








🔧 Secure your insulation like a pro — engineered precision, UK made!
These 200-pack 60mm polypropylene washers are expertly crafted in the UK to provide a low-profile, durable solution for fixing soft to medium insulation panels. Designed for 4-6mm screws, they ensure optimal load distribution and resistance to chemicals, making them the go-to choice for professionals seeking reliable, long-lasting insulation support.
| ASIN | B07B1P4GF7 |
| Best Sellers Rank | 74,939 in DIY & Tools ( See Top 100 in DIY & Tools ) 552 in Washers |
| Brand Name | hawkeng |
| Colour | Natural |
| Compatible Groove Diameter | 6E+1 Millimeters |
| Country Of Origin | United Kingdom |
| Customer Reviews | 4.6 4.6 out of 5 stars (722) |
| Exterior Finish | Zinc |
| Fastener Size | M4, M5, M6 |
| Fastener Type | Washer |
| Finish Types | Galvanized |
| Inside Diameter | 5.2 Millimetres |
| Inside Diameter Tolerance | 5.2 Millimetres |
| Item Diameter | 60 Millimetres |
| Item Thickness | 5.2 Millimetres |
| Item Weight | 4.3 Grams |
| Manufacturer | Hawksworth Engineering |
| Manufacturer Part Number | INS60PPNAT200 |
| Material Type | Polypropylene |
| Number of Pieces | 200 |
| Outside Diameter | 60 Millimetres |
| Screw Head Style | Round |
| Size | 60mm x 5.2mm |
| Thread Size | 4, 5 of 6 |
| Unit Count | 200.0 count |
| Washer Type | Flat |
D**D
Easy to use, good product.
Used these to hold up polystyrene sheets as lining for my new wooden shed. Worked really well, just had to make sure that the screws weren't too long.
J**.
Solved a problem with UK weather
Screwed them through the plastic sheets on our timber greenhouse and so far it’s stopped the plastic ripping in the wind/storms. Seems to have spread the load nicely on the old fixing points. Simple and cheap fix to a recurring problem.
Z**S
Good
Good quality product
P**E
Good quality
Used for screwing cement-faced XPS panels to studs. Good quality item. Works well. Particularly good for overlap between two boards as diameter is quite large.
D**D
Washers
Perfect
A**B
great product!
Easy to use and great for PIR insulation
A**H
Very handy and easy to use
These are great but the plastic isn't as strong as some I've bought hence the 4* but they do the job. Would be useful if they were slightly thinner so the plaster goes on better
A**7
Perfect
Perfect & much cheaper than most insulation fixings I’ve found
E**A
PERFETTE E MOLTO SOLIDE !!
C**E
Muy buenas arandelas para la instalación en mi caso de manta de fibra de vidrio de 80 mm en cubierta, hubo un problema con la entrega con SEUR que el repartidor no se paso y comunico que si
T**R
Pour fixer isolation phonique dans une salle de machine. Bonne qualité et solide; grand diamètre facilite la fixation.
R**D
Diese Plastikdübeln lassen sich sehr gut verarbeiten. Ideal für eine Befestigung von Dämmplatten.
W**.
Goedkoop maar kwalitatief heel goed! Blij met deze vondst!
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Hace 2 semanas
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