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Fully Threaded. Partially Threaded. Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves,pumps,motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.
粗牙螺纹（UNC)、细牙螺纹（UNF)、超细牙螺纹 (UNEF)、特殊牙距螺纹 (UNS)之间有牙形、牙齿量、适用情况的区别：. 1、牙形. UNC表示美国统一螺纹UN系列（外螺纹牙底半径任选）中的粗牙螺纹，粗牙的牙形大，为大 螺距。. UNF是United Fine Thread，即美制细牙螺纹。. 细 ...
UNEF Thread. 18-8 Stainless Steel— 18-8 stainless steel nuts have good chemical resistance. They may be mildly magnetic. Black-Oxide 18-8 Stainless Steel— Black-oxide 18-8 stainless steel nuts have a dark surface color. 316 Stainless Steel— 316 stainless steel nuts have excellent chemical resistance and can be used in saltwater environments.
Choose from our selection of UNEF connectors in a wide range of styles and sizes. In stock and ready to ship.
Threaded Caps. Protect externally threaded components from contaminants during fabrication and storage. Plastic caps resist corrosion better than aluminum caps. For technical drawings and 3-D models, click on a part number. Ht. Max. Choose from our selection of UNEF inserts in a wide range of styles and sizes. In stock and ready to ship.
Loosen and tighten the die with the included set screw to adjust thread depth. Uncoated high-speed steel dies last longer than carbon steel dies when cutting similar material. For technical drawings and 3-D models, click on a part number. Choose from our selection of UNEF dies in a wide range of styles and sizes. In stock and ready to ship.
Made of anodized aluminum, these plugs resist corrosion and are lightweight. They meet military and SAE standards for humidity indicators. For technical drawings and 3-D models, click on a part number. Choose from our selection of UNEF gauges in a wide range of styles and sizes. In stock and ready to ship.
Thread geometry - Unified Extra Fine (UNEF) All dimensions in mm unless otherwise stated. d1 - Minor thread diameter male. d2 - Minor thread diameter female. d3 - Pitch diameter. d4 - Major diameter. Thread.
UNF. Rockwell C60. Tool Steel. Class 2A, Class 3A. 0" to 0.0003". 00000000. 000000. Choose from our selection of UNF ring gauges, including over 120 products in a wide range of styles and sizes. In stock and ready to ship.
Threads per Inch and Thread Pitch Size Checkers. Inspect fasteners and verify threads with this checker. Choose from our selection of UNF thread gauges in a wide range of styles and sizes. In stock and ready to ship.
