US Shoulder Bolt Sizes mm 10 20 30 40 50 60 70 80 90 100 110 120 130 140 150 160 170 180 190. Title: US- size - chart - shoulder - bolt Created Date: 2/16/2017 PM The shoulder diameter is the basis for the determination and callout of the screw size . 2. Screw threads are Class 4g6g. 3. Concentricity: The shoulder and thread pitch diameter shall be concentric within 0.10 mm full indicator movement (FIM), determined at a distance of 4.75 mm from the face of the shoulder . Length Shoulder bolt size is determined by the diameter and length of the shoulder. 12mm 16mm 6mm 5mm 4mm 8mm 10mm 20mm . 10mm x 1.5 Thread 12mm x 1.75 Thread 5mm x 0.8 Thread 4mm x 0.7 Thread 3mm x 0.5 Thread 6mm x 1.0 Thread 8mm x 1.25 Thread 16mm x 2.0 Thread.
The shoulder is precisely sized and is between -0.002 and -0.004 of the nominal size . So, for a 1/2 (0.5000) shoulder bolt , the shoulder diameter will be 0.498 maximum to 0.496 minimum. Shoulder bolts have a hex socket head so tighten using a hex driver. ISO 7379 Specifications for Shoulder Bolts . ISO 7379 Specifications for Shoulder Bolts . All measurements in millimeters (mm) d1 Nom.- Body to thread pitch diameter within 0.1 TIR when checked at a distance of 5.0 C from the shoulder at the threaded end. Squareness, concentricity, parallelism, and bow of body to thread pitch diameter shall be within 0.05 TIR per centimeter of body length with a maximum of 0.5 when seated against the shoulder in a threaded bushing and checked on the body at a distance of 2.5 “B” from the underside of the head.
Sockets Socket Shoulder Screws Alloy Steel Description A hex socket head screw with an enlarged, unthreaded, cylindrical shoulder under the head, the diameter of which serves as the basis for the derivation of the nominal size . Applications/ Advantages For rotation or sliding applications, such as pulley shafts, in punch and die work, or for use as a bearing pin. Shoulder Screw Operation Shoulder Screw Production Thread Standards Applications Resources Like other screws, shoulder screws are meant to hold objects togetherand in position. However, they do not have a tapered shank, so they do not self-thread into soft materials. They are used in instances where pre-tapped holesrequire alignmentwith some tolerance. This allows the workpieces either a joint, pivot, or slidingmotion. These screws are available in metric and imperial units.Shoulder screws have three sections: head, shoulder, and thread.The head is the largest diameter sectio. See more here [PDF] Unbrako Engineering Guide here/images/downloads/engguide.pdf shoulder screws , dowel pins, pressure plugs and hex keys. Everything you need to select, specify and order these precision products is at your finger tips except actual prices. Precision-grade shoulder diameters have a tolerance of 0.0005 to 0.0015 in. below the nominal size for inch-size screws and 0.013 to 0.038 mm below nominal for metric sizes .