Snap-on RTWH36YSL Flare Nut Head, 9/16″ Ratcheting 12-Point Ring, Y Shank

Description

Does a Y-shank station need a separate J wrench for small hydraulic nuts? Not when it carries the Snap-on RTWH36YSL flare nut head. This 9/16 in ratcheting 12-point ring fits Y bodies, so one wrench covers small lines as well as large ones. Its slot passes over the tube, and the ring then ratchets on the flats.

Where a 9/16 in nut appears

On 37-degree JIC fittings, the -4 swivel nut for 1/4 in tube often measures 9/16 in. Some 45-degree SAE flare nuts on 1/4 in tube use the same hex. You will find them on pilot lines, gauge lines and small cylinder feeds. However, makers vary, so measure the nut before you order the RTWH36YSL.

RTWH36YSL against the RTWH36JSL

• Shank: the RTWH36YSL takes Y (0.560 in) receivers, while the RTWH36JSL takes J (0.425 in).
• Reach: catalog RTWHY heads sit 4.43 in from pin to fastener center, and RTWHJ heads sit 3.50 in.
• Low end: the J-shank QC2I75 starts at 5 ft-lb, and so does the Y-shank CTECH2Y100A.

So the Y head wins when your cabinet already holds Y bodies. On the other hand, a J kit with fine steps may suit a bench that only works small lines.

Body settings for the Snap-on RTWH36YSL flare nut head

CAT1500i lists no maximum working torque for ratcheting flare heads. Therefore the joint value sets the limit, and small -4 nuts usually need little. The CTECH2Y100A covers 5 to 100 ft-lb and stores a factor for longer heads. That matters here, because the 4.43 in reach adds lever compared with a 3.00 in Y head. For a QC3P150 or QD3IN200B, ask Lost in HCM how Snap-on corrects the setting. Also confirm that your value falls inside the body scale.

A crane service kit built around the Snap-on RTWH36YSL flare nut head

Picture a crane service van with one CTECH2Y100A and a tray of Y heads. The crew meets 9/16 in pilot-line nuts beside much larger pressure-line nuts on the same boom. So they fit the RTWH36YSL for the small nuts, then switch heads for the large ones. The ControlTech body applies the right head factor each time. As a result, one calibrated body covers the whole circuit.

Sending an RTWH36YSL request

SMK Vietnam lists the RTWH36YSL, while Lost in HCM supplies it and quotes it. Include your Y body, the fitting type and the target value. With those three details, request an RTWH36YSL quote from Lost in HCM. The J twin and other sizes appear under torque wrench heads and adaptors, or you can contact SMK Vietnam.

Size and shank answers for the RTWH36YSL

Is a 14 mm hex close enough for the RTWH36YSL?

No. 9/16 in equals 14.29 mm, so the ring would sit loose on a 14 mm hex. For metric fittings, Snap-on takes special orders on metric sizes.

Which nut does a -4 JIC fitting use?

Often a 9/16 in hex on 1/4 in tube. Still, confirm it with a caliper before you buy the RTWH36YSL.

What if my torque body has a J shank?

Then order the RTWH36JSL, the J twin of the RTWH36YSL at the same 9/16 in size.