Identification Guide
Procedure
Step 1- Identification
Check couplers, threads, fittings & adapters for marking which indicates a country of origin, stamped part number or size.
America: Check NPT, JIC, UNO, ORFS Japan: Check BSP Europe: Check DIN, BSP UK/Australia: Check JIS
Summit Hydraulics Couplers Part Number: Check AGXXF-XXS, AGXXM-XXS, AGXXF-XXN, AGXXM-XXN, AGPXXF-XXS
Summit Hydraulics Fittings Part Number: Check XXXX-XX-XX-FG, ECXX-XXS, FSXXXX-XX-XX, NXXS-XXS, HXX-XXFJ
“All Summit Hydraulic parts have a stamped indicator to aid identification” “N-NPT, S-SAE”
Step 2- Visual Identification
Check couplers and fittings for male and/or female thread. Different features also will help identification.
- Is there an O-Ring? Washer seal?
- Are there any cone seats? Concave or convex?
- Are there any threads? Straight or tapered?
- Is the thread male or female?
- What is the style and angle of the fitting?

Step 3- Thread Measurement
Based on the collected measurements, match each measurements taken against the charts with similar properties to the couplers, threads, fittings & adapters.
Measure the thread diameter. We recommend a “digital caliper” tool.
OD (outer diameter) – male threads
ID (inner diameter) – female threads

Step 4. Conclusion
Based on the collected measurements, match each measurements taken against the charts with similar properties to the couplers, threads, fittings & adapters. Reference step 2 to determine the properties of fittings/couplers and reference step 3 to measure fittings/couplers. Please reference next page for dimensional charts.
Summit Hydraulics Part Number Breakdown
Summit Hydraulics part numbers follow a format to aid the customer in identifying the correct series couplers, threads, fittings & adapters. The info below demonstrates how each part number naming structure can be assembled based on measurements collected by the customer. Assembling these part number will help the customer in finding a replacement part. Please visit www.Summit-Hydraulics.com for all replacement parts.
COUPLERS
Part Number: FF58M-12N Part Number: AG12F-08S
F–58–M—12–N AG-12-F—08-S
FF—Flat Face AG—Agricultural
58—5/8 Body Size Coupler 12—1/2 Body Size Coupler
M—Male Coupler F—Female Coupler
12—Dash 12 Thread Size 8—Dash 8 Thread Size
N—National Pipe Tapered (NPT) S—Society of Automotive Engineer (SAE)
Part Number: A38M-06N Part Number: A12F-08N
A–38–M—06–N A–12–F—08–N
A—A Series A—A Series
38—3/8 Body Size Coupler 12—1/2 Body Size Coupler
M—Male Coupler F—Female Coupler
06—Dash 6 Thread Size 08—Dash 08 Thread Size
N—National Pipe Tapered (NPT) N—National Pipe Tapered (NPT)
FITTINGS & ADAPTERS
Part Number: 6400-04-06-FG
6400—Series Fitting
04—Dash 4 Thread Size
06—Dash 6 Thread Size
Summit Hydraulics part numbers follow a format to aid the customer in identifying the correct series couplers, threads, fittings & adapters.
Summit Hydraulics Quick (MALE) Coupler Identification Chart
The fractional (1/2”, 3/4”, etc.) coupler sizes are industry standards and are not an actual measurement of the coupler.

Summit Hydraulics Fitting Adapters Identification Chart
Please reference www.Summit-Hydraulics.com website to find the different series of fittings and adapters. Each series offers a unique style of thread size, and angle. Summit Hydraulics’ website will provide images of each fitting to aid the customer in identifying each series.

Summit Hydraulics Fitting Adapters Identification Chart
Please reference www.Summit-Hydraulics.com website to find the different series of fittings and adapters. Each series offers a unique style of thread size, and angle. Summit Hydraulics’ website will provide images of each fitting to aid the customer in identifying each series.

Summit Hydraulics Fitting Adapters Identification Chart
Please reference www.Summit-Hydraulics.com website to find the different series of fittings and adapters. Each series offers a unique style of thread size, and angle. Summit Hydraulics’ website will provide images of each fitting to aid the customer in identifying each series.

For more information. Please visit our website, www.Summit-Hydraulics.com and check out our Frequently Ask Questions (F.A.Q) section for more resources.
The information contained in this Couplers, Threads, Fittings and Adapters Identification Guide is the sole property of Summit-Hydraulics. Summit-Hydraulics alone (and its licensors, where applicable) shall own all right, title and interest, including all related Intellectual Property Rights, in and to the Couplers, Threads, Fittings and Adapters Identification Guide. Any suggestions, ideas, enhancement request, feedback, recommendations, or other information provided by you or any other party relating to the Service shall be the sole property of Summit-Hydraulics alone (and its licensor, where applicable).
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Thank you for the information. This will help me ordering the right part next time