can 2 of them be deployed in tandem for an 8" duct?

Yes, I’m sure that they could. They open completely up and should be able to be linked together just like most hose clamps. I’m using all of mine on 4 inch hoses now or I’d try it for you, but I’m pretty sure it will work.

I think I've overtightened the fastener and need to get a new or better one. What's max torque allowance recommended?

I don't know what the max torque is but I know I've exceeded it several times. I really do not like these. I switched to the kind you tighten with a screwdriver and I find them to be much much better.

Where are these clamps manufactured?

I don't know for sure, but probably China, like everything else these days. I will say they are pretty good clamps and I haven't had any problem with cranking on them with sufficient force.

How much weight does a hose clamp support?

I have used them as part of a dust collection system where they are not supporting anything more than 5 or 6 feet of 4” hose.

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🔧 Clamp it, twist it, own it—effortless power in your hands!

BULK 5 PACK CONVENIENCE - Stock up and stay ready with five reliable clamps, ensuring you never miss a quick fix or upgrade.
ERGONOMIC BLUE KEY DESIGN - Durable polymer key reduces knuckle strain and offers high visibility for fast, hassle-free installation.
RUST RESISTANT STAINLESS STEEL - Crafted from premium 304 stainless steel for unmatched durability and corrosion resistance indoors or outdoors.
EFFORTLESS TOOL FREE ADJUSTMENT - Say goodbye to screwdrivers—tighten or loosen clamps with a simple twist of the large, easy-grip key.
VERSATILE FIT FOR MULTIPLE APPLICATIONS - Adjustable diameter fits hoses from 3.4” to 4.7”, perfect for ductwork, automotive, RV, and more.

The Fulton 4 Inch Thumb Screw Key Adjustable Hose Clamps come in a 5-pack, featuring tool-free adjustment via a large, ergonomic blue polymer key. Made from premium 304 stainless steel, these clamps offer superior rust resistance and durability. Their flexible size range fits hoses from approximately 3.4 to 4.7 inches in diameter, making them ideal for ductwork, automotive, RV, and industrial applications.

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€ 21.29

Duties & taxes incl.

Slovakiastore

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TrustScore 4.5 | 7,300+ reviews

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The MOLLE sheath is of exceptional quality. Very happy with my purchase.

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Brand	Fulton
Material	Steel
Color	Silver
Item Weight	0.15 Kilograms
Outside Diameter	4 Inches
UPC	817918022099
Manufacturer	Fulton Woodworking Tools and Accessories
Part Number	Varitaion Hose Clamps
Item Weight	5.3 ounces
Package Dimensions	7.68 x 7.01 x 1.5 inches
Item model number	Varitaion Hose Clamps
Size	4" Hose Clamps
Style	4" Hose Clamp 5 Pack
Item Package Quantity	1
Included Components	5 Hose Clamps
Batteries Included?	No
Batteries Required?	No

Fulton 4 Inch Thumb Screw Key Adjustable Stainless Steel Hose Clamps - 5 Pack, Pipe, Dryer Vent, Dust Collection, Automotive, RV Clamps

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