-
National Aerospace Standard NAS517-4-26 Steel Screw, Machine
National Aerospace Standard NAS517-4-26 Steel Screw, Machine
PART #: SGP141989MFR PART #: NAS517-4-26Our Price: $1.20 (Each)QTY: Add to Cart -
National Aerospace Standard NAS517-4-28 Steel Screw, Machine
National Aerospace Standard NAS517-4-28 Steel Screw, Machine
PART #: SGP141990MFR PART #: NAS517-4-28Our Price: $2.00 (Each)QTY: Add to Cart -
National Aerospace Standard NAS517-4-25 Steel Screw, Machine
National Aerospace Standard NAS517-4-25 Steel Screw, Machine
PART #: SGP141988MFR PART #: NAS517-4-25Our Price: $1.28 (Each)QTY: Add to Cart -
National Aerospace Standard NAS517-4-3 Steel Screw, Machine
National Aerospace Standard NAS517-4-3 Steel Screw, Machine
PART #: SGP141991MFR PART #: NAS517-4-3Our Price: $1.34 (Each)QTY: Add to Cart -
National Aerospace Standard NAS517-4-8 Steel Screw, Machine
National Aerospace Standard NAS517-4-8 Steel Screw, Machine
PART #: SGP141996MFR PART #: NAS517-4-8Our Price: $0.38 (Each)QTY: Add to Cart -
National Aerospace Standard NAS517-4-9 Steel Screw, Machine
National Aerospace Standard NAS517-4-9 Steel Screw, Machine
PART #: SGP141997MFR PART #: NAS517-4-9Our Price: $0.84 (Each)QTY: Add to Cart -
Aeronautical Standard AN526C832R6 Stainless Steel Screw, Machine
Aeronautical Standard AN526C832R6 Stainless Steel Screw, Machine
PART #: SGP89967MFR PART #: AN526C832R6Our Price: $0.31 (Each)QTY: Add to Cart -
Aeronautical Standard AN526C632R7 Stainless Steel Screw, Machine
Aeronautical Standard AN526C632R7 Stainless Steel Screw, Machine
PART #: SGP89958MFR PART #: AN526C632R7Our Price: $0.49 (Each)QTY: Add to Cart -
Aeronautical Standard AN526C1032R7 Stainless Steel Screw, Machine
Aeronautical Standard AN526C1032R7 Stainless Steel Screw, Machine
PART #: SGP89949MFR PART #: AN526C1032R7Our Price: $0.44 (Each)QTY: Add to Cart -
Aeronautical Standard AN526-440R6 Steel Screw, Machine
Aeronautical Standard AN526-440R6 Steel Screw, Machine
PART #: SGP89909MFR PART #: AN526-440R6Our Price: $0.82 (Each)QTY: Add to Cart -
Aeronautical Standard AN526-440R16 Steel Screw, Machine
Aeronautical Standard AN526-440R16 Steel Screw, Machine
PART #: SGP89907MFR PART #: AN526-440R16Our Price: $0.35 (Each)QTY: Add to Cart -
Aeronautical Standard AN526-1032R14 Steel Screw, Machine
Aeronautical Standard AN526-1032R14 Steel Screw, Machine
PART #: SGP89891MFR PART #: AN526-1032R14Our Price: $0.24 (Each)QTY: Add to Cart
When it comes to aviation and fasteners the first image that comes to mind is a screw. It is one of the most popular pieces of hardware. But with popularity comes variety and too much variation can be confusing. That's why SkyGeek is here to add clarity to your purchasing decisions.
As mentioned, screws are fasteners, particularly threaded fasteners. Threading offers more strength and rigidity and in this way threaded fasteners are more practical than rivets.
One of the main problems with screws is figuring out how they are different from bolts. Like bolts, screws have a head and a threaded section. The threaded end of a bolt, however, is usually blunt whereas a screw may be blunt but is often pointed. Also, bolts have a relatively short threaded section and a relatively long grip length; a screw may have no clear grip length. A bolt head may or may not need turning while a screw is specifically designed so as to be turned by its head. While there is no official distinction, a general rule of thumb is this: bolts require a nut when screwing in the threaded end; screws, on the other hand, may use a nut but is generally secured directly into the affected area.
Screws are designated by type, three of the most common in aviation being machine, structural, and self-tapping. Machine screws are designed with finer threads and made with better precision; they are often used with nuts or tapped holes. Structural screws are strong and make durable connections. Self-tapping screws, as its name indicates, creates its own threads as it is driven into a hole.
Determining the difference among screw heads is essential in picking the right one. Common screw heads are: countersunk, round, brazier, flat, fillister, pan, truss, and socket. In addition, screw heads have different slots in them including straight, Phillips, and Reed and Price.
A screw's composition is vital in knowing its strength. Steel is quite common as well as its variations (e.g. corrosion resistant, carbon, etc.); aluminum, brass, bronze and copper screws are available as well. Moreover, screws sometimes have surface treatments and finishes—cadmium is frequently employed.
SkyGeek's inventory of screws continues to expand. We offer screws that conform to U.S. military standards and specifications. In order to zero in on what you need, examine each series of screw and compare their size and length to match the right screw for the proper application.