How Much Rotation Angle is Needed to Tighten a Fastener?
Hint: not as much as you think. To answer this question, let’s start with an example of a fastener assembly with a 3/4" x 10 Grade 5 bolt and nut and a 2” clamp distance, as shown in figure 1. Figure 1 For
How Much Does a Bolt Stretch?
Answer: a very small but important amount. In previous posts we discussed how a bolted joint works, how clamp force is calculated, and how to determine torque required to achieve the clamp force. This month we’ll present more details about the
Bolted Joint Torque Explanation and Calculation
We are often asked what torque value should be used with a specific nut/bolt assembly. First, it’s helpful to understand that torque is a rotational force that is equal to a linear force times the distance of that force from
How is Clamp Force for a Bolt and Nut Assembly Calculated?
Clamp force is what holds a bolted joint together. Published charts are available for determining clamp force but we’ve found it’s often useful to understand how these numbers are calculated. Image from smartbolts.com Bolt and nut ratings can be confusing. Bolts are
How Does a Bolted Joint Work?
A standard bolted joint consists of four parts: a fastener, object A, object B, and a bolt. The threads on a nut, unraveled, are an inclined plane that uses leverage to do work. The force of friction keeps the nut from
Security Locknut at SAG
Thank you to everyone at SAG for a fantastic five days in Vancouver! It was an honor to meet the who’s who from the Semi-Autogenous & High Pressure Grinding Industry and share such wealth of knowledge with the industry’s finest! We
The Railway Recap
We’ve just got back from three awesome days of the Railway Interchange Tradeshow at the Minneapolis Convention Center. It was a great opportunity to speak to many professionals about the industry and about our company. We met with some current
Charity Auction Update
Congratulations to our high bidder, Rick Semenick from HDR Inc. He took home a custom table from Rail Yards Studios. And thank you to everyone who participated in our Charity Auction event at the recent Railway Interchange Trade Show in Minneapolis. You
Come See Us in Minneapolis!
Let’s lock in a time to meet at the Railway Interchange Trade Show! We can talk about solutions for your bolted-joint applications, made by the most durable locknuts in the business. We’re based in suburban Chicago and we manufacture all
Security Locknut Expands International Business to Australia
Security Locknut expands their existing international business by receiving approval for the use of their locknuts on two Class 1 railroads in Australia.