S-96242A566 1/4"-20 x 3" 12-Point Screws

12-Point Screws

0806FA00166 12-Point Screws
0806FA00166 12-Point Screws

Image may differ from product. See technical specification for details.

Part No.
Part No. 0806FA00166
Equivalent to mcmaster :
96242A566

Basic Information

Screw Features Flanged
System of Measurement Inch

Head Parameters

Head Type 12-Point
Head Width 5/16"
Head Height 1/4"

Dimensions

Length 3"
Flange Diameter 33/64"

Thread Parameters

Thread Type UNC
Thread Size 1/4"-20
Thread Diameter 0.25"
Thread Spacing Coarse
Min Thread Length 1"
Thread Direction Right Hand
Thread Fit Class 3A
Threading Partially Threaded

Tip & Drive Parameters

Drive Style External 12-Point
Drive Size 5/16"

Material & Strength

Material 450 Stainless Steel
Hardness Rockwell C37
Tensile Strength 170000 psi
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance with 450 Stainless Steel construction for extended service life in harsh environments
  • Exceptional torque transmission through the external 12-point drive design, preventing tool slippage during installation
  • Enhanced load distribution with the integrated flange, reducing surface pressure and preventing material damage
  • Precise thread engagement with Class 3A fit ensuring reliable, vibration-resistant connections in critical applications
  • High mechanical strength with 170,000 PSI tensile rating and Rockwell C37 hardness for heavy-duty performance
  • Optimized installation efficiency with coarse UNC threading enabling faster assembly in industrial settings
  • Versatile partial threading design allowing for both secure clamping and adjustable positioning capabilities

Professional Applications & Engineering Value

Engineered for demanding industrial environments, these 12-point flanged screws in 450 Stainless Steel provide critical solutions for vibration-prone assemblies. The external 12-point drive delivers maximum torque transfer without cam-out, while the integrated flange eliminates the need for separate washers, streamlining installation in tight spaces. With Class 3A thread fit and coarse UNC threading, these fasteners maintain precise alignment in heavy machinery, automotive systems, and structural frameworks where 170,000 PSI tensile strength ensures joint integrity under extreme loads. The partially threaded design offers flexibility for both fixed and adjustable connections, making them ideal for equipment requiring both clamping force and alignment tolerance.

Specification Summary & Compliance

Manufactured to exacting standards with 1/4"-20 UNC coarse threads and Class 3A thread fit for superior dimensional accuracy. These 12-point screws feature a 5/16" external drive and 3" length with partial threading beginning at 1" minimum thread length. The 450 Stainless Steel construction meets industry requirements for corrosion resistance, while the Rockwell C37 hardness and 170,000 PSI tensile strength ensure compliance with heavy-duty performance specifications. Manufactured in accordance with standard inch measurement systems for reliable interchangeability in industrial applications.

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