AISI 4140 fasteners
UNS G41400 Bolts and Nuts Manufacturer in India
Table of Content
AISI 4140 Fasteners Specification
Alloy 4140 Bolt Sizes
M2 to M24
AISI 4140 Screw Size
3/6″ to 2″
SAE 4140 Nuts Size
M3 – M56 | 3/6″ to 2″
4140 Steel Machine Screws Size
M1.6 – M12
DIN 1.7218 Washers Size
M3 – M56 | 3/6″ to 2″
ISO Standard
ISO 683-18
Origin
Korean / Russian / Indian / European
AISI 4140 hex bolts Condition
Threading / Cold Drawn
42CrMo4 Studs Type
Double-End / Fully or Fine threaded / Tap-End
DIN 1.7218 fasteners Length
3 mm to 200 mm
SAE 4140 Thermal Conductivity
42.6 W/m·K at 100 °C
JIS SCM440 Melting Point
1416–1470 °C
UNS G41300 Screws Thread Pitch
Coarse Threads / Fine Threads
4140 Steel Heavy Hex Bolt Finish
Passivation / Phosphating / HDG
Manufacturing Technique
Cold forging / Hot forging / CNC Machined
42CrMo4 anchor bolts Standards
DIN 976, 931, 934, 7991, 933, 125 / ASME B18.2.1, B18.3
Custom Sizes
Reliable AISI 4140 Fasteners Manufacturer in India in custom diameters.
SAE 4140 eye bolts Threads
BSF / BSW / METRIC / UNF / UNC
DIN 1.7218 hex head bolts Head Types
- Hex washer head
- Slotted Drive
- Slotted hex washer
- Phillips Drive
- Button head
- Socket cap head
- Flat
Steel 4140 screws Thread Class
- 2G
- Class 3A (Tight fit)
- 5 ONF
- Class 1A (Loose fit)
- 3G
- 4G
- Class 2A (Medium fit)
Alloy 4140 Bolt Drive Style
- Hex
- Pan
- Round
- Oval
- Torx
- Truss
- Cross
Certificate
- Raw Materials Certificate
- EN 10204/3.1B
- UT and PMI Test
- 100% Radiography Test
Packaging
- Blister Packs
- Wooden Cases
- Carton Box
- Wooden Pallet
Value Added Services
- Head Painting
- Head Shank Drilling
- Color Coding
- Laser Etching
Refer latest price list of SAE 4140 studs, We keep ready stock of AISI 4140 washer in size range of M2 to M100
| Product | Price in USD (10 Pcs) |
Price in Dirham (10 Pcs) |
Price in Euro (10 Pcs) |
|---|---|---|---|
| M3 Hex Nuts, AISI 4140, Zinc finish | US $1.40 | 5.14 AED | € 1.20 |
| M8 x 40mm SAE 4140 Hex Head Bolt, UNF | US $6.20 | 22.77 AED | € 5.31 |
Are SAE 4130 bolts suitable for H₂S environments?
No, SAE 4130 bolts are not suitable in H₂S environments due to the higher risk of Sulfide Stress Cracking or Hydrogen Embrittlement.
