"CONSISTS OF BLACK ANODIZED ALUMINUM PER MIL-A-8625,TYPE 11,CLASS 2; DIMS 1.420 IN. OUTSIDE DIA; 0.906 IN. INSIDE DIA; 0.375 IN. THICK; 96 DP DIAMOND KNURL; THREADED 0.127 IN. FROM BOTTOM WITH 32 UNS-2A THREADS WITH MAJOR DIA FROM 1.374 IN. TO 1.368 IN. AND NOMINAL MIN DIA 1.335 IN."