

External Shakeproof Washer Sems units consisting of pan headed Pozidriv™ machine screws together with integral captive washers. Bright zinc finish Easier and quicker to install than separate screws and washers Note All these are metric coarse thread. The fine thread pitch would normally 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.
New items
278-950, RS Pro

278-950, RS Pro

Plain Flat Washer Sems units consisting of pan headed Pozidriv™ machine screws together with integral captive washers. Bright zinc finish Easier and quicker to install than separate screws and washers
New items
278-821, RS Pro

278-821, RS Pro

Plain Flat Washer Sems units consisting of pan headed Pozidriv™ machine screws together with integral captive washers. Bright zinc finish Easier and quicker to install than separate screws and washers
New items
RS_278-865, RS PRO

RS_278-865, RS PRO

RS PRO SEMS Screw with Plain Washer RS PRO SEMS Screw From the trusted RS PRO brand, these pan head SEMS screws are ideal for when a good speed of assembly is required. SEMS screws have advantages over similar threaded screws in that a loose washer is pre-fitted to the fastener, saving you time in selecting and fitting a separate washer. As such, whenever a quick installation is required, these SEMS screws are ideal. The screws feature a bright zinc finish which provides an element of corrosion resistance which makes them ideal for use in most indoor environments. They also feature a pozidriv head for maximum torque in installation. Available in the following sizes; 278-821 is an M3 x 6mm SEMS screw 278-837 is an M3 x 12mm SEMS screw 278-865 is an M4 x 6mm SEMS screw 278-871 is an M4 x 12mm SEMS screw 278-916 is an M5 x 10mm SEMS screw 278-922 is an M5 x 16mm SEMS screw 278-950 is an M6 x 12mm SEMS screw 278-966 is an M6 x 16mm SEMS screw 278-972 is an M6 x 20mm SEMS screw Features and Benefits Screw with pozidriv head Plain washer Easier and quicker to install than separate screws and washers Bright Zinc Finish Applications Used wherever conventional screw fasteners are needed, SEMS screws are ideal for optimized work environments due to being a pre-assembled washer and screw combination. They are designed with convenience in mind, saving you time and effort in installation. They might commonly be used in; • Production environments • Maintenance • DIY Applications What does SEM mean? In this case, SEM is simply a shorthand way of saying 'pre-assembled.' What is the advantage of a Pozidriv screw? A Pozidriv screw is an improvement on the crosshead screw, or Phillips screw. Like the crosshead, the Pozidriv screw naturally centers the torque when a Pozidrive screwdriver is applied, meaning there is less resistance and more control when screwing and unscrewing. To lessen the chance of the driver slipping from the screw head, known as cam out, the P...
New items
RS_279-234, RS PRO

RS_279-234, RS PRO

RS PRO Stainless-Steel Pan Sems Screw 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 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?
New items
RS_278-786, RS PRO

RS_278-786, RS PRO

RS PRO Stainless-Steel Sems Screw 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 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?
New items
RS_278-950, RS PRO

