Alloy thread tester plate - Identify your grease nipple or oiler thread!
AN thread - Wikipedia
Russell Performance Technical Resources - Russell Performance
Understanding Performance Fittings - Straight and AN Threads vs. Tapered Thread - NASA Speed News Magazine
JIC-thead-AN-thread-drawing - SpeedflowSpeedflow
VIBRANT PERFORMANCE AN Thread O-Ring, Box Set Consisting of An -3, -4, -5, -6, -8, -10, -12, -16.
Complete Thread Terminology Guide
Audizine Forums
AN" vs. "NPT" Fittings and How They Relate
10AN AN10 Male to 7/8"-14 UNF (10AN Thread) O-Ring Boss Alloy Fittings Adapter | eBay
Understanding Fuel Line Fittings: Straight Thread (and AN) vs. Tapered Thread
Understanding Performance Fittings - Straight and AN Threads vs. Tapered Thread - NASA Speed News Magazine
How To Measure Fitting Threads in 3 Steps | MISUMI Mech Lab Blog
AN & NPT Thread Sizes Chart | Rorty
NPTF thread Fitting size chart | Metal working tools, Screws and bolts, Chart
mechanicsupport.com: AN Thread Size and AN Fitting Size Chart
AN vs SAE vs NPT thread for different fittings - QC Hydraulics
jic-thread-Identification - SpeedflowSpeedflow
Tech Tip: Thread Size Chart for AN Fittings
Aeromotive Fuel Systems - AN vs NPT vs ORB – what's the difference? AN (army/navy) fittings have straight threads and seal using a SAE 37-degree flare. NPT (national pipe thread) means it
Better mm threads from inch leadscrew - The Warco WM180 Lathe - Modifications
Fragola 20mm-1.5 Thread To AN -10 Black Anodized Aluminum AN Metric Adapter Fittings - Kartek Off-Road
UNF vs. NPT: A Comprehensive Guide to Hydraulic Hose Fittings - Hydraxio: China SS Hydraulic Fittings Manufacturer & Supplier