Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
Cap Nut / Acorn Nut
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  • Description
  • Application
  • Custom Reviews


MOQ: 300kgs
Hexagon domed cap nuts
Standard: DIN917, DIN986, DIN1587
Material: Stainless Steel, Carbon Steel, Alloy Steel, Brass
Finish: Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black oxide, Nickel, Chrome, H.D.G., polishing, anodize,geomet, chrome plating, tinting, Powder coating, spray coating
Grade: SAE J995 Gr.2; CL4, 5, 6
Metric sizes: M4, M5, M6, M8, M10, M12, M14, M16, M18, M20, M22, M24 (Factory stock)
The cap nut is a hex nut with a cover. The function of the cover is to secure the exposed portion of the cover to prevent moisture or other corrosive substances from entering the interior to prevent rust, thereby improving itself and the connector and extending the use time.

* DIN1587 Cap nut On stock

公称直径 螺距 m s Material Surface
D P max min max max min
A B A B
M4 0.7 8 7.4 7.42 7 6.78 6.64 Stainless steel, Carbon steel Plain/ Zinc clear,etc
M5 0.8 10 9.64 9.42 8 7.78 7.64
M6 1 12 11.57 11.3 10 9.78 9.64
M8 1/1.25 15 14.57 14.3 13 12.73 12.57
M10 1/1.25/1.5 18 17.57 17.3 16/17 15.73/16.73 15.57/16.57
M12 1.25/1.5/1.75 22 21.48 21.16 18/19 17.73/18.67 17.57/18.48
M14 1.5/2 25 24.48 24.16 21/22 20.67/21.67 20.16/21.16
M16 1.5/2 28 27.48 27.16 24 23.67 23.16
M18 1.5/2/2.5 32 31.38 31 27 26.67 26.16
M20 1.5/2/2.5 34 33.38 33 30 29.37 29.16
M22 1.5/2/2.5 39 38.38 38 32/34 31.61/33.38 31/33
M24 A2/3 42 41.38 41 36 35.38 35

Who We are?


  • Shanghai Jian & Mei Industry and Trade Co., Ltd. is well equipped with various multi-station nut cold heading machines and supporting multi-functional tapping machines imported from Taiwan. All the manufacturing processes are completed in the factory from drawing of raw material to delivery of finished products, except surface treatment process. JM can provide many kinds of standard and non-standard cold formed nuts, with the specification of M6-M30, 1/4-1”, Grade 4-12. We are also capable of providing various surface treatment processes, including white zinc plating, blue zinc plating, yellow zinc plating, black zinc plating, blackening phosphorating, nickel plating, hot dip galvanization, DacroMat, Magni and so on...


Quality control

  • The production management of our company strictly complies with ISO9001:2008 system. All our products are subjected to strict test and inspection in each process by the workers periodically, starting from the raw materials delivered to the factory.


Test Report


Each batch of exported products are identified with a unique batch number in the Finished product testing report and steel mill raw material quality inspection report.




  • If you need, the test report form the third part is available


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