AISI 4340 Fasteners
Table of Content
AISI 4340 fasteners specification
Bolt Sizes
M2 to M24
Screw Size
3/6″ to 2″
Nuts Size
M3 – M56 | 3/6″ to 2″
Washers Size
M3 – M56 | 3/6″ to 2″
Machine Screws Size
M1.6 – M12
ISO Standard
ISO 3506-1
fasteners Length
3 mm to 200 mm
Weldability
Excellent
Specific Heat
500 J/kg·K
Threads
UNF / BSW / BSF / METRIC / UNC
Standards
DIN 931, 933, 934, 7991, 976, 125 / ASME B18.2.1, B18.3
Custom Sizes
We are Manufacturer of AISI 4340 Fasteners in custom sizes
Studs Type
Tap-End / Fully or Fine threaded / Double-End
Origin
Indian / Russian / Korean / European
Condition
Threading / Cold Drawn
Manufacturing Technique
CNC Machined / Hot forging / Cold forging
Screws Thread Pitch
Coarse Threads / Fine Threads
Finish
Phosphating / Passivation / HDG
Bolt Drive Style
- Cross
- Truss
- Torx
- Round
- Hex
- Oval
- Pan
hex head bolts Head Types
- Phillips Drive
- Button head
- Slotted Drive
- Socket cap head
- Flat
- Hex washer head
- Slotted hex washer
screws Thread Class
- 3G
- 4G
- 2G
- 5 ONF
- Class 2A (Medium fit)
- Class 3A (Tight fit)
- Class 1A (Loose fit)
Packaging
- Wooden Pallet
- Carton Box
- Wooden Cases
- Blister Packs
Certificate
- Raw Materials Certificate
- EN 10204/3.1B
- 100% Radiography Test
- UT and PMI Test
Value Added Services
- Head Shank Drilling
- Head Painting
- Color Coding
- Laser Etching
Steel 4340 fasteners Price list
| Product | Price in USD (Pcs) |
Price in Dirham (Pcs) |
Price in Euro (Pcs) |
|---|---|---|---|
| M16x320 SHCS SCREWS Steel 4340 | US $0.42 | 1.55 AED | € 0.36 |
| SCREW HEX HEAD M6x40 SAE 4340 ZINC | US $0.15 | 0.56 AED | € 0.13 |
Manufacturing Range of SAE 4340 Hex Bolts
| Diameter | Length | Thread Types | Standards | Surface Treatments |
|---|---|---|---|---|
| M6 to M64 | 10 mm to 500 mm | UNC UNF Metric Coarse |
ASME B18.2.1 ISO 4014 DIN 931 |
Black oxide Phosphate coating Zinc plating |
4340 alloy steel studs chemical composition
Nickel
1.65 - 2.00
Chromium
0.7 - 0.9
Manganese
0.6 - 0.8
Carbon
0.37 - 0.43
Molybdenum
0.2 - 0.3
Silicon
0.15 - 0.3
Sulfur
0.04
Phosphorous
0.035
4340 steel Screws mechanical properties
Tensile Strength
745 MPa
Yield strength
470 MPa
Hardness
240 Max HB
Elongation
22 % Min
Alloy 4340 Hex Nuts equivalent grade
| Grade | DIN | JIS | EN | UNS |
|---|---|---|---|---|
| 4340 | 1.6511 | SNCM 439 | 36CrNiMo4 | G43400 |
UNS G43400 Threaded Rod physical properties
| Density | Melting point | Bulk modulus | Elastic modulus |
|---|---|---|---|
| 7.85 g/cm3 | 1427°C | 140 GPa | 190-210 GPa |
