4-40 x 3/8" Flat Head Machine Screws Stainless Steel 18-8 Qty 1000

Description

4-40 x 3/8" Flat Head Machine Screws Stainless Steel 18-8 Qty 1000
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. A flat head is A head with flat top and a conical bearing surface (bottom). Designed to be Countersunk. 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
Flat Head Screws Length is
Measured
from the top of the
Head to the Tip
Head Style : Flat
Drive Style : Phillips
Drive Size : #1
Thread Size : 4-40
Overall Length : 3/8"
Material : Stainless Steel 18-8
Quantity of Fasteners in Package : 1000
Detailed Product Information:
Head Diameter :
Head Height : 0.064"
Countersink Angle : 82 Degree
Thread Diameter : 0.112"
Threads Per Inch (TPI) : 40
Coarse or Fine Thread : Coarse
Thread Coverage : Full Thread
Thread Length : 0.375
Key Notes:
Stainless steel flat head machine screws with a phillips drive and a machine thread that will match up to an internally threaded item with the same machined thread patern
Flat head screws have a flat top that tapers down to a cone shape at an 82 degree and will sit flush into a countersunk hole giving a finished appearance
These machine screws are made of a high quality 18-8 grade stainless steel that offers a great corrosion and chemical resistance that will stand strong against the elements providing a long lasting product and giving many years of service
82 degree is the most common countersink screw head angle for machine screws with a flat head
Flat head countersunk machine screws length are measured from the top of the flat head to the end of the thread
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