Not recommended for use with Stud Ejector Springs. Use 2600-SW. Maximum Service Temperatures: Stainless Maximum Service Temperatures: Stainless Steel—700°F; Steel and Bryllium Copper—450°F. Retaining Rings (for 2600/2700 Series) The International Federation for Structural Concrete [ 26] suggests the following equation to calculate the peak slip of welded stud connectors:

Shear strength comparison between the equation prediction and the test value. 4.2. Evaluation of Shear Stiffness Snap retaining ring under cross pin using needle nose pliers, then rotate retaining ring 180° until RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO Seal of Approval if we’re confident of their exceptional quality, which means you can be confident too.In this paper, push-out tests are implemented on four groups of welded stud connector specimens, including conventional and high strength 22 mm stud connector specimens and 25 mm and 30 mm stud connector specimens. The shear strength of these welded stud connectors is investigated and compared with the prediction of the design equations recommended in AASHTO LRFD [ 19], EN 1994-1-1 [ 18], and GB. The shear stiffness and ductility of these welded stud connectors are also examined and compared with the estimation by the existing equations. In addition, the applicability of load-slip relationships for conventional stud connectors to large diameter and high strength stud connectors is also discussed. 2. Experimental Work 2.1. Push-Out Specimens Lin et al. [ 24] proposed a semi-theoretical equation for predicting the shear stiffness of normal stud connectors based on the theory of a beam on an elastic foundation and ninety-nine test results collected from the available literature, as shown in the following equation: turn fasteners are qualified to MIL-F-5591* specifications. Also included are receptacles for fast installation, or Ultimate tensile strength: 300 lbs. Working strength: 200 lbs. Stud grip increments: .030 inch. For other styles,

EN 1994-1-1 [ 18] specifies the design strength of one stud connector given by the following equation: where is the diameter of the stud shank (mm), which is specified between 16 mm and 25 mm, is equal to 1.0 when the overall stud height is larger than four times of its diameter, the tensile strength of the stud material is specified no greater than 500 MPa according to EN 1994-1-1 [ 18], the recommended value for the partial factor is 1.25, and other variables have the same meaning with Equation ( 1). Shear stiffness comparison between the equation prediction and the test value. 4.3. Evaluation of Peak Slip Previous researchers have proposed various definitions for the shear stiffness prediction of welded stud connectors. Oehlers and Coughlan [ 2] proposed an empirical equation to calculate the initial shear stiffness of normal stud connectors based on the experimental results, as shown in Equation ( 4). It is adopted by Shim et al. [ 16] to evaluate the shear stiffness of large diameter studs, and the results show that Equation ( 4) gives rather conservative predictions: Shear stiffness and peak slip distribution for four groups of push-out specimens. 4. Evaluation of the Push-Out Test Results 4.1. Evaluation of Shear Strength In Equations ( 6) and ( 7), is the cylinder compressive strength of concrete which is equal to 59.8 MPa and stands for the diameter of the stud shank (mm).

Push-to-Close, Turn-to-Open

In Equations ( 4) and ( 5), represents the initial shear stiffness of welded stud connectors defined as the ratio of half of the shear strength to the corresponding slip (N/mm); is the shear strength of welded stud connectors (N); is the cylinder compressive strength of concrete (MPa), which could be taken as 59.8 MPa based on the relationship between the cylinder compressive strength and the cube compressive strength proposed by Mansur and Islam [ 25]; is the diameter of the stud shank (mm); stands for the elastic modulus of concrete (MPa), which could be regarded as 37.6 GPa predicted by proposed by EN 1992-1-1; and is the elastic modulus of the stud material (MPa) which is equal to 2.0 × 10 5 MPa. Much earlier, Buttry [ 27] put forward a fractional formula for the load-slip curve of conventional welded stud connectors: Calculation: “G” + .038 = .163 + .038 = .201 Stud Dash Number Selected From Table: -6 Complete Part Number: 2600-6S Stud Dash Number

Drill, counterbore, and then tap thread in structure using data from table below. Turn KEENSERTS Insert into tapped hole Steel—700°F.; all others—450°F. Retaining Ring Installation Tool T98-1(For use with Solid Rings Only) Note: If float is required, all dash lengths require retaining rings as described in “Float” above.Working strength: 200 lbs *Meets the design, physical and performance requirements of MIL- F-5591. However, Then remove insert with an E-Z out type tool. An identical insert can now be installed in the original hole without