








Milwaukee 1/4" to 3/8" Drive Socket Adapter 42-04-9110
ANTI-ROLL PRECISION FOR HIGH-TORQUE SERVICE
In a fast-paced shop environment, tool stability and identification are paramount to maintaining workflow efficiency. This Milwaukee socket adapter bridges the gap between 1/4" drive ratchets and 3/8" sockets, engineered with the innovative FOUR FLAT™ side geometry. Unlike traditional cylindrical adapters that easily roll off work surfaces, this design stays exactly where you place it. Furthermore, the parallel flats are wrench-compatible, allowing technicians to apply additional leverage with an open-end wrench when dealing with seized fasteners. For professionals looking for long-term ROI, the chrome-plated finish and laser-etched markings ensure this tool remains a legible and rust-free staple in your kit for years to come.
- / FOUR FLAT™ Sides provide a stable, anti-roll profile on sloped surfaces and offer wrench-compatibility for maximum torque application.
- / High-visibility laser etched drive sizes allow for rapid identification in low-light environments and won't wear off like stamped markings.
- / Premium chrome plating delivers industry-leading corrosion resistance and rust protection against harsh automotive chemicals.
- / Forged alloy steel construction ensures the structural integrity required for heavy-duty professional mechanical maintenance.
TECHNICAL SPECIFICATIONS
| SKU | 42-04-9110 |
| Input Drive Size | 1/4 in. (Female) |
| Output Drive Size | 3/8 in. (Male) |
| Material | Chrome Vanadium Steel |
| Finish | Chrome Plated |
| Warranty | Lifetime Guarantee |
WHAT'S IN THE BOX
(1) 1/4" Drive 1/4"F to 3/8"M Socket Adapter (42-04-9110)
Original: $10.99
-65%$10.99
$3.85Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
ANTI-ROLL PRECISION FOR HIGH-TORQUE SERVICE
In a fast-paced shop environment, tool stability and identification are paramount to maintaining workflow efficiency. This Milwaukee socket adapter bridges the gap between 1/4" drive ratchets and 3/8" sockets, engineered with the innovative FOUR FLAT™ side geometry. Unlike traditional cylindrical adapters that easily roll off work surfaces, this design stays exactly where you place it. Furthermore, the parallel flats are wrench-compatible, allowing technicians to apply additional leverage with an open-end wrench when dealing with seized fasteners. For professionals looking for long-term ROI, the chrome-plated finish and laser-etched markings ensure this tool remains a legible and rust-free staple in your kit for years to come.
- / FOUR FLAT™ Sides provide a stable, anti-roll profile on sloped surfaces and offer wrench-compatibility for maximum torque application.
- / High-visibility laser etched drive sizes allow for rapid identification in low-light environments and won't wear off like stamped markings.
- / Premium chrome plating delivers industry-leading corrosion resistance and rust protection against harsh automotive chemicals.
- / Forged alloy steel construction ensures the structural integrity required for heavy-duty professional mechanical maintenance.
TECHNICAL SPECIFICATIONS
| SKU | 42-04-9110 |
| Input Drive Size | 1/4 in. (Female) |
| Output Drive Size | 3/8 in. (Male) |
| Material | Chrome Vanadium Steel |
| Finish | Chrome Plated |
| Warranty | Lifetime Guarantee |
WHAT'S IN THE BOX
(1) 1/4" Drive 1/4"F to 3/8"M Socket Adapter (42-04-9110)






















