The Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set is displayed open with its custom Pick-and-Click storage case. The dual-purpose fastening kit features an assortment of color-coded S2 steel bits arranged alongside a precision driver handle, with a larger standard magnetic driver handle and loose bits placed in the foreground.
A top-down view of the Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set inside its organized storage case with a clear lid. The compact fastener driver kit securely stores both the precision and standard magnetic handles alongside an array of specialty screwdriver bits optimized for electronics repair.
An informational graphic diagram detailing the features of the Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set. Text highlights include the job-site tough S2M steel construction, the secure modular Pick-and-Click system, two dedicated driver handles for varied tasks, and color-coded rings for quick bit identification.
A technician uses a precision screwdriver from the Bosch PB4042 kit to adjust small fasteners on a drone propeller assembly. The overlay text emphasizes that each bit is forged from heat-treated S2 modified steel to handle tough fastening applications without deforming.
A close-up view of a technician repairing a smartphone using the dedicated precision handle from the Bosch PB4042 bit set. The text on the image describes how the magnetic handles securely grip the driver bits, preventing drops and allowing precise placement of tiny electronic screws.
An electronics technician works on the complex interior components of an unsealed laptop using a precise driver handle. Graphic text below highlights that the dedicated precision handle and bits are engineered for high-level control and accuracy during delicate device maintenance.
A detailed view of a repair specialist performing intricate maintenance on a miniature drone motor using a precision tool from the Bosch PB4042 set. Infographic text underlines the durability of the heat-treated S2 modified steel bits engineered to withstand repeated mechanical use.
The Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set is displayed open with its custom Pick-and-Click storage case. The dual-purpose fastening kit features an assortment of color-coded S2 steel bits arranged alongside a precision driver handle, with a larger standard magnetic driver handle and loose bits placed in the foreground.
A top-down view of the Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set inside its organized storage case with a clear lid. The compact fastener driver kit securely stores both the precision and standard magnetic handles alongside an array of specialty screwdriver bits optimized for electronics repair.
An informational graphic diagram detailing the features of the Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set. Text highlights include the job-site tough S2M steel construction, the secure modular Pick-and-Click system, two dedicated driver handles for varied tasks, and color-coded rings for quick bit identification.
A technician uses a precision screwdriver from the Bosch PB4042 kit to adjust small fasteners on a drone propeller assembly. The overlay text emphasizes that each bit is forged from heat-treated S2 modified steel to handle tough fastening applications without deforming.
A close-up view of a technician repairing a smartphone using the dedicated precision handle from the Bosch PB4042 bit set. The text on the image describes how the magnetic handles securely grip the driver bits, preventing drops and allowing precise placement of tiny electronic screws.
An electronics technician works on the complex interior components of an unsealed laptop using a precise driver handle. Graphic text below highlights that the dedicated precision handle and bits are engineered for high-level control and accuracy during delicate device maintenance.
A detailed view of a repair specialist performing intricate maintenance on a miniature drone motor using a precision tool from the Bosch PB4042 set. Infographic text underlines the durability of the heat-treated S2 modified steel bits engineered to withstand repeated mechanical use.
BOSCH

Bosch Screwdriver Bit Set PB4042 42 Piece Extra Hard S2 Steel Fastener Driver Kit (Magnetic Handles Precision Electronics Standard Repair Case)

In stock
SKU: PB4042
$27.99 USD

Description

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Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set

The Bosch PB4042 42-Piece Extra Hard Precision Screwdriver Bit Set serves as a dual-purpose fastening and drive system engineered for delicate electronics repair and everyday standard screwdriving. Forged from heat-treated S2-modified steel to resist stripping and deformation under torque, this 42-piece driver kit includes 20 precision bits, 20 standard insert bits, two magnetic handles, and a net kit weight of 0.97 pounds. Equipped with color-coded drive profiles and a transparent Pick-and-Click storage case, this comprehensive bit assortment enables technicians to disassemble laptops, smartphones, appliances, and furniture without damaging sensitive fastener heads.

Best Used For:

  • Precision Electronics & Device Disassembly: Removing security Torx, Pentalobe, Tri-wing, and micro Phillips screws on smartphones, laptops, eyeglasses, and circuit boards.
  • General Furniture Assembly & Appliance Maintenance: Driving standard Phillips, Pozidriv, slotted, and hex fasteners into cabinet hardware and household appliances.
  • Field Service Tool Vest Organization: Transporting a complete array of micro and standard driver bits inside a clear-lid Pick-and-Click modular case.

Key Performance & Safety Features

  • Dual-Purpose Bit Array Architecture: Outfitted with 20 micro precision bits for small electronics and 20 standard bits for everyday general fastening.
  • Heat-Treated S2-Modified Steel Core: Forged from high-grade S2 steel to withstand rotational torque stress without rounding or head wear.
  • Color-Coded Drive Selection System: Individual bits feature distinct color rings by drive geometry for rapid visual identification.
  • Dual Magnetic Screwdriver Handles: Includes one standard handle and one slim precision handle, both fitted with magnetic sockets for steady fastener holding.
  • Comprehensive Security Fastener Profile: Incorporates Security Torx, Tri-Wing, Spanner, Pentalobe, Triangle, Hex, and Pozidriv bits to fit modern hardware.
  • Bosch Pick-and-Click Storage Case: Part of the modular click-and-store organizer system with a clear lid for fast inventory monitoring.

What's Included

  • (20) Precision Screwdriver Bits (Phillips, Torx, Hex, Slotted, Tri-Wing, Spanner, Star, Triangle)
  • (20) Standard Insert Screwdriver Bits (Phillips, Pozidriv, Security Torx, Hex, Slotted, Tri-Wing, Spanner)
  • (1) Standard Magnetic Bit Driver Handle
  • (1) Precision Magnetic Bit Driver Handle
  • (1) Bosch Pick-and-Click Modular Storage Case

Technical Specifications

Brand Manufacturer Bosch
Model Identification OEM SKU PB4042
Total Piece Count 42 Pieces Complete Set
Bit Material Construction Heat-Treated S2-Modified Tool Steel
Bit Drive Types Included Phillips, Security Torx, Hex, Slotted, Pozidriv, Tri-Wing, Spanner, Pentalobe, Triangle
Driver Handles Included (1) Standard Magnetic Handle & (1) Micro Precision Handle
Fastener Identification Feature Color-Coded Drive Rings
Assembled Kit Depth 1.000 in. (25.4 mm)
Total Assembled Weight 0.97 lbs. (0.44 kg)
Storage Case System Bosch Pick-and-Click Modular Organizer Case
Global UPC Barcode 000346678406

Pro-Tip: When working on delicate consumer electronics like laptops or smartphones, use the precision magnetic handle and apply light, straight downward pressure. Allowing the magnetic tip to hold micro-fasteners prevents tiny screws from dropping into internal circuit boards or slipping out of alignment.