3-48 x 3/8″ Pan Head Machine Screws Stainless Steel 18-8 Qty 500 Pan heads are slightly rounded with short vertical sides. Machine screws have machine threads for use with a nut or in a tapped hole. Machine screws are often used with nuts but also often driven into tapped holes (without nuts). They might be considered a screw or a bolt based on the Machinery’s Handbook distinction. In practice, they tend to be mostly available in smaller sizes and the smaller sizes are referred to as screws or less ambiguously as machine screws, although some kinds of machine screw can be referred to as stove bolts. Rod with spiral threads the entire length and with one flat end and a head on other end. Holds object to another object that has a pre-threaded hole, frequently a nut. Usually manufactured from metal. Can be rotated into or out of the object using a screwdriver or wrench. General Product Information Head Style : Pan Drive Style : Phillips Drive Size : #1 Thread Size : 3-48 Length : 3/8″ Material : Stainless Steel 18-8 Quantity of Fasteners in Package : 500 Detailed Product Information: Head Diameter : Head Height : 0.071″ Thread Diameter : 0.099″ Threads Per Inch (TPI) : 48 Coarse or Fine Thread : Coarse Thread Coverage : Full Thread Thread Length : 0.375″ Key Notes: Pan head machine screws can be considered both a screw and bolt and can be paired with nuts and washers or threaded into any internally threaded item that has the same machined thread patern Pan heads have a domed top with a flat load bearing surface on the underside that will hold materials being fastened firmly together; these machine screws can be paired with an internal tooth lock washer to form a bond that will withstand vibrations and high traffic when required Phillips pan head are the most commonly used machine screws and being made from stainless steel makes these fasteners the best choice for replacing old screws or using on a project that will be exposed to a damp or corrosive enviroment These phillips pan head machine screws are driven with a Phillips drive bit which is very common; the phillips drive has a tendency to slip if there is too much torque applied during installation and these machine screws being made of a high quality stainless steel which is softer than other non corrosion resistant fasteners are also susceptible to stripping so it is recomended to use a slower speed or to set the clutch on the driver so when the machine screw is fastened completely the drill does not shred the phillips drive Fastenere brand phillips pan head machine screws are made from a high quality stainless steel grade 18-8 which offers one of the highest levels of chemical and corrosion resistance that will out perform and out last all zinc plated fasteners for years with out the need to perform costly and time consuming maintenance Shipping: All orders placed before 3:30 pm EST Will Ship Same Day Tracking is provided on ALL Orders Priority Mail Shipping service is offered at a discount of only $3.95 UPS Ground UPS Next Day Air is available, Please inquire for pricing Returns : ALL returns are accepted if returned within 60 days. Money Back or exchange guaranteed. NO Restocking Fees. For YOU, we constantly strive to find ways to improve our performance.