Rackstuds 40C Rack Mount Solution Series II – No More Cage Nuts! The Easiest and Safest Server Rack Solution in 19" Racks with Square Punched Vertical Rails. Contains 80 Studs; 40 of Each Size/Color

Rackstuds 40C Rack Mount Solution Series II – No More Cage Nuts! The Easiest and Safest Server Rack Solution in 19" Racks with Square Punched Vertical Rails. Contains 80 Studs; 40 of Each Size/Color

Q: What kind of plastic are these? pla, abs, or pteg?

PLA, ABS or PTEG ain't going to cut it I'm afraid. While the bags are PTEG, the Rackstuds are made of Grivory, a metal replacement plastic often found in car door handles and wiper blade arms.

Q: Which version of rackstuds will fit the startech 4u 19" desktop open frame rack?

Sadly the holes on some of the Startech racks are too small for Rackstuds. Search Google for our post on this using Rackstuds and Startech as the keywords. You could try a sample pack that has both sizes/colors to test first if you like.

Q: are the samples the same quality materials as the actual 100 Pack ? Or they are just guide for figuring out the sizes

Thanks for your question. The samples are production parts and fit for field use. They just contain both sizes/colors along with eight nuts; four in black and four in turquoise so you can determine which size fits your rack best. In saying that, the new Series II Maroon studs fit 70~80% of the rails in the market.

Q: any reason why I should use the yellow lockwasher? It's hard for me to get them close together when I use those

Yes, because it's designed to hold the Rackstud in an open position so it doesn't fall through the hole. Just insert the Rackstud, place the yellow lockwasher on the correct way with the little extra bit facing the rack/Rackstud, mount your gear and then tighten the screw. It will force the little yellow bit in place. If you can't tighten it enough by hand use a screwdriver the first time to ensure proper seating of the yellow lockwasher.

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Product ID: 475284958

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Details

Material
Zinc
Fastener type
Square
Thread size
10
Exterior finish
Zinc
Colour
red and purple

⚡30% faster rack mounting

🔧Front-install, tool-free setup

🛡️400+ lbs shear strength

Frequently Bought Together

Rackstuds 40C Series II - Rack Screws for Server Rack Rails 19" Square Punched Vertical Rails, Perfect Cage Nut Replacement, Rack Nuts, Rack Studs Rack Mount Screws - 80 Studs; 40 of Each Size/Color

Rackstuds DUO2 1RU Series II Rack Mount Solution - Effortless Alternative to Traditional Rack Screws and Cage Nuts & Server Rack Screws Ideal for Server Hardware Setup - 2-Pack, Universal Version

Description

🚀 Rack smarter, not harder—ditch cage nuts forever!

SPEED UP YOUR RACK SETUP - Mount your 19" gear 30% faster than cage nuts—time is money.
STRONGER SMARTER SERIES II - 30% stronger threads and improved leverage for thicker rails and lasting durability.
UNMATCHED STRENGTH SAFETY - Withstands over 400 lbs shear force without scratching or electrical risks.
EFFORTLESS FRONT INSTALLATION - Install from the front in under 30 seconds—no more fiddling behind racks.
TRUSTED BY DATA CENTERS WORLDWIDE - Over 1.5 million units sold—join the global sysadmin elite.

Rackstuds 40C Series II is a zinc-plated, tool-free rack mounting solution designed for 19" square punched rails. It replaces traditional cage nuts, enabling 30% faster installation with front access, supports over 400 lbs shear force, and is trusted by data centers globally with over 1.5 million units sold.

Specifications

Manufacturer	Rack Studs Limited
Part number	RSL40C-S2
Item Weight	331 g
Item model number	RSL40C-S2
Size	40 Pack
Color	red and purple
Finish	Zinc-plated
Material	Zinc
Item Package Quantity	1
Number Of Pieces	40
Head Style	Flat
Cutting Diameter	2.2 Millimeters
Plug Profile	Rack Mount
Batteries Included?	No
Batteries Required?	No
Item diameter	2.2 Millimeters

Have a Question? See What Others Asked

What kind of plastic are these? pla, abs, or pteg?

Which version of rackstuds will fit the startech 4u 19" desktop open frame rack?

are the samples the same quality materials as the actual 100 Pack ? Or they are just guide for figuring out the sizes

any reason why I should use the yellow lockwasher? It's hard for me to get them close together when I use those

Common Questions

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Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

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Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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