Description
Allen Gauge & Tool Co.
5691-L Lead Standard, 4 TPI, 2.00 TPF V-0.038R & V-0.050 & V-0.065
For API Full Hole 4”, 5½” & 6⅝” ; API Numbered Connections #23 – #50;
API Regular 6⅝” ; Double Streamline 3½” – 5½”; Hughes Slim Hole 2⅜” – 4½”;
Hughes Xtra Hole 2⅞” – 5”; Hughes External Flush 3½” – 4½”; Internal Flush 2⅜” – 6⅝” ;
Wide Open 2⅜” – 4½”
Lead Setting Standard
Allen Gauge & Tool Co. setting standards are hardened and precision ground to the API accuracy requirement of ± 0.0001″ between adjacent notches and ± 0.0002″ between nonadjacent notches. Standards for tapered threads are compensated for error in measuring lead parallel to the taper cone instead of parallel to the pipe axis.
Before using the lead gauge, it should be zeroed out with an Allen Lead Gauge Setting Standard (Template). The dial indicator should read zero when applied to the Setting Standard. If it does not, the sliding-beam lock screw should be loosened, the gauge adjusted to zero using the adjusting screw, and the lock screw tightened.
Setting standards for specific threads can be made.
Please furnish complete thread data and prints.
ISO 17025:2017 Accredited Laboratory, as an OEM we offer professional calibration services for all the gages that we manufacture.
*TPF = Taper Per Foot, TPI = Threads Per Inch
