ISO7380 Hexagon Socket Half round head Reduced shanke screws
Black-oxide stainless steel screws have a matte-black finish. Silver-plated stainless steel screws have mild lubricity so they thread smoothly. Chrome-plated stainless steel screws have a decorative, mirror-like finish.
Metric screws are also known as A2 stainless steel 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 B1.1, ASME B18.3, ISO 21269, and ISO 4762 (formerly DIN 912) comply with standards for dimensions. Screws that meet ASTM B456 and ASTM F837 comply with standards for materials.
Shank Diameter： M3 /M4/ M5 /M6 /M7 /M8/M10/ 1/4 5/16 3/8 1/2
Length:5mm-200mm
Head Type: Flat head
Finish:yellow/white/blue zinc plated
GB 948 Slotted Countersunk Head Screws With Waisted Shank
Cross recessed pan headReduced shanke screws
DIN 7964 (B) Reduced shanke bolts and screws with coarse thread – Slotted pan head
DIN 7964 (E) Reduced shanke bolts and screws with coarse thread – Hexagon socket head
Knurled screws with small head
GB 839 Knurled Thumb Screws With Waisted Shank
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