Klein Tools 65233HEX 32-piece knurled hex bit socket set organized inside an open MODbox clear-lid storage case.
Diagram summarizing 1/4-inch, 3/8-inch, and 1/2-inch drive SAE and metric hex bit socket sizes included in the Klein 65233HEX kit.
Diagram detailing S2 steel bits, chrome-plated sockets, black phosphate finish, and bold stamped size markings on Klein 65233HEX sockets.
Close-up diagram highlighting the knurled socket base on a Klein hex bit socket for secure finger grip during initial hand starting.
Two stacked Klein MODbox socket cases demonstrating how the clear lids open independently while remaining securely interlocked.
Klein 65233HEX hex bit socket case resting on top of a MODbox rolling tool box with its clear lid fully open for site work.
Technician using a ratchet and Klein hex bit socket to adjust an electrical lug connector inside a commercial breaker panel.
Mechanic using a ratchet fitted with a Klein 4 mm hex bit socket to remove an internal hex fastener from an engine bay housing.
Klein 65233HEX 32-piece set opened on a jobsite workbench alongside a ratchet and screwdriver handle for fast socket identification.
Klein Tools Manufacturing promotional video
Klein Tools 65233HEX 32-piece knurled hex bit socket set organized inside an open MODbox clear-lid storage case.
Diagram summarizing 1/4-inch, 3/8-inch, and 1/2-inch drive SAE and metric hex bit socket sizes included in the Klein 65233HEX kit.
Diagram detailing S2 steel bits, chrome-plated sockets, black phosphate finish, and bold stamped size markings on Klein 65233HEX sockets.
Close-up diagram highlighting the knurled socket base on a Klein hex bit socket for secure finger grip during initial hand starting.
Two stacked Klein MODbox socket cases demonstrating how the clear lids open independently while remaining securely interlocked.
Klein 65233HEX hex bit socket case resting on top of a MODbox rolling tool box with its clear lid fully open for site work.
Technician using a ratchet and Klein hex bit socket to adjust an electrical lug connector inside a commercial breaker panel.
Mechanic using a ratchet fitted with a Klein 4 mm hex bit socket to remove an internal hex fastener from an engine bay housing.
Klein 65233HEX 32-piece set opened on a jobsite workbench alongside a ratchet and screwdriver handle for fast socket identification.
Klein Tools Manufacturing promotional video
KLEIN TOOLS

Klein Tools Hex Bit Socket Set 65233HEX 32 Piece SAE Metric (1/4 3/8 1/2 Inch Drive Knurled Chrome Sockets MODbox Storage Organizer Case Kit)

Only 2 left
SKU: 65233HEX
$64.98 USD

Description

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Klein Tools 65233HEX 32-Piece Knurled SAE and Metric Hex Bit Socket Set

The Klein Tools 65233HEX 32-Piece Knurled Hex Bit Socket Set serves as a professional-grade mechanical fastener driving kit engineered to install and service internal hex-drive bolts across automotive assemblies, industrial machinery, and heavy equipment. Weighing 4.5 lbs and organized within a MODbox-compatible clear-lid accessory case measuring 11.38 inches wide by 7.5 inches long by 1.63 inches high, this set integrates 1/4 inch, 3/8 inch, and 1/2 inch drive sizes with heat-treated steel hex bits and corrosion-resistant chrome vanadium sockets. Each socket incorporates deep base knurling to maximize manual finger traction when starting fine-threaded fasteners by hand, while bold stamped size markings allow technicians to select SAE sizes from 5/64 inch to 3/4 inch and metric sizes from 2 mm to 19 mm instantly without mechanical slipping.

Best Used For:

  • Industrial Machinery Maintenance: Driving structural SAE and metric internal hex socket screws on hydraulic pumps, conveyor frames, and automated assembly equipment.
  • Automotive & Mechanical Servicing: Removing recessed hex fasteners on brake calipers, engine intake manifolds, and transmission housings using 1/4 inch, 3/8 inch, or 1/2 inch ratchets.
  • Jobsite Modular Storage: Storing and transporting a complete 32-piece dual-standard hex socket array securely inside Klein MODbox stackable storage systems.

