Description
Lost in HCM lists the Snap-on RTWH56Y flare nut head as a 7/8 in ratcheting 12-point head with a Y shank (0.560 in). Snap-on’s CAT1500i catalog, however, shows that size and shank only as RTWH56YSL. Before you order, it helps to know what the two numbers share. It also helps to know which questions only Lost in HCM can settle.
RTWH56Y and RTWH56YSL side by side
| Point | RTWH56Y | RTWH56YSL |
|---|---|---|
| Size | 7/8 in | 7/8 in |
| Shank | Y (0.560 in) | Y (0.560 in) |
| In CAT1500i | Not found | Listed |
| Partner warranty line | Vendor-branded terms, audited at a replacement center | Lifetime, non-repairable |
The catalog never spells out what SL stands for. So the two codes may describe one head under two numbers, or two versions of it. We have no source that settles this, therefore this page does not treat the RTWH56Y as a proven twin. The warranty lines also differ in the partner data, so ask which terms apply to your order.
When to order by the RTWH56Y code
Order by the RTWH56Y code when an existing tool list, kit inventory or maintenance record already names it. In that case, a matching number keeps the audit trail clean. For a new kit, by contrast, the catalog number RTWH56YSL is the safer reference. Either way, tell Lost in HCM which code your paperwork uses.
Run-down work for the Snap-on RTWH56Y flare nut head
Picture a hydraulic power unit with a crowded manifold and several 7/8 in hose nuts. The handle has a short arc, and a socket cannot pass the hose. So the Snap-on RTWH56Y flare nut head drops over each line and ratchets the nut down in quick strokes. Snap-on publishes no maximum torque for ratcheting flare heads, though. For that reason, many crews finish firm joints with a solid ring.
Solid 7/8 in heads beside the RTWH56Y
- QYRXS28A: 6-point, Y shank, 133 ft-lb maximum in both Snap-on sources.
- QYRX28A: 12-point, Y shank, also rated 133 ft-lb.
- QJRXS28A: 6-point on a J shank, where the two sources print different limits.
Both Y rings sit 3.00 in from the pin, while catalog RTWHY ratchets reach 4.43 in. Therefore set the body for the head you actually fit, and stay under the lowest limit in the chain. In practice, crews use the RTWH56Y for speed and then switch heads for the measured pull.
Snap-on RTWH56Y flare nut head order details
SMK Vietnam shows the RTWH56Y as a partner listing. Lost in HCM supplies the head, checks the number and writes the quote. Share your Y body model, the code on your tool list and the fitting size. Next, send an RTWH56Y request to Lost in HCM. You can also compare the catalog ratchets under torque wrench heads and adaptors or contact SMK Vietnam.
Open questions on the RTWH56Y
Is RTWH56Y a Snap-on catalog number?
It does not appear in CAT1500i, which shows RTWH56YSL at 7/8 in on the Y shank. Lost in HCM lists both codes and confirms what it can supply.
Do the RTWH56Y and RTWH56YSL listings carry the same warranty?
No. The partner data gives each code a different warranty line, so ask Lost in HCM which terms cover your head.
Can a J-shank wrench drive the RTWH56Y?
No, the RTWH56Y takes a Y body. For a J body at 7/8 in, CAT1500i lists the RTWH56JSL.
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