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The pinch bolt is an aerospace grade fastener engineered to keep parts together under impact and vibration. At the proper torque, the pinch bolt provides enough resistance to prevent unintended loosening of the fastener. During development of the Powerstrike hammer, this joint was tested with a dynamometer. The result is the strongest head to handle connection in the industry. Although our testing shows that this fastener can be used without thread locking compound or a star washer, some of our customers choose to install one. If it helps your piece of mind, by all means use a little Loctite on the threads. Be sure to torque the bolt to the recommended torque spec of 30 ft/lbs.
How do I choose which strike face is right for me? Most of our customers who work regularly as a professional framer choose the radial texture steel DART face. This face grips nails well, but isn’t ideal for finish or small nails. Some of our customers choose the smooth steel DART face and deliberately introduce a texture by hammering some coarse sand paper or concrete.
Don’t Titanium hammers chip and break? For the most part Titanium hammers are surprisingly good - given the inherent compromise of the design material. Most of us here at Powerstrike used a Titanium hammer before we decided to make a better hammer. And most of our customers buy a Powerstrikes to replace their expensive Titanium hammers. While Titanium is excellent for driving soft, common nails, it can be permanently damaged by using it on hardened fasteners or steel components – usually a manufacturer’s website will include the warranty restrictions. Ultimately, single piece heads (of any material) are always a compromise and the claws do sometimes break – that’s why the Powerstrike is made with replaceable parts.
But I love my hammer, why should I buy a new one? Honestly, if you love your hammer, don’t buy a Powerstrike just to have another hammer (unless you’re a hammer aficionado – then you’ll want one just because it’s the most advanced hammer money can buy). A hammer is such a personal thing that if you’ve found your true love, you should keep it. That said, keep us in mind if your hammer ever breaks or if you start feeling the symptoms of tendonitis in your elbow. And one more thing, don’t ever, ever borrow one from somebody – once you’ve swung a Powerstrike, it’s hard to imagine anything else.
Powerstrike Hammer by Powerstrike Precision Technology.
Why do you need all those parts? Each part is precision engineered with no compromises to do its job. The nail pulling claw assembly is made from 17-4 Stainless Steel, it’s 60% stronger than Titanium for the same weight. Similarly, the strike faces are specifically designed for their function. The DART (Dynamic Action Rebound Technology) delivers more energy to the nail than any solid strike face possibly could.
Powerstrike Hammer FAQ.
How does a lighter hammer hit with the same force? It seems counter intuitive, but it’s a pretty well known feature of these high-quality hammers. There are two different properties at work here. The first is simple physics. Kinetic energy is described by the equation E= ½ xmv^2. This means that if you increase the mass of a moving body, the energy increases proportionally. But, if you increase the velocity of the moving body, the energy increases as the square of the velocity. So, if you can trade mass for velocity, you get more kinetic energy. In effect, the lighter hammer swings the head faster and delivers more energy to the nail. While some hammers use the deformable properties of Titanium, the Powerstrike hammer uses an active mechanism to create efficiency. The patented Bullseye DART (Dynamic Action Rebound Technology) uses a ‘trampoline effect’ to transfer even more energy to the nail. As the striking face contacts the nail, the surface deforms like a trampoline (hence the name of the effect). Then as the hammer comes to a stop, the face returns to it’s original shape and “pushes” the nail down with the last bit of energy in the swing. The benefit to the trampoline effect is an additional 30% more energy transferred to the nail, and thus a more powerful hammer.
What is the Powerstrike warranty? The Powerstrike hammer is the ONLY hammer sold today with a true lifetime warranty. If an original part fails, send it to us and we’ll send you a replacement. If you don’t want to wait for your replacement part, for a $20 expidite fee, we’ll send you the replacement part and a return label to ship it back to us. There is, however, one exception. Titanium striking faces are NOT covered by our lifetime warranty. Titanium striking faces should only be used on common, unhardened nails. Wear and chipping from hammering anything other than common nails (hardened masonry nails, brick, etc.) is not covered by warranty.
