Page 504 - 2019 PRODUCT TECHNICAL MANUAL - HYDRAULICS V4-8

TECHNICAL
THREAD AND CONNECTOR IDENTIFICATION
HOW TO USE THIS SECTION
This section is intended as an aid to identifying the most popular threads on hydraulic hose couplings and adaptors, and hydraulic equipment.
BSP, Metric, American and Japanese thread sizes can be very similar. It is important to measure and match every criteria of thread diameter, thread pitch, seating or sealing type (including angle of seats if present) to accurately determine thread type.
PROCEDURE
STEP 1. INVESTIGATION
Check for any markings on fitting or equipment which may be a clue to thread type. Country of origin may provide a clue.
THREAD ID MATE
THREAD IDENTIFICATION AT YOUR FINGERTIPS
The RYCO Thread ID Mate application enables you to identify hydraulic threads and connectors everywhere you go.
The intuitive and simple identification process will help you find detailed information about threads specifications, sizes and more.
The RYCO Thread ID Mate also includes multiple search methods.
The Thread ID Mate app is available for your Android smartphone, iPhone/iPod Touch. Thread identification you can keep in your pocket!
Find out more at www.RYCO.com. au
Europe UK/Australia America Japan
Check DIN/BSP
Check BSP
Check NPT/JIC/UNO/ORFS Check JIS
All RYCO parts have a unique part number stamped on to aid identification.
STEP 2. VISUAL INSPECTION
Depending on whether the male or female thread or both are available, different features will aid identification.
• Are threads parallel or tapered?
• Is there an O Ring or a washer seal?
• If cone seats are present, are they concave or convex?
• Type and position on fittings.
STEP 3. MEASURE THREADS
With a caliper, measure the thread diameter.
• OD of male threads
• ID of female threads
Using a thread gauge, determine the number of threads per inch.
If thread gauge is not available, measure pitch from crest to crest of adjacent threads, or count the number of threads in 1/4” and multiply by four for threads per inch. Chart at bottom of page may assist.
STEP 4. SEAT ANGLE MEASUREMENT
Using a seat gauge, determine the angle of the seat. Some fittings have dual seats (eg. JIC 37° & SAE 45°), and some have a radiused cone.
STEP 5. CONCLUSION
Match the measurements taken against those in the tables herein that appear to be similar to the coupling under consideration.
A final check can be achieved by mating with an actual coupling of the same thread.
ID INSIDE DIAMETER
THREAD GAUGE
SEAT GUAGE
OD OUTSIDE DIAMETER
TPI (Threads Per Inch)
Thread PITCH (mm)
28 0,91
27 0,94
24 1,06
20 19 18 16 14 12 1,27 1,34 1,4 1,59 1,81 2,12
11.5 2,21
11 8 16.9 12.7 2,31 3,18 1,5 2,0
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RYCO QUALITY