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| Categories | Flange Head Screws |
|---|---|
| Brand Name: | Summery |
| Model Number: | Din6921 Flange Head Screws |
| Certification: | ISO 4162 |
| Place of Origin: | shanghai |
| MOQ: | Negotiable |
| Price: | Negotiation |
| Payment Terms: | Western Union, MoneyGram, L/C, D/A, T/T |
| Supply Ability: | 20000 pcs/day |
| Delivery Time: | 7-10 days |
| Packaging Details: | According to customer requirements |
| Name: | Din6921 Flange Head Screws |
| Class: | 10.9 |
| Size: | M16x40 |
| Material: | alloy steel |
| Finish: | Plain / Nickel / Black Oxide / Dacromet |
| Application fields: | Automotive&mechanical |
Alloy steel DIN6921– M16x40– 10.9 Dacromet Flange Head Screws >
This International Standard specifies the characteristics of flange hexagon bolts ,with product grade A, with threads from M5 up to and including M16,length from 10mm to 200mm,and property classes 8.8, 9.8, 10.9 and A2-70,A4-70.
Shanghai summery industrial machine Co.,Ltd was established in 2006,it is located at Shanghai,which is the most vigorous city in world.
As a one-stop-stop,we can manufacture,marketing,design,research and develop,we stand for reliable technology and the flexibility to cater to your needs.
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| Minimum breaking torques | |||||
| Thread | Pitch (mm) | Minimum breaking torque (N.m) | |||
| Property class | |||||
| 8.8 | 9.8 | 10.9 | 12.9 | ||
| M2 | 0.40 | 0.37 | 0.4 | 0.45 | 0.5 |
| M2.5 | 0.45 | 0.82 | 0.9 | 1 | 1.1 |
| M3 | 0.50 | 1.5 | 1.7 | 1.9 | 2.1 |
| M3.5 | 0.60 | 2.4 | 2.7 | 3 | 3.3 |
| M4 | 0.70 | 3.6 | 3.9 | 4.4 | 4.9 |
| M5 | 0.80 | 7.6 | 8.3 | 9.3 | 10 |
| M6 | 1.00 | 13 | 14 | 16 | 17 |
| M7 | 1.00 | 23 | 25 | 28 | 31 |
| M8 | 1.25 | 33 | 36 | 40 | 44 |
| M8x1.0 | 1.00 | 38 | 42 | 46 | 52 |
| M10 | 1.50 | 66 | 72 | 81 | 90 |
| M10x1.0 | 1.00 | 84 | 92 | 102 | 114 |
| M10x1.25 | 1.25 | 75 | 82 | 91 | 102 |
| Mechanical and physical peroperties of bolts,screws and studs | |||||
| Mechanical and physical peroperties | Property class | ||||
| 8.8 | 10.9 | 12.9 | |||
| d≦16 mm | d﹥16 mm | ||||
| Minimum tensile strength (N/mm2) | min | 800 | 830 | 1040 | 1220 |
| Vickers hardness (HV) | min | 250 | 255 | 320 | 385 |
| max | 320 | 335 | 380 | 435 | |
| Brinell hardness (HB) | min | 238 | 242 | 304 | 366 |
| max | 304 | 318 | 361 | 414 | |
| Rockwell hardness (HRC) | min | 22 | 23 | 32 | 39 |
| max | 32 | 34 | 39 | 44 | |
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