TurnaSure's legacy company invented this brilliant concept of bolting technology. ... Valley Forge & Bolt ’s (Phoenix, AZ) family of load-indicating fasteners makes it possible to monitor bolted joints after installation and to always know fastener tension regardless of the service interval. Load Indicating Fasteners Maxbolt Load Indicating Fastener Maxbolt load indicating fasteners continuously displays the amount of tension in a bolt or stud. As the load indicator fastener is stretched, the cap locks at the specified tension value. This load-indicating fastener technology is available with the Maxbolt ™ Load Indicating Fasteners and the SPC4 ™ Load Indicating System. They offer a simple method for accurate joint assembly, and it is the only product available (for most applications) that will continuously clamping force while the fastener is in service. Co., can revolutionize how a company looks at fasteners by reducing downtime, premature wear, and catastrophic joint failures. Users can monitor the clamp load of any SPC4TM bolted joint whether static or dynamic, by attaching an indicator datum disc located on the end of the fastener and reading the value with a user friendly mechanical indicator. 1.1 This specification covers externally threaded bolts, studs, and cap screws as defined in Table 1, herein called fasteners, capable of indicating clamping forces up to yield strength during the tightening process or post installation residual tension, or both.Load-indicating fasteners utilize mechanical, electronic, or ultrasonic means to indicate fastener tension. ... Now a nut that confirms that bolt load is achieved Speeds assembly time at connection Quicker tensioning - less torque Eliminates assembly errors Eliminates need to control lubricity The TurnAnut “All-in-one” DTI. Valley Forge & Bolt is shifting the paradigm with SPC4™ Load-Indicating Technology that makes it possible to measure the actual tension in a fastener, not just … As each of the first four bolts is brought up to the desired load, record the amount of torque required for each bolt and compute an average torque value. of Pages 22. The Load Indicating Washer was invented in England in 1962. Load Indicator Washers Standard AS/NZS 1252, Load indicator washers is a direct tension indicator, Used in the installation of High Strength Structural Bolts, Load Indicator Washer has protrusions on one face, To use insert between the bolt head and he gripped material with the protrusions bearing against the bolt head leaving a gap. The bolt load change due to service load will depend mainly upon the relative stiffness between the bolt and the bolted member, as well as other variables. There are two main types of bolted joint designs: tension joints and shear joints. The system offers a simple method for accurate joint assembly and is the only product available, for most applications, which will continually monitor clamping force while the … For indicating when the tension in a bolt reaches a predetermined value, there is provided an electrical contact (24) which is held in a position adjacent to an axially facing surface (20) of the bolt and in a fixed position relative to a remote part of the bolt. Some businesses have gotten used to replacing more than a dozen broken bolts each day but it doesn’t have to be this way. PN. High Tensile Metric PC8.8 Bolts - Coarse ... Load Indicating Washers - Metric - Hot Dipped Galvanised - ASTM F959M - UN0047. History. TurnaSure manufactures simple washer-type load cells known as Direct Tension Indicators or Load Indicating Washers. Determination of service or external loads in a bolted joint by means of preloaded load sensing bolts is not recommended. Each fastener tells indicates its percentage of minimum yield on a 0-to-100 scale, using either a built-in meter (Maxbolt) or, in the case of bolts with SPC4 technology, using quick-connect meters or wireless sensors to provide a precise measure of the load. Yielding, which is an inelastic deformation (above left) 2. Also know as a Direct Tension Indicator washer (DTI) The purpose of this washer is to show that a defined preload is achieved in the bolting assembly. Security Claself. Tension Indicating Fasteners for bolts, anchors and studs. However, when a bolt is tightened against a material, it allows the bolt to distribute the force through the material, so the bolt itself only holds a portion of the load.This means that a bolt can hold a significantly higher load when the correct amount of tension is applied. load-indicating bolt A special type of high-strength bolt having a small projection which compresses as the bolt is tightened; the amount of projection can be measured with a feeler gauge, thereby acting as a measure of the bolt tension. Load-Indicating Fasteners. With DTIs, the proper gap is verified by a “go/no go” feeler gauge. Load Indicating Washers Metric Hot Dipped Galvanised ASTM F959M. Part 10: System HRC – Bolt and nut assemblies with calibrated preload; Direct tension indicators (DTI) are equivalent to ‘load indicating washers’ and system HRC is effectively the same as Tension Control Bolts (TCBs). Our patented bolting products are trusted for their quality, performance and reliability. Bolted joints are one of the most common elements in construction and machine design. Bolt, Bridges, Connection, Fasteners, Load-indicating Unlimited wtth approval of the Washers, Steel Kentucky Transportation Cabinet 19. Metric PC4.6 Cup Head Bolts & Nuts Metric PC4.6 Coach Screws BSW G2 Cup Head Bolts & Nuts. ... Each reader displays bolt load (joint clamp load) as a percentage of its proof or yield load (customer choice). ASTM F959 Type A325 washers are designed for use with A325 structural screws, studs, and nuts and are … (of this repo ) 20, Security Closslf. Load indicating washers have been around since the early 60s and are highly accurate load cell washers with raised protrusions that collapse to a specified gap as the bolt is tensioned/tightened. How a company looks at fasteners by reducing downtime, premature wear, and catastrophic joint failures due... Critical joints is a matter of safety, peak performance, and joint... 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