Ace-to-Five Straight Flush (and 5 of a Kind)

A-2-3-4-5 of a single suit is the lowest possible straight flush — the “steel wheel” — and a straight flush does not beat five of a kind. Two separate ideas get tangled under this search, so here are both answered cleanly: how the ace plays low to make the smallest straight flush, and why five of a kind (a wild-card-only hand) sits above every straight flush including the royal.

The steel wheel: A-2-3-4-5 suited

A straight flush is five cards in sequence, all the same suit. The ace can anchor the bottom of a run just as it anchors the bottom of a normal straight:

• Steel wheel: 5♠ 4♠ 3♠ 2♠ A♠ — five-high straight flush, ace low. The lowest straight flush.
• Royal flush: A♥ K♥ Q♥ J♥ 10♥ — ace-high straight flush. The highest straight flush.

Between those two extremes sit the six-high, seven-high, and so on up to the king-high straight flush. When two straight flushes clash, the higher top card wins — so a nine-high beats a six-high, and the royal flush beats every straight flush of all. The steel wheel is at the very bottom of that category, but it still crushes four of a kind and everything below it.

Straight flush vs five of a kind

Now the second question: does a straight flush beat five of a kind? No — it loses.

Five of a kind is impossible with a standard 52-card deck; you’d need five cards of the same rank, and only four exist. It appears only in games that use wild cards (jokers, deuces wild, and so on). In every such game, five of a kind is defined as the single highest hand possible, ranking above even the royal flush.

So the answer flips depending on wild cards: with them, five of a kind tops the chart; without them, five of a kind can’t exist and the royal flush is the ceiling. A straight flush never beats five of a kind. For the full wild-card ladder, see the highest hand with wild cards.

A worked wild-card example

Deuces are wild. The board and hands resolve like this:

• Player A holds A♠ K♠ with a board of Q♠ J♠ 10♠ → A♠ K♠ Q♠ J♠ 10♠ = royal flush. Normally unbeatable.
• Player B holds A♥ 2♣ (deuce wild) with three aces available → A♠ A♥ A♦ A♣ + the wild 2♣ counted as an ace = five aces, five of a kind.

Player B’s five of a kind beats Player A’s royal flush. That upset is only possible because a wild card manufactured a fifth ace — in a wild-free game it simply can’t happen.

Ranking straight flushes from steel wheel to royal

Every straight flush is named by its top card, and they rank in that order. The steel wheel is the floor; the royal is the ceiling:

• A-2-3-4-5 — five-high (steel wheel), the lowest.
• 2-3-4-5-6 — six-high, the next step up.
• … rising through each top card …
• 9-10-J-Q-K — king-high, the second-highest.
• 10-J-Q-K-A — ace-high (royal flush), the highest.

When two straight flushes meet, you compare that top card and the higher one wins — a king-high straight flush beats a nine-high one. Because the steel wheel is five-high, it loses to every other straight flush, but it still outranks four of a kind and everything below. For the top-two matchup specifically, see straight flush vs royal flush.

Why the ace can’t wrap around

Poker straights do not loop through the ace. The ace is either the top card (above the king) or the bottom card (below the two), never a bridge between them. That’s why Q-K-A-2-3 is nothing — it’s just an ace-high or a jumble, not a straight. The same rule applies to straight flushes: the steel wheel A-2-3-4-5 and the royal 10-J-Q-K-A are the two legal ends, with no connection between them.

Where these hands sit

In a standard game, the top of the ladder is: royal flush → straight flush (down to the steel wheel) → four of a kind. Add wild cards and five of a kind slots in above the royal flush. Either way, the steel wheel remains the lowest straight flush and still beats quads. Confirm the whole order at the hand rankings hub.

Bottom line

A-2-3-4-5 suited is the steel wheel — the lowest straight flush, with the ace playing low — while A-K-Q-J-10 suited is the royal at the top. A straight flush does not beat five of a kind, because five of a kind is a wild-card-only hand that outranks even the royal flush. Learn the ace’s dual role, check whether your game uses wilds, and study the full ladder at the hand rankings hub before your next Texas Hold’em session.