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.

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.

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.

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.

Rackstuds Series Ii 4 Pack Sample Both Sizes Colors

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฿1585

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Sold byAmazon ThailandDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔧 Upgrade your rack game—fast, strong, and hassle-free!

ROBUST RELIABLE - Engineered to hold heavy equipment securely up to 20 kg.
DAMAGE FREE DESIGN - Protects sensitive hardware from scratches and electrical hazards.
EFFORTLESS INSTALLATION - Mount your gear in under 45 seconds—no tools needed.
UNIVERSAL COMPATIBILITY - Fits all standard 19” square punched vertical rails seamlessly.
PROVEN INDUSTRY STANDARD - Over 1.5 million units sold worldwide, powering top data centers.

Rackstuds Series II 4-Pack Sample offers a revolutionary cage nut replacement for 19” server racks, delivering 30% faster installation without tools. Built from durable Grivory and alloy steel, these studs support up to 20 kg, ensuring secure, damage-free mounting trusted by data centers worldwide.

Specifications

ASIN	B07W67MXRV
Brand	Rackstuds
Colour	Yellow, Turquoise
Customer Reviews	4.6 out of 5 stars 332 Reviews
Drive Style	Square
Exterior Finish	Natural (Grivory)
Fastener Type	Cage , Square
Finish Types	Plastic Coated
Item Diameter	2.2 Millimetres
Item Weight	0.03 Kilograms
Manufacturer	Rack Studs Limited
Material	Grivory
Material Type	Grivory
Metal Type	Alloy Steel
Number of Pieces	4
Part Number	RSL4C-S2
Size Name	4 Pack Sample
Thread Class	Class 2A
Thread Coverage	Unthreaded
Thread Size	M10
Thread Style	Right Hand
Thread Type	Pozidriv
Unit Count	8.0 Count

Reviews

N**U

neu

Alles bestens

5.03.2026

N**T

tres pratique

C'est vraiment bien pensé ! Je recommande a 100%

9.12.2024

B**O

Cómodo, rápido y práctico

Por fin un sistema para trabajar en racks sin dejarte las uñas y los dedos y pudiendo trabajar uno solo sin ayuda: colocas los cuatro Rackstuds del dispositivo que quieras montar en el rack, insertas el dispositivo y ya sólo tienes apretar las "tuercas" de cierre sin hacer malabarismos sujetando el dispositivo. Ahora ya sólo falta que bajen de precio y adiós a los tradicionales tornillos con tuerca de rack.

11.03.2022

H**U

Legit stuff, works 5/5

30.11.2022

A**R

Potentially weak, easily stripped using screwdriver.

3.01.2026

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

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

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