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Flat bit socket adapter with knurled silver body and dark gray flat blade tip, socket end facing cameraAngled shot of flat slotted blade and hex shank entering a silver knurled socket body, no visible markings

Flat Bit Attachment 5.5mm, 1/4-Inch Drive, Chrome Vanadium & S2 Steel

Precision flat bit attachment for manual fastening tasks, built with chrome vanadium and S2 steel for durability and reliability.

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Description

Flat Bit Attachment 5.5mm, 1/4-Inch Drive, Chrome Vanadium & S2 Steel

Brief Overview

This 5.5mm flat bit attachment is engineered for manual screwdriving and fastening applications requiring precision and durability. Built from a dual-material construction of chrome vanadium socket body and hardened S2 steel blade, it delivers consistent performance in demanding workshop environments. The 1/4-inch drive design integrates seamlessly with standard bit holders and manual drivers. For shops requiring coverage across multiple slot widths, 3mm and 4mm flat bit alternatives are also available to build a complete fastening toolkit.

Key Features

  • Dual-Material Construction: Chrome vanadium socket body paired with S2 steel blade for optimal strength and impact resistance
  • 5.5mm Blade Width: Targets standard medium-slot fasteners common in automotive and general assembly work
  • 1/4-Inch Drive: Compatible with 1/4-inch bit holders, socket adapters, and manual driving tools
  • Knurled Grip Band: Textured surface on socket body improves hand control during manual operation
  • Compact Profile: 37mm total length with 18mm blade thickness ensures precise engagement without excessive overhang
  • 11.9mm Socket Diameter: Standardized size for reliable fit in universal bit holders

Why Resellers Stock This Product

  • Recurring Demand: Flat-slot fasteners remain standard across automotive, machinery assembly, and maintenance sectors—ensuring steady turnover
  • Affordable Entry Point: Low unit cost creates attractive margin potential on bulk orders
  • Replacement Market: Blade wear and occasional damage drive repeat purchases from established customer bases
  • Kit Completeness: Customers buying one size often need 3mm, 4mm, and 6mm variants—creating cross-sell opportunities
  • Professional Credibility: Offering quality manual tools positions your shop as a one-stop source for precision fastening

Technical Specifications

Parameter Value
Bit Size 5.5 mm
Drive Type 1/4-Inch Drive
Socket Outer Diameter (D2) 11.9 mm
Blade Thickness (T) 18 mm
Total Length (L) 37 mm
Socket Material Chrome Vanadium Steel
Blade Material S2 Steel
Surface Finish Chrome-plated (socket body)

Application Context

This attachment is designed for manual torque applications where power tools would be overkill or inappropriate:

  • Assembly work requiring controlled, hand-driven fastening
  • Precision machinery maintenance with slot-head fasteners
  • Vintage equipment or sensitive assemblies where controlled force is essential
  • Field repair kits where compact, reliable tools are valued

The 5.5mm blade width bridges the gap between common 4mm and 6mm sizes, making it essential for shops serving diverse fastener inventories.

Call to Value

Stock this attachment as part of a complete flat-bit lineup. The low acquisition cost and predictable replacement cycle make it a reliable profit driver. Pair it with complementary sizes to increase customer lifetime value and establish your shop as the trusted source for precision manual fastening tools.