For many shooters the simple mention of “T-15” brings fond recollections of self-installed scopes successfully on their favorite tack driver they’ve used out in the field or at the range. To others, the thought brings back nightmares of stripped rings and receivers, slipping scopes, crushed tubes, and other avoidable installation incidents. More often than not, these mistakes and the subsequent nightmares were the result of improper application of torque.
Whether it brings fond memories or scarring nightmares for you, the Torx T-15 screw remains a standard fixture (pun intended) among modern scope mounts, so learning to deal with them will serve you well.
Warne Scope Mounts is well known for manufacturing a variety of high-quality, USA-born optics mounts, all of which employ those T-15 Torx head screws. Like most high-end mount manufacturers, Warne holds a recommended max torque specification across all of their ring and base screws — 25-inch/pounds, to be precise.
Warne loyalists take note; the TW1 Scope Mount Torque Wrench (above) is a small, lightweight, T-handle wrench with just the specifications you need — a permanent T-15 Torx bit pre-set for 25-inch/pounds.
The wrench’s plastic shell might be a giveaway that, like the TW65 wrench, it’s manufactured in China for Warne by California Torque Products. However, the shape and size of the handle make it very comfortable and easy to operate. The T-15 bit is of great quality and fits Warne’s screws perfectly.
If you’re mounting a scope base to a receiver, it’s important to note that the TW1 should only be employed with a steel receiver as host. The wrench’s 25-inch/pounds of torque could strip the threads on an aluminum receiver.
My very first TTAG review was on the Warne 45° Side Mount (above). The mount has seen quite a bit of use over the years without fail. Now, in the midst of a series of upgrades to an AR, I had the TW1 wrench in hand for the build.
This wrench, like most torque wrenches, shouldn’t be used to loosen screws so I used the T-15 bit on Warne’s RT-1 Range Tool (above, background) to remove the mount. When it was time for re-installation, I added the recommended pinhead-size dot of blue (non-permanent) thread locker to the screw before grabbing the TW1.
Once snugged to the Pic rail, the TW1’s T-15 bit engaged the screw head with solid lock-up and torqued the screw towards the appropriate 25-inch/pound setting. As the wrench met its limit, it smoothly rolled-over and broke away cleanly.
To confirm the TW1’s torque limit, I used the standard mathematical and mass DIY test. Although slightly tricky due to its short, rounded handle, the torque wrench performed within its specifications.
Warne’s TW1 is a compact, lightweight, fixed 25-inch/pound torque wrench with a permanent T-15 Torx bit. It may be slightly overpriced for a Chinese-made single-spec wrench, but it performs well and works flawlessly with Warne mounts. This tool surely isn’t for everyone, but if paired with the TW65 it’s just about all Warne (and many other brands) mount users will need in their range bag or at the workbench.
Specifications: Warne TW1 Torque Wrench (T-15, 25 in/lbs.)
Price as reviewed: $24.99 MSRP
- Preset at 25 in/lbs.
- Bit: Torx T-15
- Dimensions: 3.5″ x 3.5″ x 1.125″
- Warranty: Life of product
Ratings (out of five stars):
Design: * * * *
Warne’s TW1 torque wrench couldn’t be a simpler, easier to operate tool. Maximum torque is set at 25-inch/pounds and the T-15 Torx bit is permanent. At 3.5″x3.5″x1.125″, it will surely fit into any pocket, drawer, or range bag — plus, it weighs almost nothing.
Quality: * * * *
Unlike Warne’s mounts, the TW1 is made overseas and the difference in quality is somewhat incongruous. However, the TW1 is still well-made, performs consistently well, and is backed by Warne’s “life of the tool” lifetime warranty.
Ease of Use: * * * * *
The TW1’s contoured handle fits comfortably in the palm of your hand and makes operation painless. Stick it in, turn it slowly until it brakes-over, and you’re done.
Overall: * * * *
If you’re looking for a dedicated 25-inch/pound t-handle torque wrench with a T-15 bit, the Warne TW1 is a simple, compact, and lightweight option that is perfect for any range bag.