Amazon.com: Pysrych 304 Stainless Steel Compression Fitting 3/8" Tube OD x 1/4" NPT Male Coupler Straight Adapter Connect with Double Ferrules Pack of 2 : Industrial & Scientific
316 Stainless Steel, 2 1/2 in x 2 in Fitting Pipe Size, Adapter - 30WA69|32-2 F5OG-SS - Grainger
NW16 to 1/8" NPT, Male, Stainless Steel Vacuum Fitting
1/2" OD Tube Stub x 1/2" Male NPT Adapter Stainless Steel 316 | ShopHFS
2" Tri Clamp to 1/2" Female NPT Adapter, Stainless Steel SS304 – Affordable Distillery Equipment
304 Stainless Steel, 1/8 in x 1/8 in Fitting Pipe Size, Adapter - 60VF11|ZUSA-PF-7834 - Grainger
Amazon.com: JENSWILL 20mm/0.78" Length Extension Pipe Arm Stainless Steel G 1/2 Male to G 1/2 Female Thread Adapter Cast Pipe Fitting Coupler for Shower Head Arm : Industrial & Scientific