T-SH6MS20V - M6 x 1.0 Vacuum-Compatible Vented Cap Screw, A4 Stainless Steel, 20 mm Long, 5 Pack product-series_lynx-2-splice-on-connectors it is a flint glass

it is a flint glass that offers excellent performance in the visible and NIR spectral range

AFL NOYES FC adapter

Wide temperature range

High Temperature Cure

3/4" x 60' 598X475  8-Way COAX Tester Set 686X800  Mini Maglite AA Flashlight 750X500  F-F Coax Cable Adapter (10) 893X005  2-Way Coax Splitter (2) 893X010  RG59 Shield Coax Cable

T-SH6MS20V - M6 x 1.0 Vacuum-Compatible Vented Cap Screw, A4 Stainless Steel, 20 mm Long, 5 Pack product-series_lynx-2-splice-on-connectors it is a flint glassT SH6MS20V M6 x 1. 0 Vacuum Compatible Vented Cap Screw, A4 Stainless Steel, 20 mm Long, 5 Pack Vented 8 32, M4 x 0. 7, 1 4" 20, or M6 x 1. 0 Cap Screws and Setscrews Vacuum Compatible Thumbscrews All Components Usable with 10 6 Torr Environments Directly Out of the Packaging Compatible with Lower Pressures with Additional User Processing All Components are Shipped Double Vacuum Bagged for Cleanroom Use Thread Length 20 mm (0. 79") Hex 5 mm Vent Hole