Stop Fighting Wheel Bearing Locknuts — Use the Right Tool

If you've ever tried to remove or reinstall a truck wheel bearing locknut without the proper socket, you know the frustration: rounded edges, improper torque, and wasted time. The OTC 9850A eliminates all of that with a purpose-built 21-piece set covering the full range of heavy-duty truck applications.

Why Shops Choose the OTC 9850A

• 21 sockets in one set — covers 2-3/32" through 5-1/4", so you're not hunting for the right size mid-job
• High-strength steel construction — 6-point design resists rounding out even on stubborn, corroded locknuts
• 3/4" square drive — pairs with a torque wrench for precise reinstallation to spec (manual tools only; impact use voids warranty)
• Long-extension compatible — clears wide-rim wheels without fighting for access
• Organized tool board included — every socket has a home; nothing gets lost in the bottom of a drawer

The Full Socket Lineup

• P/N 1901: 2-3/32" | P/N 1902: 2-3/8" | P/N 1904: 2-9/16" | P/N 1906: 3"
• P/N 1908: 3-1/4" | P/N 1910: 3-1/2" | P/N 1912: 3-7/8" | P/N 1914: 4"
• P/N 1915: 4-1/8" | P/N 1916: 4-3/8" | P/N 1918: 4-7/8" | P/N 1920: 2-1/4"
• P/N 1921: 2-1/2" | P/N 1922: 2-5/8" | P/N 1923: 2-3/4" | P/N 1926: 3-3/4"
• P/N 1928: 2-9/16" | P/N 1932: 2-7/8" | P/N 1934: 3-1/8" | P/N 1936: 2-3/8"
• P/N 1939: 5-1/4"

Specs

• Drive: 3/4" square (manual tools only)
• Points: 6-point
• Set size: 21 sockets + tool board
• Box dimensions: 34" × 26" × 16"
• Shipping weight: 64 lb

Note: Impact tool use voids the socket warranty. Always reinstall locknuts with a torque wrench to manufacturer spec.