160 Diameter
160 Diameter x . 470 length)

What do the numbers mean on a machine screw?

The first number is the diameter. The bigger the number the bigger the screw. The second number is the number of threads per inch. Check your state and local codes before starting any project. Follow all safety precautions.

How wide is a #8 machine screw?

US Machine Screw Diameters

SizeNominal Thread Diameter
DecimalNearest Fractional
#80.164″5/32″
#100.190″3/16″
#120.216″7/32″

What is a #8 machine screw?

A #8 screw size is . 164 fraction of an inch. The diameters listed in the chart below are in fractions of an inch, so the #12 is just shy of 1/4 inch. A more detailed table with thread count can be found below, along with tap drill sizes.

What does a #4 40 screw mean?

40 threads per inch
4-40: 0.1120 or 14/125 in diameter; 40 threads per inch. 5-40: 0.1250 or 1/8 in diameter; 40 threads per inch.

What are the different sizes of machine screws?

Machine screws are often found in sizes of: 0, 1, 2, 3, 4, 5, 6, 8, 10, 12, 14—the larger the number, the larger the screw. Machine screws, but especially caps screws and bolts, can range from 1/4 inch up to 3 inches or more.

How do you size a machine screw?

To measure the diameter of screws and bolts, you measure the distance from the outer thread on one side to the outer thread on the other side. This is called the major diameter and will usually be the proper size of the bolt.

How do you know screw size?

Is 4-40 a metric or standard?

Fastener Conversion Chart

Inch EquivalentMetric Size-PitchISO and IFI Rec.
3- 483- 56M2.5x 0.45
4- 404- 48M3x .5
6- 326- 40M3.5x .6
8- 328- 36M4x .7

When was banbanner General Technical Reference Manual released?

Banner General Technical Reference Manual Release 8.1 October 2008 Notice of Rights Copyright © SunGard Higher Education 1993, 2008.

What size screws do I need for my instrument?

Small-diameter screws lower than M2.6 size for precision instruments. Screws for falling-out preventation and screws with full thread. Screws for fixing and locating clamping screws and ball plungers. Screws for equipment and facilities that use inch-screw specifications.

What are the characteristics of high performance stainless steel screws?

High performance stainless steel screws have excellent strength, heat resistance, and corrosion resistance compared to standard stainless steel screws. Screws made of titanium. They are lightweight, nonmagnetic, and chemically resistant.

What are special material screws?

Screws with special materials, surface treatments, and shapes for applications that require chemical resistance. Various marks and letters are laser-engraved on NBK products. This page describes “Properties of Special Material Screws” such as ceramic, nickel, aluminum, molybdenum, Inconel, Hastelloy and phosphor bronze.