Engineered fasteners for demanding industrial applications

graciaguan@vip.sina.com +86 138 1836 1726
Caifu Mechanical
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SHANGHAI CAIFU · SINCE 2011

PRODUCTS

Built on engineering, not catalogue limits.

Standard and non-standard fasteners — drawing-based supply. Final selection is confirmed against industry, standard, grade, and drawing.

  • Founded 2011
  • HQ in Shanghai
  • Production Base in Zhejiang
  • ISO 9001 Certified
Specialty Focus
16 Years
Industrial Applications
6 Sectors
Diameter Capability
M10–M100
Rail Validation
1.35M km
Aerospace Record
0 Complaints
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Product Categories

High-strength Fasteners

Hex bolts · Socket bolts · Studs

10.9/12.9 · M10–M100 GB/DIN/ASME/ISO

10.9/12.9 Hexagon Head Bolt
10.9/12.9 Hexagon Head Bolt
10.9 Hexagon Head Flange Bolt
10.9 Hexagon Head Flange Bolt
10.9 Hexagon Flange Bolt with Serrated Flange
10.9 Hexagon Flange Bolt with Serrated Flange
10, 12 C Hexagon Nuts
10, 12 C Hexagon Nuts
10.9C Pivot Bolt
10.9C Pivot Bolt
10.9/ 12.9 Socket Bolt
10.9/ 12.9 Socket Bolt
10.9/ 12.9 T Bolt
10.9/ 12.9 T Bolt
10.9 Hexagon Head Bolt with Drilled Head
10.9 Hexagon Head Bolt with Drilled Head
10.9 Stud Bolt
10.9 Stud Bolt
10.9 Taper Bolt
10.9 Taper Bolt
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Engineered Components

Special geometry · Multiple finishes

Custom design · T1 prototype → Pilot → Mass production

Dowel Pin
Dowel Pin
8.8 / 10.9 Stud Bolt-spc
8.8 / 10.9 Stud Bolt-spc
Non-Standard Reamed Hole Bolt, Locally Hardened
Non-Standard Reamed Hole Bolt, Locally Hardened
8.8 Eye Bolt
8.8 Eye Bolt
Class 8 / 10 Round Nut
Class 8 / 10 Round Nut
Non-Standard Bolts for Powder Metallurgy Dies
Non-Standard Bolts for Powder Metallurgy Dies
10.9 Wheel Studs
10.9 Wheel Studs
10.9 Custom Studs
10.9 Custom Studs
8.8 / 10.9 T Bolt
8.8 / 10.9 T Bolt
10.9 Hexagon Flange Nut
10.9 Hexagon Flange Nut
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Heavy Duty & Large-diameter Bolting

High load · Industrial assemblies

Up to 1,000 mm (hex/socket) · Up to 8,000 mm (studs)

8.8 / 10.9 M90 Stud Bolt-spc
8.8 / 10.9 M90 Stud Bolt-spc
8 / 10C M140 Adjusting Nut / Take-up Nut
8 / 10C M140 Adjusting Nut / Take-up Nut
8.8 / 10.9C Custom Large-Diameter Studs
8.8 / 10.9C Custom Large-Diameter Studs
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Mating Parts

Nuts · Sleeves · Washers

Surface Treatment: Plain · Dacromet® · Magni® · Geomet · Mechanical zinc diffusion · Composite · Black oxide · Zinc plating · Hot-dip galvanizing · Stainless

Bolt Bushing
Bolt Bushing
per 8.8 / 10.9 Thread Insert
per 8.8 / 10.9 Thread Insert
Hex Head Plug
Hex Head Plug
10C Hexagon Nut with Nylon Insert
10C Hexagon Nut with Nylon Insert
10C Hexagon Slotted and Castle Nut
10C Hexagon Slotted and Castle Nut
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Assembly System

Tensioning components · System parts · Special assemblies

Engineered for high-vibration and high-preload applications

Multi-jackbolt tensioning system and accessories — reference 1
Multi-jackbolt tensioning system and accessories — reference 2
Multi-jackbolt tensioning system and accessories — reference 3
Multi-jackbolt tensioning system and accessories — reference 4
Multi-jackbolt tensioning system and accessories — reference 5

8/ 10C Multi-Jackbolt Tensioners / Tensioning Nuts and Accessories: Sizes M36–M140

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Non-standard Customization

Special studs · Shaft bolts

Long length · Small batch · Custom thread Build-to-print · Multi-variety · Small-batch accepted

10.9 Hexagon Joint Bolt
10.9 Hexagon Joint Bolt
10.9 Wheel Rim Bolt
10.9 Wheel Rim Bolt
10.9 12-Point Flange Head Joint Bolt
10.9 12-Point Flange Head Joint Bolt
Square Head Reamed Hole Bolt
Square Head Reamed Hole Bolt
Titanium Alloy Hexagon Head Bolts
Titanium Alloy Hexagon Head Bolts
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Start a Project

Bring us the drawing, specification or operating problem.

Share the application, quantity, material, grade, finish, drawing and delivery target. We will use those details to frame the next technical conversation.

Emailgraciaguan@vip.sina.com
Phone+86 138 1836 1726
OfficeRoom 803, No. 39, Lane 1200, Changqing Road, Pudong, Shanghai 200124
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