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Name: Plastic Black Nylon66 Socket Head Screws
Size: M2.5,M3,M4,M5,M6,M8,M10
Standard: DIN912，ANSI/ASME B18.3，JIS B1176-88，ISO4762
Material: PA66, PA+50%GF, PA+50%GF, PEEK, PVDF, PPS, PTFE, PP, PVC, PC
These screws are chemical and oil resistant, nonconductive, and lightweight. Length is measured from under the head.
Nylon screws may expand when exposed to moisture. Glass-filled nylon screws are reinforced with fiberglass to be twice as strong as standard nylon screws. Polypropylene screws resist grease, acids, and alkalies better than nylon screws. Unlike nylon, they won't absorb moisture. PEEK screws are twice as strong as standard nylon screws and withstand temperatures up to 500° F. They resist more chemicals than polypropylene screws.
Coarse threads are the industry standard; choose these screws if you don't know the pitch or threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Screws that meet ASME B18.3 comply with specifications for dimensional standards.
Product Specification
There are many varieties of PA, mainly PA6, PA66, PA610, PA11, PA12, PA1010, PA612, PA46, PA6T, PA9T, MXD-6 Aromatic Acid. PA6, PA66, PA610, PA11, PA12 are the most commonly used.
Nylon engineering plastics are presented in the appearance of angular, tough, bright surface, white (or milky white) or, yellowish, transparent, or translucent crystalline resin; it is easy to be written into any color. The molecular weights of nylons as engineering plastics are generally 15-30 thousand. Their densities are slightly greater than 1, density: 1.14-1.15g/cm3. Tensile strength: > 60.0MPa. elongation: > 30%. Bending strength: 90.0MPa. Notched impact strength: (kJ/m2) ＞ 5.
The shrinkage rate of nylon is 1%~2%. The dimensional change of moisture absorption after molding should be noted. Water absorption is 100% 8% when saturated with relative moisture absorption. Operating temperature: -40～105℃. Melting point: 215～225℃. Suitable wall thickness 2～3.5mm. PA's mechanical properties, such as tensile and compressive strength with the temperature and moisture absorption and change, so water is a relatively PA plasticizer; adding fiberglass, its tensile compressive strength can be increased by about two times, the ability to withstand the temperature is also increased accordingly, the PA itself is very high abrasion resistance so that it can be operated non-stop without lubrication, such as want to get special lubrication effect, you can add sulfide in the PA. You can add sulfide into PA if you get a special lubrication effect.
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