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Model Number : Industrial Fasteners
Certification : GB/T 19001-2016/ISO 9001:2015, CE
Place of Origin : China
Type : Screw,bolts,nuts,washers,rivets,pin
Standard : GB/DIN/ISO/ASME/BS/JIS
Material : Carbon/Stainless/Copper Steel
M#(Diameter) : M2-M12, #4-#14
L(Length) : 8mm-500mm
Measurement system : Imperial (Inch),Metric
Grade : 4.6、5.6、6.8、8.8、9.8、10.9、12.9、14.9
Color : Natural color,black,Silver
Surface treatment : Plain; Black; Zinc-plated; HDG,polished,Zinc plated,Nickel-plated,as demand
Sample : If we have the stock available,sample is free
Packing : Eco-friendly pp bag / EPE Foam,Poly bag+Carton with pallet,Cartons+plastic bags or as request,etc
Certificate : GB/T 19001-2016/ISO 9001:2015, CE
Application : General Industry,Heavy Industry
Surface : Plain; Black; Zinc-plated; HDG,polished,Zinc plated,Nickel-plated,as demand
Package : Eco-friendly pp bag / EPE Foam,Poly bag+Carton with pallet,Cartons+plastic bags or as request,etc
Brand Name : Ocean Century
MOQ : 1000
Price : $0.02-$1.5/piece
Packaging Details : Carton+Pallet
Delivery Time : 3-20 work days
Payment Terms : T/T, L/C, D/P, D/A
Supply Ability : 100,000pieces/day
One of our production bases specializes in cold heading, steel wire finishing and drawing, high-quality and high-precision standard and non-standard fasteners research and development, production, and sales.
The company has scientific and reasonable management, powerful technical strength, and advanced equipment. We have various metal processing technology methods, with high-precision CNC lathe, many wire drawing machine specifications, and various models of cold heading machines, etc.
We can design, produce, and process many kinds of non-standard fasteners and various American, British, and German hardware, such as bolts, nuts, shafts, pins, high-standard locating pins, and more. The materials used include carbon steel, stainless steel, copper wire, and alloy structural steel, etc. All the products are widely used in electronics, computers, home appliances, lamps and lanterns, automobiles, sports equipment, toys, new energy, and other fields.
Furthermore, we have an automatic metallographic testing machine, a tensile testing machine, a hardness tester, a salt spray testing machine, and various physical and chemical experimental devices to ensure the excellent quality of the product base material.

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Nominal Size | A | W | H | B | U | Optional | |||||
| Width Across Flats | Width Across Cormers | Head Height | WasherDiameter | Washer Thickness | Undercut Depth | Undercut Diameter | |||||
| Max. | Min. | Min. | Max. | Min. | Max. | Min. | Max. | Min. | Max. | Max. | |
| 4 | 0.188 | 0.181 | 0.202 | 0.060 | 0.049 | 0.243 | 0.225 | 0.019 | 0.011 | 0137 | .1850 |
| 6 | 0.250 | 0.244 | 0.272 | 0.093 | 0.08 | 0.328 | 0.302 | 0.025 | 0.015 | .0157 | .2523 |
| 8 | 0.250 | 0.244 | 0.272 | 0.110 | 0.096 | 0.348 | 0.322 | 0.031 | 0.019 | .0196 | .2523 |
| 10 | 0.312 | 0.305 | 0.340 | 0.120 | 0.105 | 0.414 | 0.384 | 0.031 | 0.019 | 0196 | .3203 |
| 12 | 0.312 | 0.305 | 0.340 | 0.155 | 0.139 | 0.432 | 0.398 | 0.039 | 0.022 | 0236 | .3203 |
| 1/4 | 0.375 | 0.367 | 0.409 | 0.190 | 0.172 | 0.520 | 0.480 | 0.050 | 0.030 | 0314 | .3893 |
| 5/16 | 0.500 | 0.488 | 0.544 | 0.229 | 0.207 | 0.676 | 0.624 | 0.055 | 0.035 | 0393 | .5253 |
| Nominal Size | Type BSD | |||||||||
| Threads per Inch | D | d | Z | |||||||
| Major Dia | Minor Dia | Mprotusion | Formed | Milled | ||||||
| Max. | Min. | Max. | Min. | Ref. | 90°Head | Csk Head | 90°Head | Csk Head | ||
| 4 | 24 | .114 | .110 | .086 | .082 | .163 | 5/16 | 3/8 | 3/8 | 7/16 |
| 6 | 20 | .139 | .135 | .104 | .099 | 190 | 5/16 | 3/8 | 3/8 | 7/16 |
| 8 | 18 | .166 | .161 | .122 | .116 | 211 | 3/8 | 7/16 | 7/16 | 1/2 |
| 10 | 16 | .189 | .183 | .141 | .135 | .300 | 1/2 | 9/16 | 9/16 | 21/32 |
| 12 | 14 | 215 | .209 | ,164 | .157 | .353 | 1/2 | 5/8 | 21/32 | 25/32 |
| 1/4 | 14 | 246 | 240 | .192 | .185 | 393 | 1/2 | 5/8 | 11/16 | 27/32 |
| 5/16 | 12 | .314 | .305 | .272 | 263 | 421 | 5/8 | 3/4 | ||



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