Rat 1 Screw Size: The Standard For Ontario Projects

The Ontario Rat 1 is a folding knife that uses Torx bits, specifically T6 and T8. The handle screws are wider than 2-56 but smaller than 4-40, and the pivot screws are likely to be between 3 and 4mm. The Ontario Rat 1 screw size is a topic of discussion among knife enthusiasts, as finding replacement screws can be challenging. Some sources suggest that the screws are metric, as the knives are made in Taiwan, and M2.5x.45 is a possible size.

Ontario Rat 1 Screw Size Characteristics

The handle screws are wider than 2-56 but smaller than 4-40

If you're looking for the handle screw size for an Ontario Rat 1 knife, it's important to note that the handle screws are wider than a 2-56 screw but smaller than a 4-40 screw. This information will help you narrow down the correct screw size for your knife.

To understand why this information is essential, let's take a closer look at screw sizes. The numbers "2-56" and "4-40" are standard designations for screw sizes, with the first number indicating the diameter and the second indicating the number of threads per inch (TPI). So, a 2-56 screw has a diameter of 0.086 inches, while a 4-40 screw is larger with a diameter of 0.112 inches.

Knowing that the handle screws on the Ontario Rat 1 are wider than 2-56 but smaller than 4-40 helps us estimate the correct size. Based on this information, we can assume that the handle screws have a diameter that falls between these two sizes. This knowledge will be useful when purchasing replacement screws or modifying your knife with custom scales.

In addition to the handle screw size, it's worth mentioning that the pivot screws on the Ontario Rat 1 also require attention. While their exact size may vary, they typically use Torx bits, specifically T8 and T6, as mentioned in the same source. It's always a good idea to have the correct tools and screws when working with knives to ensure a secure fit and avoid any damage.

The pivot is T8 and the handle is T6

The Ontario Rat 1 is a folding knife that uses Torx bits for its screws. Specifically, the pivot screw is a T8 Torx, and the handle screw is a T6 Torx. These screws can be purchased in a variety of colours, including gun metal gray and flat gray.

The handle screws are wider than 2-56 but smaller than 4-40. The exact size is unknown, but it is likely to be metric and could be M2.5x.45. The pivot screw is likely to be between 3 and 4mm.

Replacement screws for the Ontario Rat 1 can be purchased from various online retailers, including Amazon and eBay. It is important to note that the screws may not be compatible with all versions of the knife, as there are both Taiwanese-made and US-made versions.

The screws are likely to be metric

The Ontario Rat 1 knife is made in Taiwan, which means the screws are likely to be metric.

One user on BladeForums.com noted that the handle screws are wider than 2-56 but smaller than 4-40. They also stated that the pivot is T8 and the handle is T6. The user suggested that the screws are likely to be metric, with a possible size of M2.5x.45.

Another user on the same forum also suggested that the screws are likely to be metric, given that the knives are made in Taiwan. They provided measurements for different screw sizes, with a 2-56 screw having a diameter of .086", a 4-40 screw having a diameter of .112", and a 2.5mm screw having a diameter of .098".

Additionally, a user on Reddit measured the OD of the threads on their Ontario Rat knife and found it to be .075", or 1.91mm. They believed this put the screw size at an M2, but were unsure of the pitch. Bladeswelove, a company mentioned in the post, later confirmed that the correct screw size is M2.5.

There is also a set of gun metal gray screws for the Ontario Rat 1 knife available on Amazon. The product description mentions that these screws fit the genuine Taiwanese-made Rat 1 knife, further supporting the assumption that the screws are metric.

Bladeswelove states it's an M2.5 screw

If you're looking to modify your Ontario Rat 1 knife, you might be interested in knowing the screw size. The handle screws are wider than a 2-56 but smaller than a 4-40, and the pivot screws are T8 and T6 Torx bits.

Now, Bladeswelove states that it's an M2.5 screw. This is a metric screw size, which is likely given that the knives are made in Taiwan. The M2.5 screw size falls between 2-56 and 4-40, with a diameter of 0.098". To be more specific, the M2.5x.45 screw size is a strong possibility for the Ontario Rat 1 knife.

You can find replacement screws on Bladeswelove's eBay store, which offers a variety of knife parts and customisation options. Their store has positive reviews, with customers praising their outstanding customer service, fast shipping, and good communication.

Additionally, you can find a set of 15 gun metal gray stainless steel pivot, handle scale, and pocket clip screws for the Ontario Rat 1 knife on Amazon. These screws are also suitable for the genuine Taiwanese-made Rat 1 knives and are hard to find.

The pocket clip requires 2 long T6 Torx screws

The pocket clip on your Ontario Rat 1 knife requires two long T6 Torx screws for secure attachment. These screws are essential for ensuring the pocket clip functions as intended, allowing you to conveniently carry your knife.

When it comes to the specific screw type, the T6 Torx is characterised by its six-pointed star shape, which requires a specialised screwdriver for installation and removal. This unique design provides excellent torque transfer and resistance to cam-out, making it a popular choice for applications where secure fastening is crucial.

It is important to note that the correct screw length is critical for a successful installation. The "long" specification for the T6 Torx screws indicates that they are designed to accommodate the specific dimensions of the Ontario Rat 1 pocket clip and handle. Using screws of the incorrect length can lead to an insecure fit, potentially compromising the safety and functionality of your knife.

To purchase the correct screws, it is recommended to buy those specifically designed for the Ontario Rat 1 knife. This ensures compatibility and can help you avoid the hassle of trying to find generic screws that may or may not fit. Additionally, always follow the manufacturer's instructions or seek guidance from experienced individuals when modifying or repairing your knife.

Frequently asked questions