Key Performance & Safety Features

  • Base Knurling Grip Geometry: Raised knurled pattern around the socket perimeter provides high finger traction for spin-starting threads prior to ratchet attachment.
  • Graduated Drive Size Allocation: Scaled across 1/4 inch, 3/8 inch, and 1/2 inch square drives to match appropriate mechanical torque limits for small to large hex bits.
  • Hardened Alloy Steel Bit Core: Precision-ground steel hex bits withstand heavy rotational torque loads to prevent bit rounding and socket profile distortion.
  • Bold Hard-Stamped Size Identification: Large, permanent size markings stamped directly into socket sidewalls ensure instant readability in low-light shop environments.
  • Dual Chrome Vanadium Finish: Polished chrome socket body with black phosphate bit coating protects against chemical corrosion, shop fluids, and metal rust.
  • MODbox Clear-Lid Accessory Case: High-impact modular storage box features a spring-loaded single-hand latch, clear viewing cover, and built-in small parts tray.

What's Included

  • (7) 1/4-Inch Drive SAE Hex Bit Sockets (5/64 inch, 3/32 inch, 1/8 inch, 5/32 inch, 3/16 inch, 7/32 inch, 1/4 inch)
  • (9) 3/8-Inch Drive SAE Hex Bit Sockets (9/32 inch, 5/16 inch, 3/8 inch, 7/16 inch, 1/2 inch, 9/16 inch, 5/8 inch, 11/16 inch, 3/4 inch)
  • (6) 1/4-Inch Drive Metric Hex Bit Sockets (2 mm, 2.5 mm, 3 mm, 4 mm, 4.5 mm, 5 mm)
  • (8) 3/8-Inch Drive Metric Hex Bit Sockets (6 mm, 7 mm, 8 mm, 9 mm, 10 mm, 12 mm, 14 mm, 15 mm)
  • (2) 1/2-Inch Drive Metric Hex Bit Sockets (17 mm, 19 mm)
  • (1) MODbox™ Compatible Clear-Lid Storage Case with Small Parts Tray

Technical Specifications

Brand Manufacturer Klein Tools®
Model Part Number OEM SKU 65233HEX
Tool Kit Classification Type 32-Piece SAE and Metric Knurled Hex Bit Socket Set
Square Drive Sizes Included 1/4 inch, 3/8 inch, and 1/2 inch Square Drive
Measurement Standard Dual Standard (SAE Imperial / Metric)
Included SAE Socket Size Range 5/64 inch through 3/4 inch (16 Sizes)
Included Metric Socket Size Range 2 mm through 19 mm (16 Sizes)
Socket Base Special Feature High-Traction Knurled Perimeter Band
Core Socket Metallurgy Chrome Vanadium Steel Alloy Body with Alloy Steel Bits
Surface Protective Finish Polished Chrome Socket Base with Black Phosphate Bit Coating
Socket Profile Depth Shallow Profile 6-Point Internal Hex Drive
Modular Storage Compatibility Klein MODbox™ System Stackable Case
High-Voltage Insulated Frame No (Uninsulated - do not use on energized electrical circuits)
Total Kit Piece Count 32 Pieces (32 Bit Sockets + MODbox Organizer Case)
Modular Storage Case Dimensions 11.38 inches W x 7.5 inches L x 1.63 inches H (28.9 x 19.1 x 4.1 cm)
Assembled Net Package Weight 4.5 lbs (2.0 kg)
Global Trade Item Number GTIN 00092644652790

Pro-Tip: When installing fine-threaded hex socket bolts into engine blocks or soft aluminum machinery housings, grip the knurled base of the socket directly with your fingers to hand-thread the fastener first. Feeling the threads engage manually prevents cross-threading before attaching a breaker bar or ratchet drive.