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86405M/A- Budd Wheel Impact Socket-¾” Drive
86405M/A: ¾” Drive 4-Point (Square) Budd Wheel Impact Socket
- Douilles longues impact 6 pans/Długie sześciokątne nasadki udarowe
- Lange Kraft-Sechskantnüsse/Vasos largo de hexagonal impacto
- مآخذ تأثير سداسية طويلة/ซ็อกเก็ตกระแทกหกเหลี่ยมยาว
- DIN 3121- ISO 1174/DIN 3129- ISO 2725-2/氣動套筒 公制/英制
- Truck and Bus such Vehicle Use
86405M/A is an industrial-grade Budd Wheel Impact Socket engineered for the extreme torque requirements of commercial trucking, hydraulic infrastructure, and heavy plant maintenance. Featuring a specialized 4-Point (Square) internal profile, this socket is specifically designed to engage the square-head inner nuts on dual-wheel “Budd” systems and square-drive hydraulic valve stems. Forged from premium Chrome Molybdenum (Cr-Mo) alloy steel, the 86405M/A is built to survive the high-frequency percussive energy of 3/4″ drive pneumatic impact wrenches without fracturing.
| 86405M (mm) | 86405A (inch) | D1 (mm) | D2 9mm) | L (mm) |  g |  pcs |
|---|---|---|---|---|---|---|
| 17 | 11/16 | 40 | 40 | 50 | 350 | 5 |
| 19 | 3/4 | 43 | 40 | 50 | 360 | 5 |
| 20 | 42 | 42 | 50 | 360 | 5 | |
| 21 | 13/16 | 42 | 42 | 50 | 360 | 5 |
| 22 | 7/8 | 44 | 44 | 50 | 370 | 5 |
| 15/16 | 44 | 44 | 50 | 380 | 5 |
Feature
- Why is a 4-point socket used instead of a standard hex? A 4-point socket is mandatory for square-head fasteners. Using a hex socket on a square head only contacts the corners, which will instantly shear the fastener under the torque of a 3/4″ impact gun.
- Is this socket only for trucks? No. While “Budd Wheel” is the common name, these are widely used in Hydraulic Systems and Water Infrastructure for operating square-head valves and heavy-duty structural tension bolts.
- Does Cr-Mo make a difference in 4-point sockets? Yes. Square drive sockets experience high stress at the four corners. Chrome Molybdenum ensures those corners do not “spread” or crack under industrial-scale impact.
- How do I ensure the socket stays on the tool? The 86405M/A features a safety pin hole. For high-vibration work or overhead infrastructure, you must use a steel pin and rubber O-ring to lock the socket to the anvil.
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