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Flat blade bit attachment with chrome socket and dark flat tip, angle viewAngle view of flat bit with hex neck entering a chrome socket, showing knurling and flat tip

Flat Bit Attachment, 1/4-Inch Drive, Chrome Vanadium and S2 Steel (3-8mm)

Durable flat-blade bit attachment for 1/4-inch drives. Chrome vanadium socket with S2 steel bit. Nine sizes from 3mm to 8mm. Professional-grade construction for manual tool use.

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Description

Flat Bit Attachment – 1/4-Inch Drive, Chrome Vanadium & S2 Steel

Brief Overview

This flat bit attachment combines a chrome vanadium steel socket body with an S2 steel flat-blade bit, designed specifically for manual ratchet and handle use. The 1/4-inch drive format integrates seamlessly into standard automotive and maintenance toolkits. Available in nine sizes from 3mm to 8mm, this attachment covers the most commonly required flat-blade applications. The knurled grip band on the socket body provides secure handling, while the precision-ground blade tip ensures reliable engagement with fastener slots. Pair this with compatible Phillips-head alternatives for a complete screw-driving accessory lineup.

Key Features

  • Dual Material Construction: Chrome vanadium socket for durability; S2 steel bit for impact resistance
  • Nine Size Options: 3mm, 3.5mm, 4mm, 5mm, 5.5mm, 6mm, 6.5mm, 7mm, and 8mm
  • 1/4-Inch Hex Drive: Universal compatibility with standard manual ratchets, impact drives, and quick-change holders
  • Knurled Grip Band: Improves grip control and reduces slippage during manual operation
  • Compact Profile: 37mm total length; 11.9mm outer diameter for accessibility in confined spaces
  • Precision Flat Blade: Chamfered edges and consistent blade geometry reduce cam-out and fastener damage

Business Advantages for Resellers

  • High-Volume SKU Opportunity: Nine distinct sizes from one product line maximize shelf utilization and order frequency
  • Essential Accessory Tier: These attachments are consumed steadily in professional shops—predictable repeat orders
  • Margin-Friendly: Manual tool accessories command consistent markup while remaining cost-competitive
  • Versatile Market Appeal: Automotive technicians, maintenance crews, and hobby workshops all require flat-bit options
  • Low Return Rate: Straightforward product category with minimal warranty claims

Technical Specifications

Size (mm) Part Number Drive Shank (mm) Socket OD (mm) Blade Height (mm) Total Length (mm)
3 740203 11.9 11.9 18 37
3.5 740235 11.9 11.9 18 37
4 740204 11.9 11.9 18 37
5 740205 11.9 11.9 18 37
5.5 740255 11.9 11.9 18 37
6 740206 11.9 11.9 18 37
6.5 740265 11.9 11.9 18 37
7 740207 11.9 11.9 18 37
8 740208 11.9 11.9 18 37

Material & Build Quality

  • Socket Body: Chrome vanadium steel, polished and knurled for grip and visual appeal
  • Flat Blade Tip: S2 steel (high-carbon, impact-resistant alloy) for superior durability against slot deformation
  • Drive Shank: Precision-machined hex geometry; rated for standard 1/4-inch quick-change holders and manual ratchets
  • Finish: Factory-polished chrome plating resists corrosion and oxidation in typical workshop environments

Recommended Applications

  • Automotive Service: Dashboard trim, electrical connector fasteners, interior panel screws
  • Maintenance & Repair: General assembly, appliance servicing, precision equipment adjustment
  • Electronics Assembly: Small-format fasteners requiring controlled, calibrated bit engagement
  • Professional Workshops: High-reliability shops requiring consistent, dependable driver bits

Why Stock This Range

The 3–8mm flat-blade range covers approximately 85% of routine fastening tasks in automotive and general maintenance. Unlike single-size offerings, this nine-piece lineup ensures your customers can source complete solutions from one trusted supplier. The dual-material construction—chrome vanadium for the socket and S2 for the bit—balances cost efficiency with proven durability, making these attachments attractive to both budget-conscious technicians and quality-focused operations.

Order in bulk to build customer loyalty and ensure consistent inventory turnover in this essential accessory category.