






🔩 Lock in your adventure gear with pro-grade T-slot bolts!
These T Slot Bolts are precision-engineered from 304 stainless steel with a 20x20x4mm square base and M8 threading, providing a rust-resistant, durable, and universal mounting solution for roof rack crossbars. Perfect for securely attaching bike racks, ski carriers, kayaks, solar panels, and more, they slide easily into most T-track systems without drilling, delivering a clean, professional finish for SUVs, RVs, and outdoor enthusiasts.
| ASIN | B0CKLWSTSF |
| Best Sellers Rank | #12,161 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #2 in Bike Car Rack Accessories |
| Brand | moroinriz |
| Color | M8x30mm,12pk |
| Date First Available | October 6, 2023 |
| Exterior Finish | Stainless Steel |
| Fastener Type | T-Bolt |
| Head Style | Square |
| Head Type | Square |
| Item Hardness | Grade 2 |
| Item Weight | 14.9 ounces |
| Item model number | QM-BOL-0026 |
| Manufacturer | moroinriz |
| Manufacturer Grade | Grade 304 |
| Material | Stainless Steel |
| Metal Type | Stainless Steel |
| Number of Pieces | 12 |
| Product Dimensions | 0.79 x 0.79 x 1.18 inches |
| Set Name | 12-Pack |
| Size | M8 |
| Thread Size | M8 |
| Thread Style | Right Hand |
| Thread Type | Right Hand |
O**L
Solid T track bolts for most/all T rail systems
Fit great in a standard truck bed rack rail system. I tried them in the bed rack system and in my roof top tent system and they work well - apparently the "T" bolt system is universal and should work for any "T" rail system attachment you have. Should. The hardware is not Grade 8, but it's sturdy and I was able to get good grip and tightening on it with no movement using the lock washers.
A**M
Great oem bolts for Thule racks
Worked perfect for installing my Yakima ski racks onto my Thule bed racks! Worked like oem.
A**N
Perfect fit for yakima jetstream
I used these on my yakima jetstream load bars to install a yakima sidewinder tandem rack. I went with the 8mm as it seemed better suited to the higher potential load of this combination. I did 3d print an insert to make the nuts removable without a tool. They seem to be very high quality and have yet to show any signs of rust.
G**G
Great price, sort of works with Thule wingbars.
I'm only giving 4 stars because these pieces despite likely solving a problem, could have had a much better finishing job, and then I wouldn't have had to modify them. I'm also not able to review the strength of them, but they look solid. . I'm installing a ski/ roof box requiring 8mm thread T- bolts on Thule Wingbars bars. Thule Wingbars are made for T-bolts with smaller heads. The standard Thule is 6mm thread and I have not been able to find out if Thule even makes an 8mm version? So, I ordered these since I didn't want to modify the Roofbox factory 8mm T-bolts with heads too large for the Thule wingbars, keeping them stock in case I ever sell the ski/roofbox. I also wish these T-bolts came in other lengths, since I had to cut off about 10mm, to make them work for my application, but that's not a reason I only give it 4 stars. Reason for the 4 star review is that the base/head of these T-Bolts is just an unfinished stamped square piece of steel with a black finish on it. Head has sharp edges, and to make sure I don't damage the rubber seals/ trim. To make them easier to install, not jam when sliding in the track, I had to use my Dremel to carefully remove the sharp edges of the heads of the bolts. With beveled edges, they work way easier in the track too. I would gladly have paid twice as much, to not have to do this. Lastly, like others have noticed, the stainless steel used has a very light attraction to strong magnets. Because I had to remove metal, I was wondering if those areas might be prone to pitting/ corrosion, or if there is enough chrome in the 304 alloy to resist it. So after removing the sharp edges, I left the T-bolt in a light salt bath for 24hrs and it didn't create any visible rust stains. I still gave the pieces a hot oil bath, and I'm thinking they will be ok. Not have any rust issues to worry about.
M**Z
Fits Yakima Lock n Load
Stainless steel is the way to go on my Yakima lock n load roof rack.
A**R
Great product, used in Retrax T slots.
These are well made and stainless steel, checked with magnet, black color also, worked well, I would buy again.
D**N
great product
nice quality
B**T
Are these really stainless steel
These worked well for adding a wider platform for hauling 2 canoes on my Thule Trakrack truck rack. But are they really stainless steel? Photo is after about 2 weeks in use with Montana rain the only liquid they saw.. 304 isn’t the best grade for corrosion resistance but I am skeptical these are stainless at all. I’ll keep them but seller should consider changing their description.
W**M
Für die Unterkonstruktion eine Kanuhalters benötige ich eine zuverlässige verbindung in die Aufnahmeschiene meiner Thule-Traversen. Die hier vorliegenden Nutensteine sind hierfür genau richtig. Sie bieten ein ausreichend dimensioniertes M6-Gewinde, um auch durch 3cm MDF-Platte noch ausreichend Restgewinde für die Verschraubung vorzuhalten. Einziger Wehrmutstropfen: Die Aufnahmeplatten sind unten nicht abgekantet, das erschwert das Fädeln. Ich werde hier mit dem sSchleifer nachhelfen müssen. Abgfesehen davon: Top-Basis für ein Selbstbauprojekt. 4/5 Punkte Anmerkung: Das hier rezensierte Produkt wurde uns im Zuge des Amazon Vine-Programms kostenlos zur Verfügung gestellt. Dies hat keinen Einfluss auf meine Bewertung. Ich teste und bewerte nur Equipment mit Bezug zu unseren Hobbys oder beruflichen Tätigkeiten bzw. Dinge des täglichen Gebrauchs. Ich achte darauf, dass wir Vergleichsprodukte besitzen bzw. der Artikel einen konkreten Zweck für mich oder die Familienangehhörigen erfüllt, mit denen ich zusammenlebe.
D**B
I’m very happy with this T slot bolt accessory kit — it has worked perfectly for securing various gear attachments to my roof rack’s T-track system. Whether I’m mounting a bike rack, kayak rack, cargo basket, awning, or solar panel bracket, these bolts have been solid, reliable, and easy to use. The stainless steel construction feels durable and strong, and it’s reassuring to know these bolts are rust- and corrosion-resistant even in harsh weather conditions or salt-water environments. That quality gives me confidence that they’ll hold up over time for camping, touring, road trips, and other outdoor use. Installation was straightforward — the bolts simply slide into the T-track on my Thule-compatible cross bars, and they tighten securely with the included nuts and washers. Everything fit well and held tightly, so I haven’t had any loosening or movement once mounted, even on rough roads. One thing buyers should be aware of is that these bolts come in different sizes and configurations (e.g., M6 × 35 mm, M8 × 30 mm, M8 × 65 mm, various pack counts). It’s important to measure your carrier’s T-track dimensions or check manufacturer specs before ordering so you get the size that works with your roof rack system. Once you’ve selected the correct size, though, they fit perfectly and function exactly as intended. Pros: Works very well for attaching rack accessories securely Durable stainless steel that resists rust and corrosion Easy to install and tighten Great value for a multi-piece T-track bolt kit Cons: Make sure you pick the correct size for your specific carrier/T-track system; otherwise they might not fit properly Overall, this kit worked really well for my setup and has been dependable for all my rooftop gear mounts. Highly recommended for anyone with Thule, Yakima, Whispbar, Rhino, or other compatible T-track roof rack systems — just pay attention to the size you need before purchasing.
S**V
Qualität passt
A**H
Fits Yakima roof bars perfectly
B**S
Les articles sont bonne qualité , le diamètre est légèrement plus gros que celui de ma boîte à ski que j’ai pu agrandir facilement avec une mèche .
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