Am I right in saying these require M6 screws? Is it the same size screws (different lengths) for both size of space plug?

Anything upto a M6 or 6mm .... work fine with 5mm screws too ... the central bore diameter is 6.5mm ... as regards length as they are extendable you would have to select the required length as appropriate .. hope that helps and anything else you want to know please feel very free :)

I'm looking for a way to hang thick curtains to a v large window with approx. 80mm insulated plasterboard. What weight can these space plugs hold?

Hi and thanks for your question. I'm the inventor of Space-Plug and used to be a professional handyman. You have a difficult problem to solve. Space-Plug works to prevent compression. Its not designed to be Load Bearing. If you used space-plug to bridge the gap the curtains load would be taken by the screw itself. If you could have several on each bracket it might well work but fundamentally hanging something heavy off a 6mm screw thats actually 80mm out of the wall is a big ask. A lot would depend on the curtain pole bracket design. If you'd like to discuss further feel free to give me a call 07901 553290.

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Space-Plug Adjustable Spacer Fixings (XL size for 45-80mm gaps), 50 Pack of Original Orange Spacers, Professional & DIY use for kitchen, bedroom, bathroom & furniture installations

Product ID: 64246130

Details

Brand
Space-Plug
Colour
Orange
Item dimensions L x W x H
35 x 24.5 x 9
Material
PP Plastic
Size
45-80mm flange

🔧Lateral & horizontal flexibility

🧱5M+ units sold worldwide

⏱️30-50mm adjustable gap fit

£44.59

Duties & taxes included

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Description

🧡 Plug into perfection — the spacer that professionals and DIYers swear by!

VERSATILE USE CASES - Ideal for kitchens, bathrooms, bedrooms, and even commercial furniture setups.
DURABLE ACCESSIBLE - Robust orange spacers that stay accessible post-installation for easy adjustments.
EFFORTLESS INSTALLATION - Say goodbye to fiddly shims and L-brackets—plug and play perfection every time.
AWARD WINNING RELIABILITY - Trusted by pros with over 5 million units sold globally.
PRECISION FIT FOR ANY SPACE - Adjusts seamlessly between 30-50mm gaps for flawless alignment on uneven walls.

Space-Plug Adjustable Spacer Fixings are award-winning, professional-grade spacers designed for 30-50mm gaps. With over 5 million units sold, these robust orange spacers simplify furniture and unit installations by providing precise lateral and horizontal adjustments, eliminating the need for shims or brackets. Perfect for kitchens, bathrooms, bedrooms, and commercial use, they ensure a neat, stable, and hassle-free fit every time.

Specifications

ASIN	B00M789QWG
Best Sellers Rank	26,541 in DIY & Tools ( See Top 100 in DIY & Tools ) 95 in Plugs (DIY & Tools)
Brand Name	Space-Plug
Colour	Orange
Compatible Groove Diameter	8E+1 Millimeters
Customer Reviews	4.7 4.7 out of 5 stars (249)
Fastener Type	Plugs
Finish Types	Zinc Chromate
Grade Rating	Commercial or Residential
Item Diameter	30 Millimetres
Item Dimensions	35 x 24.5 x 9 centimetres
Item Shape	Round
Item Type Name	Spacer
Item Weight	0.54 Kilograms
Manufacturer	Space-Plug
Manufacturer Part Number	50SPL
Material Type	PP (Polypropylene) Plastic
Model Number	FOR50SPL
Number Of Items	50
Number of Pieces	50
Outside Diameter	30 Millimetres
Screw Head Style	Round
Set Name	45-80mm
Size	45-80mm, flange diam 30mm, bore diam 6.5mm
Thread Size	80-1.75
UPC	616204333440 696177943525
Unit Count	1.0 count

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