RS_278-950, RS PRO

RS PRO SEMS Screw with Plain Washer RS PRO SEMS Screw From the trusted RS PRO brand, these pan head SEMS screws are ideal for when a good speed of assembly is required. SEMS screws have advantages over similar threaded screws in that a loose washer is pre-fitted to the fastener, saving you time in selecting and fitting a separate washer. As such, whenever a quick installation is required, these SEMS screws are ideal. The screws feature a bright zinc finish which provides an element of corrosion resistance which makes them ideal for use in most indoor environments. They also feature a pozidriv head for maximum torque in installation. Available in the following sizes; 278-821 is an M3 x 6mm SEMS screw 278-837 is an M3 x 12mm SEMS screw 278-865 is an M4 x 6mm SEMS screw 278-871 is an M4 x 12mm SEMS screw 278-916 is an M5 x 10mm SEMS screw 278-922 is an M5 x 16mm SEMS screw 278-950 is an M6 x 12mm SEMS screw 278-966 is an M6 x 16mm SEMS screw 278-972 is an M6 x 20mm SEMS screw Features and Benefits Screw with pozidriv head Plain washer Easier and quicker to install than separate screws and washers Bright Zinc Finish Applications Used wherever conventional screw fasteners are needed, SEMS screws are ideal for optimized work environments due to being a pre-assembled washer and screw combination. They are designed with convenience in mind, saving you time and effort in installation. They might commonly be used in; • Production environments • Maintenance • DIY Applications What does SEM mean? In this case, SEM is simply a shorthand way of saying 'pre-assembled.' What is the advantage of a Pozidriv screw? A Pozidriv screw is an improvement on the crosshead screw, or Phillips screw. Like the crosshead, the Pozidriv screw naturally centers the torque when a Pozidrive screwdriver is applied, meaning there is less resistance and more control when screwing and unscrewing. To lessen the chance of the driver slipping from the screw head, known as cam out, the P...
New items
P-4 3MC 4X12, Yahata Neji

P-4 3MC 4X12, Yahata Neji

Steel + Spring Washer / Plain Washer-Incorporating P4 3MC Trivalent chromate plating Small flat washer outer diameters: M2.5: 5 mm, M2.6: 5 mm, M3: 6 mm, M4: 8 mm, M5: 10 mm
New items
RS_278-916, RS PRO

RS_278-916, RS PRO

RS PRO SEMS Screw with Plain Washer RS PRO SEMS Screw From the trusted RS PRO brand, these pan head SEMS screws are ideal for when a good speed of assembly is required. SEMS screws have advantages over similar threaded screws in that a loose washer is pre-fitted to the fastener, saving you time in selecting and fitting a separate washer. As such, whenever a quick installation is required, these SEMS screws are ideal. The screws feature a bright zinc finish which provides an element of corrosion resistance which makes them ideal for use in most indoor environments. They also feature a pozidriv head for maximum torque in installation. Available in the following sizes; 278-821 is an M3 x 6mm SEMS screw 278-837 is an M3 x 12mm SEMS screw 278-865 is an M4 x 6mm SEMS screw 278-871 is an M4 x 12mm SEMS screw 278-916 is an M5 x 10mm SEMS screw 278-922 is an M5 x 16mm SEMS screw 278-950 is an M6 x 12mm SEMS screw 278-966 is an M6 x 16mm SEMS screw 278-972 is an M6 x 20mm SEMS screw Features and Benefits Screw with pozidriv head Plain washer Easier and quicker to install than separate screws and washers Bright Zinc Finish Applications Used wherever conventional screw fasteners are needed, SEMS screws are ideal for optimized work environments due to being a pre-assembled washer and screw combination. They are designed with convenience in mind, saving you time and effort in installation. They might commonly be used in; • Production environments • Maintenance • DIY Applications What does SEM mean? In this case, SEM is simply a shorthand way of saying 'pre-assembled.' What is the advantage of a Pozidriv screw? A Pozidriv screw is an improvement on the crosshead screw, or Phillips screw. Like the crosshead, the Pozidriv screw naturally centers the torque when a Pozidrive screwdriver is applied, meaning there is less resistance and more control when screwing and unscrewing. To lessen the chance of the driver slipping from the screw head, known as cam out, the P...
New items
P-3 3MC 3X16, Yahata Neji

P-3 3MC 3X16, Yahata Neji

Steel + Spring Washer / Plain Washer-Incorporating P-3 3MC Trivalent chromate plating Plain washer outside diameters: M2: 6 mm, M3: 8 mm, M4: 10 mm, M5: 12 mm
New items
RS_279-240, RS PRO

RS_279-240, RS PRO

RS PRO Stainless-Steel Pan Sems Screw 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 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?
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Sems Screws and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Sems Screws or any other product.
This depends on the Sems Screws individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Sems Screws and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Sems Screws.
Yes. We keep updating our stock frequently and if a product like Sems Screws is not in stock then we will let you know.