How to use Industrial& Hydraulic Fitting Thread Identifier
- Enter Thread gender and adjust the options as needed.
- Run the tool and inspect its results, evidence and limitations.
- Copy or download the result, then verify it against the actual website, source data or business records.
Try a concrete example
With male OD 19.05 mm, 16 TPI and parallel profile, the matcher recommends SAE J514 JIC 3/4-16 (-08) 37° flare fitting (0.05mm deviation, 99.7% confidence).
How to interpret results
Contains SAE, BS, DIN and ISO hydraulic thread databases with tolerance scoring, sealing profile diagrams and assembly torque recommendations.
Frequently asked questions
How to accurately measure unknown fittings with calipers and pitch gauges?
Measure male crests for major OD; measure female thread crests for minor ID. Fit a pitch gauge against threads until light does not leak through to read TPI or mm pitch.
What is the key difference between BSPP (G) and NPT threads? Can they be interchanged?
Never interchange them! NPT is 60° tapered pipe thread (1:16 taper sealing on threads); BSPP (G) is 55° parallel thread sealing on an O-ring or bonded washer. Forcing them together risks thread stripping and high-pressure blowouts.
What is a JIC 37° fitting, and what does the Dash size mean?
JIC follows SAE J514 with UN/UNF straight threads and a 37° flared metal cone seat. Dash sizes designate sixteenths of an inch (-08 is 8/16" or 1/2" hose with 3/4-16 UNF threads).
How to distinguish Metric DIN 2353 Light (L) and Heavy (S) series fittings?
DIN 2353 / ISO 8434-1 uses metric 24° bite-type fittings. Light (L, 160~315 bar) and Heavy (S, 400~630 bar) series differ in wall thickness and thread size: 12L uses M18×1.5 while 12S uses M20×1.5.
How is the matching confidence percentage calculated?
The algorithm calculates deviation between measured diameter and nominal major/minor dimensions with heavy penalties on pitch and taper mismatches. Above 95% and within ±0.3mm denotes high confidence.