STEELMAN JS-78290 20 mm deep impact socket standing upright on white background.

STEELMAN JS-78290 20 mm deep impact socket angled view on white background.

STEELMAN JS-78290 1/2" Dr 6pt Deep Impact Socket – 20mm

Q: How deep is this impact socket compared to standard sockets? A: This deep impact socket provides extended reach for recessed fasteners and long bolt threads where standard shallow sockets would bottom out before engaging the nut. The deep well design allows access to lug nuts behind wheel covers and suspension hardware in tight spaces without requiring extension bars that can flex under high torque.

Q: How deep is this impact socket compared to standard sockets? This deep impact socket provides extended reach for recessed fasteners and long bolt threads where standard shallow sockets would bottom out before engaging the nut. The deep well design allows access to lug nuts behind wheel covers and suspension hardware in tight spaces without requiring extension bars that can flex under high torque.

Q: Can this socket handle pneumatic impact wrenches? A: Yes, this socket is specifically designed for impact use with both pneumatic and electric impact tools, featuring hardened chrome vanadium steel construction that absorbs repeated impacts without failure. The black oxide coating resists corrosion from shop chemicals while the ball detent recess securely holds the socket on your impact wrench during operation.

Q: Can this socket handle pneumatic impact wrenches? Yes, this socket is specifically designed for impact use with both pneumatic and electric impact tools, featuring hardened chrome vanadium steel construction that absorbs repeated impacts without failure. The black oxide coating resists corrosion from shop chemicals while the ball detent recess securely holds the socket on your impact wrench during operation.

Q: What's the advantage of 6-point design over 12-point sockets? A: The 6-point design grips fastener flats instead of corners, reducing rounding and providing better torque transfer, especially important for high-torque impact applications and worn fasteners. This design distributes stress across the entire hex surface rather than concentrating force at six corner points, preventing damage to both socket and fastener.

Q: What's the advantage of 6-point design over 12-point sockets? The 6-point design grips fastener flats instead of corners, reducing rounding and providing better torque transfer, especially important for high-torque impact applications and worn fasteners. This design distributes stress across the entire hex surface rather than concentrating force at six corner points, preventing damage to both socket and fastener.

Q: Will the size markings wear off with heavy use? A: No, the 20mm size marking is laser-etched into the steel surface, making it permanent and visible even after extensive shop use and chemical exposure. Unlike painted or stamped markings that fade over time, laser etching creates a permanent indentation in the metal that remains legible through years of professional automotive service work.

Q: Will the size markings wear off with heavy use? No, the 20mm size marking is laser-etched into the steel surface, making it permanent and visible even after extensive shop use and chemical exposure. Unlike painted or stamped markings that fade over time, laser etching creates a permanent indentation in the metal that remains legible through years of professional automotive service work.

$3.76

Product variants

Black steel deep impact socket with 6-point design and laser-etched 20mm size marking

Professional Impact Socket - STEELMAN 1/2" Drive Deep 20mm (JS-78290)

6-Point Design for Maximum Grip and Extended Reach

The STEELMAN 1/2" drive deep impact socket is a professional-grade tool designed for automotive technicians who need reliable access to recessed fasteners. This 20mm deep socket features hardened chrome vanadium steel construction and a corrosion-resistant black oxide finish that withstands heavy impact use without cracking or deforming. Built for mechanics working on suspension components, brake assemblies, and driveline hardware where shallow sockets fall short.

Key Performance Features

Deep Well Access - Reaches recessed lug nuts and fasteners on extended bolts where standard sockets bottom out, eliminating the need for multiple extensions in tight spaces.

6-Point Precision Grip - Engages the flat sides of fasteners instead of corners, reducing rounding and slippage while delivering consistent torque transfer under high-impact conditions.

Impact-Rated Durability - Absorbs repeated pneumatic and electric impact wrench use without fracturing, with laser-etched size markings that remain visible after hundreds of jobs.

Ideal Applications

Perfect for automotive professionals and serious DIYers working on:

Suspension strut and shock absorber mounting hardware.
Brake caliper and rotor assembly bolts.
Driveline and axle components on passenger vehicles.
Fleet maintenance and mobile repair operations.
Tire service and wheel installation projects.
Any 20mm metric fastener requiring deep socket access.

Technical Specifications

STEELMAN JS-78290 Deep Impact Socket Specifications
Specification	Details
Drive Size	1/2-Inch
Socket Size	20mm
Socket Type	6-Point Deep Impact
Dimensions	3.09 × 1.18 × 1.18 in (78.5 × 30.0 × 30.0 mm)
Weight	0.56 lb (254 g)
Size/Quantity	1 Socket
Compatibility	1/2" Drive Impact Wrenches, Ratchets, Extensions
Material	Hardened Chrome Vanadium Steel
Finish	Black Oxide Coating
Size Markings	Laser-Etched Permanent
Retention System	Ball Detent Recess
Standards	Meets ANSI/ASME Requirements

Get Professional-Grade Impact Socket Performance

The STEELMAN JS-78290 delivers the deep reach and impact durability you need for demanding automotive work. Built to professional standards with lifetime reliability.

Order your STEELMAN 1/2" drive deep impact socket today and tackle any 20mm fastener job with confidence.

Frequently Asked Questions

How deep is this impact socket compared to standard sockets?

This deep impact socket provides extended reach for recessed fasteners and long bolt threads where standard shallow sockets would bottom out before engaging the nut. The deep well design allows access to lug nuts behind wheel covers and suspension hardware in tight spaces without requiring extension bars that can flex under high torque.

Can this socket handle pneumatic impact wrenches?

Yes, this socket is specifically designed for impact use with both pneumatic and electric impact tools, featuring hardened chrome vanadium steel construction that absorbs repeated impacts without failure. The black oxide coating resists corrosion from shop chemicals while the ball detent recess securely holds the socket on your impact wrench during operation.

What's the advantage of 6-point design over 12-point sockets?

The 6-point design grips fastener flats instead of corners, reducing rounding and providing better torque transfer, especially important for high-torque impact applications and worn fasteners. This design distributes stress across the entire hex surface rather than concentrating force at six corner points, preventing damage to both socket and fastener.

Will the size markings wear off with heavy use?

No, the 20mm size marking is laser-etched into the steel surface, making it permanent and visible even after extensive shop use and chemical exposure. Unlike painted or stamped markings that fade over time, laser etching creates a permanent indentation in the metal that remains legible through years of professional automotive service work.

About the Brand

Steelman

View All Steelman Products

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