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02 November 2026
This FAQ answers practical buyer questions about DIN 960 black hex bolts, including their thread design, materials, grades, size range, finish, and partial-thread geometry.
The DIN 960 black oxide fine-thread hexagon bolt is a metric black hex bolt for assemblies that call for a fine thread and partial thread. The questions below cover the specifications buyers need to settle before requesting a quotation.
A DIN 960 black hex bolt is a hexagon-head fastener with a metric fine thread, partial-thread design, and black oxide finish. The product is intended for industrial, automotive, and machinery applications where a precision fit and vibration resistance are required. Its fine thread provides self-locking properties and higher torque capacity compared with standard coarse-thread bolts.
The product is listed in carbon steel and stainless steel. Listed grades include 4.8, 8.8, 10.9, 12.9, A2-70, A4-70, and A4-80. The size range is M8 to M100, with lengths from 20 to 200 mm. Select the material, grade, diameter, and length together because each affects the fastener specification required for the assembly.
The fine thread uses metric pitches that vary by nominal diameter. Listed examples include 1 mm and 1.25 mm for M10, 1.25 mm and 1.5 mm for M12, and 1.5 mm and 2 mm for M20. Before ordering, check the grip length and mating-hole arrangement so the partial-thread design fits the assembly.
Black oxide gives the bolt a sleek, anti-reflective surface and moderate corrosion resistance. It suits industrial, automotive, and machinery assemblies where the finish and fine-thread connection match the working conditions. For an outdoor or highly corrosive installation, provide the environment and corrosion requirements with the inquiry so the finish and material can be reviewed for that application.
State DIN 960, black oxide finish, nominal diameter, length, material, grade, thread pitch, and required quantity. For a machinery or automotive assembly, also include the grip length, mating material, and working environment so the partial-thread geometry and fine-thread option can be matched to the assembly.
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Founded in 1996, is a large and professional manufacturer of high-strength fastener. Our factory located in Yongnian County,Handan City, Hebei Province, China,covers an area of 20000 square meters. Now we have advanced cold-forged machine,heat treatment machine and spheroidizing annealing equipment,most of which imported from Taiwan .Output is over 2000 tons every month.
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