Nelson Fastener Systems Internally Threaded Stud TBL

Nelson’s internally threaded metric TBL studs are intended to be used on heavy base materials and serve as a means of attaching or anchoring components to a structure. When maximizing the stud diameter to tap ratio, the stud can also serve as a stand off post. Standard TBL studs have internal UNC-2B coarse series threads. Internally tapped studs can also be supplied with UNF-2B fine threads. Studs with fine threads are called PBL studs, rather than TBL studs. The “D” dimension on fine threads is approximately 15 – 20 % less than for course threads. The “S” dimension is predicated on stud diameter, not tap size. Secondary bottom tapping or flat bottom drilling is available as a special order with significant price additions. Reduced base studs are available but depth of tap drill point should not pass below shoulder of reduced diameter shoulder so that stud strength is not compromised

Nelson’s internally threaded metric TBL studs are intended to be used on heavy base materials and serve as a means of attaching or anchoring components to a structure. When maximizing the stud diameter to tap ratio, the stud can also serve as a stand off post. Standard TBL studs have internal metric ISO 6g threads. The “D” dimension on fine threads is approximately 15 – 20 % less than for course threads. The “E” dimension is predicated on stud diameter, not tap size. Secondary bottom tapping or flat bottom drilling is available as a special order with significant price additions. Reduced base studs are available but depth of tap drill point should not pass below shoulder of reduced diameter shoulder so that stud strength is not compromised