How does the claw assembly attach without wiggling? On the end of the monocoque Aluminum handle, there is a precision machined interface. This part fits into a matching, precision machined slot in the claw assembly. The parts are designed with a tolerance of two thousandths of an inch. Once the handle is fully seated into the claw assembly, there is very little play (although there can be some). At the proper torque, the pinch bolt actually deforms the sides Stainless Steel claw assembly and locks the handle and claw assembly into a single unit. How do you keep the pinch bolt from getting loose?
Aren’t one piece hammers better? Isn’t any joint between the head and handle problematic? Yes and no. One piece hammers (and there are a lot of them) have several problems. First, they’re usually designed for high-volume, low-cost manufacturing so the primary design consideration is that they be easy to make so their very nature is a compromise since the ideal characteristics for a hammer head and the ideal characteristics for a hammer handle are different. Even with two piece hammers, the single piece head is a compromise since the ideal characteristics for striking and prying are different. If the claws are sufficiently strong to pull nails, the striking face is too hard to drive nails efficiently. If the head is designed for the correct impact to drive nails, the claws can be brittle and break when pulling nails. But probably the greatest sin of the one piece hammer is that it can’t be repaired. When they break, you have to throw them away and buy a whole new hammer. Here at Powerstrike, we’ve never met a hammer that couldn’t be broken – professional framers are a tough bunch. So our design philosophy is to make a tool that uses the ideal materials and design for each part but one that can also be repaired at the job site, by the user. It’s like immediately getting a factory refurbished hammer, without involving the factory.
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What size wrench do I need to replace the head or handle? The pinch bolt uses a 7/16” hex and the pinch nut is a 9/16”. The nut is below the surface of the swing weight so you’ll need a socket to hold the nut. Heavy duty sockets sometimes have an OD that’s too large to fit inside the swing weight, so we recommend a 3/8” drive. Can you help me convince my spouse that I should buy this? We understand. Perhaps the best advice we can give is “buy once, cry once”. Technological superiority is expensive. However, if you factor the cost of an injury due to repetitive stress, or simply the efficiency gains of a superior tool, the cost is small in the long run.

How does the Powerstrike reduce tendonitis (Carpenter’s Elbow) injuries? Repetitive motion injuries like tendonitis can be caused by many factors. It’s worth examining some of these factors individually. One factor is simply the weight of the hammer itself. Swinging a heavy hammer puts more stress on the muscles, ligaments and tendons of the arm. Overstressing the arm can cause inflammation in the joints and connective tissue. Switching to a lighter hammer such as a Powerstrike can help. A second contributing factor is the initial shock from impact with the fastener. With a traditional hammer this impact and subsequent recoil of the head causes a shockwave to travel through the hammer handle into the users forearm. The shockwave jars the muscles and tendons which can lead to inflammation. A third and often overlooked factor is the natural resonance of most solid hammer handles. These handles naturally resonate between 6 and 8 cycles per second (6-8 Hertz, or Hz). This resonant vibration can be transmitted to the arm and often contributes to tendonitis. The Powerstrike hammer is far lighter than other hammers thereby reducing the simple stress of just swinging the hammer itself. The effect of the Dynamic Action Rebound Technology combined with the monocoque Aluminum handle significantly reduces the vibration of the hammer itself. The striking face deforms slightly at impact then recovers to deliver all the energy to the nail. This initial deformation reduces the initial shock from impact far more than simply using a deformable material. Finally, the Aluminum handle is designed to avoid vibrations in the 6-8 Hz range, instead it vibrates with much less intensity at a higher frequency. In fact, the natural resonance frequency is tuned such that it’s easily dampened by the skin in the hand. Tendon inflammation is a significant concern for hammer users. This pain can occur while using a hammer, hours later or even days after a project is finished. If you develop pain in the arm, forearm or hands, please consult your doctor right away. The sooner you can identify the issue and change equipment or alter work habits, the less likely you are to have complications.
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