(Dan + Shay are co-managed by Jason Owen, and Bieber's manager Scooter Braun.)
Dan + Shay previously led Hot Country Songs with "Speechless," for 11 weeks starting in October 2018, followed by predecessor single "Tequila," which, helped by pop crossover airplay, topped the tally for a week this February.
The 40-1 flight for "Hours" marks the biggest jump to the penthouse since Jason Aldean's "Burnin' It Down" flew 42-1 in its second frame (also after its first full tracking week), beginning a 14-week reign.
"Hours," released on Oct. 4, hauled in 33.3 million U.S. streams in the week ending Oct. 10, according to Nielsen Music, and debuts atop Country Streaming Songs. It's the first title to enter at No. 1 since Bebe Rexha and Florida Georgia Line's "Meant to Be" in December 2017, as well as the first leader on the chart for both Dan + Shay and Bieber.
"Hours" sold 53,000 downloads in the week ending Oct. 10, good for a No. 1 arrival on Country Digital Song Sales, where it's the third chart champ for the duo (following "Speechless" and "Tequila") and the first for Bieber.
On Country Airplay, "Hours" ranks at No. 25, down 17% to 9.1 million audience impressions in the week ending Oct. 13 (after launching at No. 20, helped in its first day of airplay by spins on participating iHeartMedia-owned stations). Being promoted to country and pop radio, the track also debuts at No. 26 on Adult Pop Songs and No. 29 on Pop Songs.
On the all-genre Billboard Hot 100, "Hours" clocks in at No. 4, marking Dan + Shay's best rank; the pair reached a previous No. 21 high with "Tequila." Notably, "Hours" is the first song by a duo or group that primarily records country music ever to debut in the Hot 100's top five.
Bieber adds his 16th Hot 100 top 10 and first since "I Don't Care" (with Ed Sheeran), which debuted and peaked at No. 2 in May.
Along with five No. 1s on the Hot 100, Bieber also now boasts leaders on six other charts that are based on the same methodology: Hot Country Songs, Hot Dance/Electronic Songs, Hot Latin Songs, Hot R&B/Hip-Hop Songs, Hot Rap Songs and Hot R&B Songs, making him the only act to have topped all seven tallies.
Here's a recap of Bieber's No. 1s on each aforementioned chart:
Hot 100: "What Do You Mean?," "Sorry," "Love Yourself," "I'm the One" (DJ Khaled feat. Bieber, Quavo, Chance the Rapper & Lil Wayne), "Despacito" (Luis Fonsi & Daddy Yankee feat. Bieber)
Hot Country Songs: "10,000 Hours," with Dan + Shay
Hot Dance/Electronic Songs: "Where Are U Now," with Skrillex & Diplo, "Cold Water" (Major Lazer feat. Bieber & MO)
Hot Latin Songs: "Despacito"
Hot R&B/Hip-Hop Songs: "I'm the One"
Hot Rap Songs: "I'm the One"
Hot R&B Songs: "No Brainer" (DJ Khaled feat. Bieber, Chance the Rapper & Quavo)
All charts will update tomorrow (Oct. 15) on Billboard.com.