1/4" HEX SHANK TO 3/8" SQUARE DRIVE 3" SOCKET ADAPTER
Turn your drill or impact driver into a convenient powered socket-driving tool with the Benchmark Abrasives 1/4" hex shank to 3/8" square drive socket adapter. The 1/4" quick-change hex shank installs into compatible drills and impact drivers, while the 3/8" square-drive end accepts matching sockets for automotive work, equipment maintenance, assembly, and general repairs.
Built from industrial-grade, heat-treated S2 tool steel hardened to approximately HRC 60, this adapter is designed for strength and shock resistance during powered fastening. Precision CNC machining helps maintain accurate dimensions for secure engagement, while the spring-loaded detent ball helps retain the socket during use. Its 3" overall length also provides added reach when working around recessed or obstructed fasteners.
Product Specifications
Specification
Details
Product Type
Socket Adapter
Overall Length
3"
Input Shank
1/4" Hex
Shank Style
Ball-Groove Quick-Change
Output Drive
3/8" Male Square Drive
Quantity
1 Piece
Features
Converts a compatible 1/4" hex drill or impact driver for use with 3/8" square-drive sockets
Heat-treated S2 tool steel construction for strength and shock resistance
Approximately HRC 60 hardness
CNC-machined for accurate dimensions and secure engagement
Spring-loaded detent ball helps retain the socket during operation
Quick-change ball-groove shank allows fast installation and removal
3" overall length provides additional reach for recessed or difficult-to-access fasteners
Applications & Performance
Designed for driving fasteners with matching 3/8" square-drive sockets in applications such as:
Automotive maintenance and repair
Equipment service
Household maintenance
General repairs
Furniture and equipment assembly
Installing and removing nuts and bolts
Shop and garage projects
Reaching fasteners where a longer adapter provides better access
Always select a socket that correctly matches both the adapter's 3/8" square drive and the fastener being driven.
Machine Compatibility
The 1/4" hex shank is designed for compatible impact drivers and rotary drills.
Compatible examples include:
DEWALT® Models: DCF850, DCF845, DCF860
Milwaukee® Models: 2953-20, 3453-20, 2453-20
Makita® Models: XDT20Z, XDT11Z
Bosch® GDR18V-1860C
RYOBI® PBLID02
RIDGID® R862311B
For keyed or keyless drill chucks, securely clamp the 1/4" hex shank. Use a drill/driver in rotary or screwdriving mode, with hammer mode switched off.
Safety Tips
Always wear appropriate eye and hearing protection during powered fastening operations.
Fully seat the 1/4" hex shank in the tool before use.
Make sure the socket is fully seated over the detent ball and square drive before operating the tool.
Use impact-rated sockets when operating with an impact driver.
Match the socket size to the fastener to reduce slipping and fastener damage.
Do not exceed the operating limits of the drill, driver, socket, or other components in the fastening system.
Inspect the adapter for cracks, deformation, excessive wear, or damage before each use.
Keep hands clear of rotating sockets and fasteners.
1/4" HEX SHANK TO 3/8" SQUARE DRIVE 3" SOCKET ADAPTER
Turn your drill or impact driver into a convenient powered socket-driving tool with the Benchmark Abrasives 1/4" hex shank to 3/8" square drive socket adapter. The 1/4" quick-change hex shank installs into compatible drills and impact drivers, while the 3/8" square-drive end accepts matching sockets for automotive work, equipment maintenance, assembly, and general repairs.
Built from industrial-grade, heat-treated S2 tool steel hardened to approximately HRC 60, this adapter is designed for strength and shock resistance during powered fastening. Precision CNC machining helps maintain accurate dimensions for secure engagement, while the spring-loaded detent ball helps retain the socket during use. Its 3" overall length also provides added reach when working around recessed or obstructed fasteners.
Product Specifications
Specification
Details
Product Type
Socket Adapter
Overall Length
3"
Input Shank
1/4" Hex
Shank Style
Ball-Groove Quick-Change
Output Drive
3/8" Male Square Drive
Quantity
1 Piece
Features
Converts a compatible 1/4" hex drill or impact driver for use with 3/8" square-drive sockets
Heat-treated S2 tool steel construction for strength and shock resistance
Approximately HRC 60 hardness
CNC-machined for accurate dimensions and secure engagement
Spring-loaded detent ball helps retain the socket during operation
Quick-change ball-groove shank allows fast installation and removal
3" overall length provides additional reach for recessed or difficult-to-access fasteners
Applications & Performance
Designed for driving fasteners with matching 3/8" square-drive sockets in applications such as:
Automotive maintenance and repair
Equipment service
Household maintenance
General repairs
Furniture and equipment assembly
Installing and removing nuts and bolts
Shop and garage projects
Reaching fasteners where a longer adapter provides better access
Always select a socket that correctly matches both the adapter's 3/8" square drive and the fastener being driven.
Machine Compatibility
The 1/4" hex shank is designed for compatible impact drivers and rotary drills.
Compatible examples include:
DEWALT® Models: DCF850, DCF845, DCF860
Milwaukee® Models: 2953-20, 3453-20, 2453-20
Makita® Models: XDT20Z, XDT11Z
Bosch® GDR18V-1860C
RYOBI® PBLID02
RIDGID® R862311B
For keyed or keyless drill chucks, securely clamp the 1/4" hex shank. Use a drill/driver in rotary or screwdriving mode, with hammer mode switched off.
Safety Tips
Always wear appropriate eye and hearing protection during powered fastening operations.
Fully seat the 1/4" hex shank in the tool before use.
Make sure the socket is fully seated over the detent ball and square drive before operating the tool.
Use impact-rated sockets when operating with an impact driver.
Match the socket size to the fastener to reduce slipping and fastener damage.
Do not exceed the operating limits of the drill, driver, socket, or other components in the fastening system.
Inspect the adapter for cracks, deformation, excessive wear, or damage before each use.
Keep hands clear of rotating sockets and fasteners.
Frequently Asked Questions
It allows a drill or impact driver with a compatible 1/4" hex interface to drive sockets that have a 3/8" square-drive opening.
It accepts sockets with a 3/8" female square drive. The actual fastener size is determined by the socket installed on the adapter.
No. The 3/8" measurement refers to the socket's square-drive interface, not the nut or bolt size.
A spring-loaded detent ball on the square-drive end helps retain the socket during use.
It fits compatible 1/4" hex impact drivers. Compatible examples include: DEWALT® DCF850, DCF845 and DCF860; Milwaukee® 2953-20, 3453-20 and 2453-20; Makita® XDT20Z and XDT11Z; Bosch® GDR18V-1860C; RYOBI® PBLID02; and RIDGID® R862311B. These are examples, not a complete list. It also fits keyed or keyless drill chucks that securely grip a 1/4" shank. Use impact-rated sockets with an impact driver.
It is manufactured from heat-treated S2 tool steel with approximately HRC 60 hardness for strength and shock resistance.
The longer body provides additional reach when working with recessed fasteners or around surrounding components.
No. The tool-side input is a 1/4" hex shank. The 3/8" square drive is the output that accepts the socket.
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