Grade 12.9 Fasteners
View 12.9 Grade Bolt Sizes and Dimensions online!
Table of Content
Grade 12.9 Fasteners Specification
12.9 Grade Bolt Sizes
M2 to M24
Class 12.9 Nuts Size
M3 – M56 | 3/6″ to 2″
Steel 12.9 Screw Size
3/6″ to 2″
12.9 Grade alloy Machine Screws Size
M1.6 – M12
Grade 12.9 Washers Size
M3 – M56 | 3/6″ to 2″
ISO Standard
ISO 3506-1
Class 12.9 screw Proof Load
970 MPa
Grade class 12.9 fasteners Length
3 mm to 200 mm
Grade 12.9 bolts Shear Strength
735 MPa
Grade 12.9 Socket Screws Standards
DIN 976, 934, 7991, 933, 931, 125 / ASME B18.2.1, B18.3
Grade 12.9 flange bolts Threads
BSW / BSF / UNF / METRIC / UNC
Custom Sizes
We are Manufacturer of Grade 12.9 Fasteners in custom sizes
Origin
Korean / Russian / Indian / European
12.9 Grade Studs Type
Tap-End / Fully or Fine threaded / Double-End
Carbon steel Grade 12.9 Bolt Condition
Threading / Cold Drawn
Manufacturing Technique
Hot forging / Cold forging / CNC Machined
DIN 7984 Grade 12.9 Screws Thread Pitch
Coarse Threads / Fine Threads
Class 12.9 fastener Finish
Passivation / HDG / Phosphating
Grade 12.9 Bolt Drive Style
- Hex
- Oval
- Truss
- Pan
- Cross
- Round
- Torx
M12 Grade 12.9 hex head bolts Head Types
- Phillips Drive
- Button head
- Hex washer head
- Slotted hex washer
- Socket cap head
- Flat
- Slotted Drive
12.9 Grade alloy screws Thread Class
- 4G
- Class 3A (Tight fit)
- Class 1A (Loose fit)
- Class 2A (Medium fit)
- 5 ONF
- 3G
- 2G
Packaging
- Wooden Pallet
- Carton Box
- Wooden Cases
- Blister Packs
Value Added Services
- Head Shank Drilling
- Laser Etching
- Head Painting
- Color Coding
Certificate
- UT and PMI Test
- Raw Materials Certificate
- 100% Radiography Test
- EN 10204/3.1B
Grade 12.9 Bolts is high strength alloy steel fastener with minimum tensile strength of 1220 MPa, Which is achieved through quenching and tempering. It is highely durable and used in application like bridges, heavy construction, and heavy machinery.
Price list of Grade 12.9 Fasteners
| Product | Price in USD (Pcs) |
Price in Dirham (Pcs) |
Price in Euro (Pcs) |
|---|---|---|---|
| M16x90 Grade 12.9 Hex Bolt, DIN 931 24.00mm | US $4.38 | 16.08 AED | € 3.73 |
| M16 Grade 12.9 Heavy Hex Bolt, DIN 934 | US $1.95 | 7.16 AED | € 1.66 |
Since their high strength is achieved through carbon content and heat treatment which lowers its ductility. Therefore they are considered as brittle.
12.9 Grade screw Chemical composition
Carbon
0.30 - 0.50
Phosphorus
0.025 (Max.)
