Hydraulic Tools

KBOH/BoltOnHooks LLC is now offering a limited selection of hydraulic products like pressure test gauges, quick disconnect couplings, protective caps, sleeving products, and now a custom Diverter Valve kit and Crossover Relief Valve. Please check back frequently as we are trying to expand this product line as time and demand allows.

What Coupler/Tool do I need?

In addition to the tables below, you can download these files and print them to compare to the couplers you have. Tool and coupler sizes are NOT actual measurements of the outside of coupler itself, it refers to the “Body Size” of the coupler.

For the Mid and/or Rear SCV(Remote) connections on the following machines:

ISO 5675
“AG” Type
JD 1023E JD 2305 JD 2720 JD 4100 JD 425
JD 1025/6R JD 2320 JD 2025R JD 4110 JD 445
JD 2210 JD 2520 JD 2032R JD 4115 JD 455
JD 3025E JD2038R MF GC1705
(pre 8/2017)
All JD
ISO 5675
“AG” Type
JD 3×20 JD 4×00# JD 3032/38E* JD 4044/52/66M*
JD 4×20 JD 3033/39/46R* JD 4044/52/66R*
JD 4×10
ISO 5675
“AG” Type
MF GC1705
(post 8/2017)
MF GC1723
MF GC1710* MF GC1725
MF GC1720*
ISO 7241
“B” Type
JD 790*# JD 4×00# KUB L2501 (F) KUB L3600 (F)
JD 990# KUB L3301 (F) KUB L3800 (F)
KUB L3901 (F)
ISO 7241
“A” Type
KIO CK25 KIO NX5510 NH TC40DA KUB L4701 LS 2025H (F) BRSN 4520 (F)
KIO CK27 (F) KIO LK3054
KIO CK35 MF 1526

Please email us if you need the 3/8″ 7241 “A” style couplers for a gauge setup, we do have them.
(F) Means Female Coupler Required on Gauge (contact us if needed, we’ll build it for you)

For the Power Beyond connections on the following machines:

ISO 5675
“AG” Type
JD 1023E JD 2305* JD 3×20 JD 790*#
JD 1025/6R JD 2025R(GEN2) JD 4×20 JD 990*#
JD 2210* JD 2032R(GEN2) JD 4×10* JD 2038R
ISO 7241
“B” Type
JD 2320 JD 2025R(GEN1) JD 4100
JD 2520 JD 2032R(GEN1) JD 4110
JD 2720 JD 4115

*=Not Verified Yet, Please Verify/Email Us
#=Depends on Serial Number, Please Verify/Email Us

**All information above is provided to the best of our ability to verify information.**

Common Thread Sizes

Hydraulic Pressure Test Gauge

The Hydraulic Pressure Test Gauge is used to test pressures in most compact tractors and equipment. The 2.5″, 0-5000 psi liquid filled gauge is graduated in 100 psi increments for easy readings, and the 30″ hose allows you to place the gauge in a convenient location while testing.

Available with or without couplers, this gauge is assembled and ready to use, no more shopping at various sources and paying extra shipping to piece a kit together yourself. KBOH can also make a custom gauge setup with two couplers on it so you can have one tool for different machines.

Hydraulic Pressure Test Gauge

2.5″ Liquid Filled Grade “A” 0-5000 PSI Gauge with stainless steel case
30″ Long Super-Flexible Hose
Male ISO Coupler of your choice Included
Completely Assembled, Ready to Use.

Choose size and style from dropdown, use charts and downloadable documents above (on the main Hydraulic Tools page) to help select the size(s) needed for your machine.

Special configurations available, email us with your needs.

Now includes FREE protective cap (except for the 3/8″ ISO 5675 option)



The “Waite” Hydraulic Decompression Tool

The original “Waite Tool” is made to relieve pressure in hydraulic lines by clamping onto the male Quick Disconnect tip, the large wingnut is then turned to press in the ball or poppet of the tip while directing the pressurized fluid away from the user. This tool is safer than any other method and eliminates the risk of potentially deadly fluid injection into the skin.

Here is the original story in part as published in the 2005 – Volume #29, Issue #5, Page #39 Farm Show Magazine:

Simple Tool Solves Hydraulic Pressure Problems

A simple tool invented (and patented) by George Waite makes releasing pressurized hydraulic couplers as easy as turning on a water faucet. Waite’s Hydraulic Pressure Relief Tool works like pliers to grip the valve end. Turn a simple tap on one side of the pliers, and it slowly presses on the male fitting, gradually releasing pressure as needed. The controlled release keeps fluid from shooting all over you and the equipment and prevents damage to the coupler.

“You can release pressure and fluid into a Dixie cup with this tool,” says Waite. “You don’t have to try to unscrew the hose or force the coupler.” A universal reaction from people who see the patent pending tool for the first time is “‘Why didn’t I think of that?,’” says Waite. The next question is, “Where can I get one?” One such person, Roger Hessler, a Colorado State Transportation Dept. worker and a personal friend of Waite, saw him fiddling with a wooden mockup.
“He said he wanted one,” recalls Waite. “I said, you don’t even know what it is and he replied, yes, I do. I’ve been looking for one for 40 years. I just didn’t know what it was going to look like.”

Hessler showed a working model to his boss, who promptly ordered 100 of the tools. Waite also received the 2005 Colorado Dept. of Transportation Safety and Innovation Award for his invention.

While George no longer makes the tools himself, they are still proudly Made in the USA in Colorado.

Currently available in these sizes, we may add more if requested:

  • 1/4″ Fits Male ISO 5675 “AG” Style Couplers, Ball or Poppet
  • 3/8″ Fits Male ISO 5675 “AG” Style Couplers, Ball or Poppet
  • 3/8″ Fits Male ISO 7241 “B” Style Couplers, Ball or Poppet
  • 1/2″ Fits Male ISO 5675 “AG” Style Couplers, Ball or Poppet
  • 3/8″ FF Fits Male ISO 16028 Flat Face Style Couplers (AKA “Skid Steer” Style)
  • 1/2″ FF Fits Male ISO 16028 Flat Face Style Couplers (AKA “Skid Steer” Style)
  • 3/4″ FF Fits Male ISO 16028 Flat Face Style Couplers (AKA “Skid Steer” Style)

TGK-02 Thread ID Kit

TGK-02 Thread ID Kit

This kit helps positively ID common JIC / NPT / ORB / ORFS type hydraulic fittings used on machinery.

Made in the USA

The JIC, NPT, ORB, & ORFS Thread Gauge Kit is a convenient and affordable solution to identifying domestic threaded fittings in the field, shop, or store front.  Featuring 4 tools in a vinyl pouch, this tool allows you to identify internal threads, external threads, thread pitch, as well as chamfer and nose cone angles specific to JIC and NPT.


SKU: Thread-ID