SMA Female Field Replaceable Connector 4-Hole Flange,8.6mm Hole Spacin – Gwave Technology Inc
Replacement T-pin for hole punch, nickel-plated steel, (1) 2-3/8x1-1/8x1/4 inch T-shaped 1.5mm pin and (1) 2-3/8x1-1/8x1/4 inch T-shaped 2mm pin. Sold per pkg of 2. - Fire Mountain Gems and Beads
High Temperature 1/2.7" 4-20mm F4.0 Megapixel 2MP CS Varifocal Pinhole Lens Zoom Lens High Temperature Metallurgical Lens Industrial Pinhole Lens
Single Hole Clevis Pins - 4mm x 30mm Flat Head 304 Stainless Steel Link Hinge Pin 10 Pcs - Walmart.com
Marshall Electronics VZPL06 4mm to 20mm f/2.5 Vari-Focal
Weldex WDH-3200CC 1/4 Color Ultra Mini Covert Camera with Fixed 3.6mm Conical Pinhole Lens
CCL13028PMMPR2 CS pinhole lens for metallurgy - TowinLens