Sulfur
0.025 (Max)
Grade class 12.9 Heavy Hex Nuts Mechanica properties
Tensile Strength
1220 MPa
Yield Strength
1100 MPa
Hardness
380 Max HB
Elongation
8 % Min
| Size (mm) | Recommended Maximum Tightening Torque (Nm) |
|---|---|
| M5 | 11.7 |
| M6 | 19.9 |
| M8 | 48.3 |
| M10 | 95.7 |
| M12 | 167 |
| M16 | 413 |
| M20 | 809 |
| M24 | 1395 |
| M30 | 2774 |
Various types of Class 12.9 fastener
Carbon steel Grade 12.9 anchor bolts
Class 12.9 heavy hex bolt
12.9 Grade alloy square nut
Grade class 12.9 hex cap screws
Grade 12.9 plain washer
12.9 Grade alloy self drilling screws
Class 12.9 square bolts
Class 12.9 stud bolt
Grade class 12.9 threaded rod
12.9 Grade hex nuts
Grade 12.9 bolts
Grade 12.9 alloy steel machine screws
Grade 12.9 alloy steel flat washer
Carbon steel Grade 12.9 socket head cap screw
12.9 Grade hex bolts
Grade 12.9 flange bolts
12.9 Grade screw
Grade 12.9 eye bolts
| Property | Grade 8.8 | Grade 12.9 |
|---|---|---|
| Strength Class | Medium strength | Ultra high strength |
| Material | Medium carbon steel | Alloy steel |
| Marking | Stamped “8.8” on head | Stamped “12.9” on head |
| Tensile Strength | 800 MPa | 1200 MPa |
| Cost | Cheaper | More expensive |
Class 12.9 Heavy Hex Bolt Dimensions
| Bolt Size | D | C (min) | B | A (max) | F Thread Length for Bolt Length |
E | ||
|---|---|---|---|---|---|---|---|---|
| 6 and shorter |
over 6 | max | min | |||||
| 1/4 | 11/64 | 0.484 | 7/16 | 0.26 | 0.75 | 1 | 0.03 | 0.01 |
| 5/16 | 7/32 | 0.552 | 1/2 | 0.324 | 0.875 | 1.125 | 0.03 | 0.01 |
| 3/8 | 1/4 | 0.62 | 9/16 | 0.388 | 1 | 1.25 | 0.03 | 0.01 |
| 7/16 | 19/64 | 0.687 | 5/8 | 0.452 | 1.125 | 1.375 | 0.03 | 0.01 |
| 1/2 | 11/32 | 0.826 | 3/4 | 0.515 | 1.25 | 1.5 | 0.03 | 0.01 |
| 5/8 | 27/64 | 1.033 | 15/16 | 0.642 | 1.5 | 1.75 | 0.06 | 0.02 |
| 3/4 | 1/2 | 1.24 | 1-1/8 | 0.768 | 1.75 | 2 | 0.06 | 0.02 |
| 7/8 | 37/64 | 1.447 | 1-5/16 | 0.895 | 2 | 2.25 | 0.06 | 0.02 |
| 1 | 43/64 | 1.653 | 1-1/2 | 1.022 | 2.25 | 2.5 | 0.09 | 0.03 |
| 1-1/8 | 3/4 | 1.859 | 1-11/16 | 1.149 | 2.5 | 2.75 | 0.09 | 0.03 |
| 1-1/4 | 27/32 | 2.066 | 1-7/8 | 1.277 | 2.75 | 3 | 0.09 | 0.03 |
| 1-3/8 | 29/32 | 2.273 | 2-1/16 | 1.404 | 3 | 3.25 | 0.09 | 0.03 |
| 1-1/2 | 1 | 2.48 | 2-1/4 | 1.531 | 3.25 | 3.5 | 0.09 | 0.03 |
| 1-3/4 | 1-5/32 | 2.893 | 2-5/8 | 1.785 | 3.75 | 4 | 0.12 | 0.04 |
| 2 | 1-11/32 | 3.306 | 3 | 2.039 | 4.25 | 4.5 | 0.12 | 0.04 |
| 2-1/4 | 1-1/2 | 3.719 | 3-3/8 | 2.305 | 4.75 | 5 | 0.19 | 0.06 |
| 2-1/2 | 1-21/32 | 4.133 | 3-3/4 | 2.559 | 5.25 | 5.5 | 0.19 | 0.06 |
| 2-3/4 | 1-13/16 | 4.546 | 4-1/8 | 2.837 | 5.75 | 6 | 0.19 | 0.06 |
| 3 | 2 | 4.959 | 4-1/2 | 3.081 | 6.25 | 6.5 | 0.19 | 0.06 |
| 3-1/4 | 2-3/16 | 5.372 | 4-7/8 | 3.335 | 6.75 | 7 | 0.19 | 0.06 |
| 3-1/2 | 2-5/16 | 5.786 | 5-1/4 | 3.589 | 7.25 | 7.5 | 0.19 | 0.06 |
| 3-3/4 | 2-1/2 | 6.198 | 5-5/8 | 3.858 | 7.75 | 8 | 0.19 | 0.06 |
| 4 | 2-11/16 | 6.612 | 6 | 4.111 | 8.25 | 8.5 | 0.19 | 0.06 |
Grade 12.9 bolt shear strength
| Shear strength | 75,000 psi (517 MPa) |
|---|
Advantages of Grade 12.9 flange bolts
Testing and inspection of 12.9 Grade alloy Studs
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