Wednesday, February 29, 2012

StarTech Round Head Replacement 6-32 Hard Drive Mounting Screws - 15 Pack SCREW632R15

!±8±StarTech Round Head Replacement 6-32 Hard Drive Mounting Screws - 15 Pack SCREW632R15

Brand : StarTech
Rate :
Price : $2.99
Post Date : Feb 29, 2012 19:32:57
Usually ships in 1-2 business days



This pack of 15 #6-32 mounting screws are handy for replacing or adding hard drives to your computer systems.

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Monday, February 27, 2012

Acetal Machine Screw, Pan Head, Phillips Drive, #8-32, 5/16" Length (Pack of 100)

!±8± Acetal Machine Screw, Pan Head, Phillips Drive, #8-32, 5/16" Length (Pack of 100)

Brand : Small Parts | Rate : | Price :
Post Date : Feb 27, 2012 08:27:04 | Usually ships in 24 hours

Machine Screws, also referred to as Machine Bolts, are often used with nuts or driven into tapped holes. They come in a variety of head types and drive styles, but are generally available in smaller sizes.

Acetal resins are characterized by their strength, stiffness, and hardness, and are stable over a wide range of temperatures, humidity, environments, and stress. Acetal has a low coefficient of friction, and absorbs little water, minimizing the effect of moisture on its physical properties. Acetal resists neutral oils, grease, petroleum-based fuels, many organic solvents, alkalis, oxidizing agents and acids, both organic and inorganic. Compared to Nylon 6/6, Acetal is harder and has better water resistance, but lower impact strength and abrasion resistance. Acetal is translucent off white in color.

Pan head fasteners have a low, large cylindrical head with a high rounded top edge for higher tightening torques - these fasteners are often recommended to replace older head styles such as round, binding, or truss-head where possible. The Phillips drive style was originally designed so that the driver would slip out under extreme torque, preventing over-tightening and damage to the fastener or the material.

A threaded fastener's size name includes information about the major external diameter, followed by the threads per inch, which indicates if it is coarse or fine. Coarse threads are better when working with brittle materials; they are sturdier and are easier to thread and unthread compared to fine. Coarse threading also allows for thicker coatings and platings.

  • Machine Screws are often used with nuts or driven into tapped holes
  • Acetal is suitable where hardness and water resistance are important considerations
  • Pan head allows for higher tightening torques
  • Phillips drive is designed to cam out under too much torque
  • Coarse threads are better for brittle materials, and will assemble and disassemble more quickly than fine threads

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