SAE J429 Grade 8 Bolts
Biggest J429 Gr 8 Studs manufacturer in India
What is SAE J429 Grade 8?
SAE J429 Grade 8 is heat treated carbon steel fastener which is typically used in high stress applications. Its known for its excellent strength. One can identify Grade 8 bolts by looking 6 radial lines on bolt head.
Table of Content
SAE J429 Grade 8 Fastener specification
Grade 8 Bolt Sizes
M2 to M24
Gr 8 Screw Size
3/6″ to 2″
SAE J429 gr 8 Nuts Size
M3 – M56 | 3/6″ to 2″
SAE J429 grade 8 Washers Size
M3 – M56 | 3/6″ to 2″
Grade 8 Machine Screws Size
M1.6 – M12
ISO Standard
ISO 3506-1
SAE J429 grade 8 Fasteners Length
3 mm to 200 mm
Grade 8 heavy hex bolt Weldability
Poor to Non-weldable
J429 gr 8 Threaded Rod Melting Point
2,570°F
Gr 8 flange bolts Threads
METRIC / BSF / UNF / BSW / UNC
SAE J429 gr 8 Hex Nuts Standards
DIN 933, 931, 7991, 934, 976, 125 / ASME B18.2.1, B18.3
Custom Sizes
We are Manufacturer of Grade 8 Bolt in custom sizes and finishes worldwide.
J429 gr 8 Studs Type
Fully or Fine threaded / Tap-End / Double-End
Origin
Korean / Russian / Indian / European
Grade 8 zinc plated bolts Condition
Threading / Cold Drawn
Manufacturing Technique
Hot forging / CNC Machined / Cold forging
SAE J429 gr 8 Screws Thread Pitch
Coarse Threads / Fine Threads
Medium carbon steel grade 8 Studs Finish
Passivation / Phosphating / HDG
J429 grade 8 Bolt Drive Style
- Pan
- Round
- Cross
- Truss
- Hex
- Torx
- Oval
SAE J429 gr 8 hex head bolts Head Types
- Slotted hex washer
- Phillips Drive
- Flat
- Button head
- Socket cap head
- Hex washer head
- Slotted Drive
Gr 8 screws Thread Class
- Class 1A (Loose fit)
- 2G
- 4G
- Class 2A (Medium fit)
- 5 ONF
- 3G
- Class 3A (Tight fit)
Packaging
- Wooden Cases
- Wooden Pallet
- Blister Packs
- Carton Box
Certificate
- 100% Radiography Test
- Raw Materials Certificate
- UT and PMI Test
- EN 10204/3.1B
Value Added Services
- Head Shank Drilling
- Head Painting
- Laser Etching
- Color Coding
We are one of the largest SAE J429 Grade 8 Bolts Manufacturer in India in different finishes and threads as per ASME B18.2.1. We have supplied these Grade 8 Nuts in UAE, Nigeria, Peru, Spain, Malaysia and Germany.
Buy Gr 8 Carbon Steel Nuts in galvanized finish, stockist of J429 Grade 8 Lag Screws in wide range of sizes
Types of SAE J429 gr 8 Fastener
SAE J429 gr 8 hex bolts
Grade 8 heavy hex bolt
gr 8 flange bolts
SAE J429 grade 8 square bolts
Grade 8 zinc plated bolts
SAE J429 gr 8 Hex Nuts
Medium carbon steel grade 8 Studs
Zinc plated grade 8 Threaded Rod
Check chemical and mechanical properties of Grade 8 Carriage Bolt and SAE J429 grade 8 steel threaded rod
J429 gr 8 chemical composition
Carbon
0.28 – 0.55%
Sulfur
0.05%
Phosphorus
0.03%
J429 Grade 8 stud mechanical properties
Tensile Strength
150,000 PSI
Yield Strength
130,000 PSI
Core Hardness
C33-C39
Proof Strength
120,000 PSI
We supply Grade 8 Carbon Steel screw with MTC certificates, View SAE J429 grade 8 size range
SAE J429 Grade 8 Fasteners Size Range
| Types | Diameter | Length |
|---|---|---|
| Hex Cap Screws | 1/4" to 1-1/2" | 1/2" to 12" |
| Hex Bolts | 1/4" to 1-1/2" | 3/4" to 24" |
| Studs | 1/4" to 1-1/2" | 1" to 36" or longer |
| Hex Nuts | 1/4" to 1-1/2" | _ |
| Washers | 1/4" to 1-1/2" ID | _ |
| Socket Head Cap Screws | 1/4" to 1" | 1/2" to 6" |
| Flange Bolts | 1/4" to 1-1/4" | 1/2" to 8" |
Grade 8 nuts and bolts Temperature range
| Temperature range | –50°C to ~250°C |
|---|
Buy J429 Gr 8 fasteners and Carbon Steel Grade 8 bolts in exact sizes directly from manufacturer
Proof load of SAE J429 grade 8 bolts
| Nominal Dia | Stress Area, in2 | Grade 8 (Proof Load, lb) |
|---|---|---|
| 1/4-20 | 0.0318 | 3800 |
| 5/16-18 | 0.0524 | 6300 |
| 3/8-16 | 0.0775 | 9300 |
| 7/16-14 | 0.1063 | 12800 |
| 1/2-13 | 0.1419 | 17000 |
| 9/16-12 | 0.182 | 21800 |
| 5/8-11 | 0.226 | 27100 |
| 3/4-10 | 0.334 | 40100 |
| 7/8-9 | 0.462 | 55400 |
| 1-8 | 0.606 | 72700 |
| 1-1/8-7 | 0.763 | 91600 |
| 1-1/4-7 | 0.969 | 116300 |
| 1-3/8-6 | 1.155 | 138600 |
| 1-1/2-6 | 1405 | 168600 |
Surface finish of SAE J429 Grade 8 Steel Bolts
| Finish Type | Corrosion Resistance |
|---|---|
| Plain | Very Low |
| Phosphate | Low |
| Zinc-Plated | Low to Medium (~24–96 hrs salt spray) |
| Hot-Dip Galvanized | High (~500–1000 hrs salt spray) |
| Cadmium Plating | Very High |
| Dacromet | High |
Zinc plated grade 8 Stud Bolts Application
| Grade | ASTM Equivalent |
|---|---|
| Grade 8 | A354 Grade BD |
| Identification - 6 Radial Lines |  |
|---|
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