| Property | AISI 4140 | AISI 4150 |
|---|---|---|
| Carbon Content | ~0.38–0.43% | ~0.48–0.53% |
| Hardness | 22–35 HRC | 28–40 HRC |
| Toughness | Better | Slightly less tough |
| Weldability | Better | Poorer |
| Machinability | Good | Fair to moderate |
DIN 1.7225 threaded rod have high yield strength and density, We export 4140 alloy steel bolts in more than 20 countries
Steel 4130 Screws chemical composition
Chromium
0.80 - 1.10
Manganese
0.75 - 1.0
Carbon
0.380 - 0.430
Silicon
0.15 - 0.30
Molybdenum
0.15 - 0.25
Sulfur
0.040
Phosphorous
0.035
Alloy 4130 Studs mechanical properties
Tensile Strength
655 MPa
Yield strength
415 MPa
Hardness
219 Max HB
Elongation
25.70 % Min
UNS G41300 Washer equivalent grade
| Standard | WNR | BS | JIS | GB |
|---|---|---|---|---|
| Grades | 1.7225 | 42CrMo4 | SCM440 | 42CrMo |
4130 steel Fasteners physical properties
| Density | Melting point | Bulk modulus | Elastic modulus | Poisson's ratio |
|---|---|---|---|---|
| 7.85 g/cm3 | 1416°C | 140 GPa | 190-210 GPa | 0.27-0.30 |
View Alloy 4140 countersunk screw weight chart and sizes, Biggest SAE 4140 fasteners supplier in Mumbai
| Nominal Size | Dia, D | Threads Per Inch | ||
|---|---|---|---|---|
| 8UN | UNC | UNF | ||
| 1/4 | 0.25 | - | 20 | 28 |
| 5/16 | 0.3125 | - | 18 | 2424 |
| 3/8 | 0.375 | - | 16 | 20 |
| 7/16 | 0.4375 | - | 14 | 20 |
| 1/2 | 0.5 | - | 13 | 1816 |
| 9/16 | 0.5625 | - | 12 | 14 |
| 5/8 | 0.625 | - | 11 | 12 |
| 3/4 | 0.75 | - | 10 | 12 |
| 7/8 | 0.875 | - | 9 | 12 |
| 1 | 1 | - | 8 | 12 |
| 1 1/8 | 1.125 | 8 | 7 | 12 |
| 1 1/4 | 1.25 | 8 | 7 | - |
| 1 3/8 | 1.375 | 8 | 6 | - |
| 1 1/2 | 1.5 | 8 | 6 | - |
| 1 5/8 | 1.625 | 8 | - | - |
| 1 3/4 | 1.75 | 8 | 5 | - |
| 1 7/8 | 1.875 | 8 | - | - |
| 2 | 2 | 8 | 4 1/2 | - |
| 2 1/4 | 2.25 | 8 | 4 1/2 | - |
| 2 1/2 | 2.5 | 8 | 4 | - |
| 2 3/4 | 2.75 | 8 | 4 | - |
| 3 | 3 | 8 | 4 | - |
| 3 1/4 | 3.25 | 8 | 4 | - |
| 3 1/2 | 3.5 | 8 | 4 | - |
| 3 3/4 | 3.75 | 8 | 4 | - |
| 4 | 4 | 8 | 4 | - |
DIN 1.7218 Heavy Hex Bolts Dimensions
| D1 | K | E | S |
|---|---|---|---|
| M20 | 12.5 | 32.95 | 30 |
| M16 | 10 | 26.17 | 24 |
| M12 | 7.5 | 20.88 | 19 |
| M10 | 6.4 | 18.72 | 17 |
| M8 | 5.3 | 14.2 | 13 |
| M6 | 4 | 10.89 | 10 |
Various types of AISI 4140 Fasteners
4140 steel socket head cap screw
Steel 4140 square bolts
Alloy 4140 heavy hex bolt
SAE 4140 square nut
Steel 4140 hex nuts
DIN 1.7218 flat washer
UNS G41300 machine screws
DIN 1.7218 stud bolt
AISI 4140 plain washer
UNS G41300 self drilling screws
42CrMo4 anchor bolts
4140 steel threaded rod
JIS SCM440 hex cap screws
AISI 4140 hex bolts
SAE 4140 eye bolts
Thermal Properties of AISI 4140 washer
| Properties | Metric |
|---|---|
| Thermal expansion coefficient (@ 0-100°C/32-212°F) | 12.2 µm/m°C |
| Thermal conductivity (@ 100°C) | 42.6 W/mK |
Leading exporter of Alloy 4140 steel hex nuts in UAE, Check AISI 4140 machine screws chemical and mechanical properties
4140 alloy steel bolts Heat Treatment and Forging
| Heat Treatment | Forging |
|---|---|
| 845°C (1550°F) | 926 to 1205°C |
Annealing and Tempering of JIS SCM440 Fasteners
| Annealing | Tempering |
|---|---|
| 872°C (1600°F) | 205 to 649°C (400 to 1200°F) |
Is hydrogen embrittlement a concern for 42CrMo4 Threaded Rod?
Yes, due to high tensile property of AISI 4140 threaded rod it is susceptible to hydrogen embrittlement.
Can AISI 4140 fasteners be machined easily?
It is fairly easy to machine AISI 4140 fasteners depending on material condition.
| Condition | Machinability |
|---|---|
| Annealed | Good |
| Normalized | Moderate |
| Quenched & Tempered | Tougher machining |
| Hardened | Difficult |
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