Thermal Properties of WNR 1.6511 Hex Cap Screws
| Properties | Metric |
|---|---|
| Thermal expansion co-efficient | 12.3 µm/m°C |
| Thermal conductivity (typical steel) | 44.5 W/mK |
SAE 4340 socket head cap screw
Alloy 4340 square bolts
4340 alloy steel heavy hex bolt
4340 steel square nut
AISI 4340 hex nuts
DIN 1.6511 flat washer
AISI 4340 steel machine screws
Steel 4340 stud bolt
UNS G43400 plain washer
Steel 4340 self drilling screws
4340 steel anchor bolts
DIN 1.6511 threaded rod
AISI 4340 hex cap screws
SAE 4340 hex bolts
UNS G43400 eye bolts
Alloy 4340 Threaded Rod Dimensions
| Nominal Size | Diameter, D | Nut End Minimum Full Thread Length, Bmin | Umax = 2 Thread Pitches | ||||
|---|---|---|---|---|---|---|---|
| L > 16 | 10 > L ≤ 16 | L ≤ 10 | 8UN Threads | UNF Threads | UNC Threads | ||
| 1/4 | 0.25 | 1.5 | 1 | 0.75 | - | 0.071 | 0.1 |
| 5/16 | 0.3125 | 1.625 | 1.125 | 0.875 | - | 0.083 | 0.111 |
| 3/8 | 0.375 | 1.75 | 1.25 | 1 | - | 0.083 | 0.125 |
| 7/16 | 0.4375 | 1.875 | 1.375 | 1.125 | - | 0.1 | 0.143 |
| 1/2 | 0.5 | 2 | 1.5 | 1.25 | - | 0.1 | 0.154 |
| 9/16 | 0.5625 | 2.125 | 1.625 | 1.375 | - | 0.111 | 0.167 |
| 5/8 | 0.625 | 2.25 | 1.75 | 1.5 | - | 0.111 | 0.182 |
| 3/4 | 0.75 | 2.5 | 2 | 1.75 | - | 0.125 | 0.2 |
| 7/8 | 0.875 | 2.75 | 2.25 | 2 | - | 0.143 | 0.222 |
| 1 | 1 | 3 | 2.5 | 2.25 | - | 0.167 | 0.25 |
| 1 1/8 | 1.125 | 3.25 | 2.75 | 2.5 | 0.25 | 0.167 | 0.286 |
| 1 1/4 | 1.25 | 3.5 | 3 | 2.75 | 0.25 | 0.167 | 0.286 |
| 1 3/8 | 1.375 | 3.75 | 3.25 | 3 | 0.25 | 0.167 | 0.333 |
| 1 1/2 | 1.5 | 4 | 3.5 | 3.25 | 0.25 | 0.167 | 0.333 |
| 1 5/8 | 1.625 | 4.25 | 3.75 | 3.5 | 0.25 | - | - |
| 1 3/4 | 1.75 | 4.5 | 4 | 3.75 | 0.25 | - | 0.4 |
| 1 7/8 | 1.875 | 4.75 | 4.25 | 4 | 0.25 | - | - |
| 2 | 2 | 5 | 4.5 | 4.25 | 0.25 | - | 0.444 |
| 2 1/4 | 2.25 | 5.5 | 5 | 4.75 | 0.25 | - | 0.444 |
| 2 1/2 | 2.5 | 6 | 5.5 | 5.25 | 0.25 | - | 0.5 |
| 2 3/4 | 2.75 | 6.5 | 6 | 5.75 | 0.25 | - | 0.5 |
| 3 | 3 | 7 | 6.5 | - | 0.25 | - | 0.5 |
| 3 1/4 | 3.25 | 7.5 | 7 | - | 0.25 | - | 0.5 |
| 3 1/2 | 3.5 | 8 | 7.5 | - | 0.25 | - | 0.5 |
| 3 3/4 | 3.75 | 8.5 | 8 | - | 0.25 | - | 0.5 |
| 4 | 4 | 9 | 8.5 | - | 0.25 | - | 0.5 |
| Thread size d | dw, Min. | p | e, Min | m, Min. | s | m | ||
|---|---|---|---|---|---|---|---|---|
| Nominal Size = Max | Min | Nominal Size = Max | Min | |||||
| M 12 | 20 | 1.75 | 23.91 | 7.71 | 22 | 21.16 | 10 | 9.64 |
| M 16 | 25 | 2 | 29.56 | 9.84 | 27 | 26.16 | 13 | 12.3 |
| M 20 | 30 | 2.5 | 35.03 | 11.92 | 32 | 31 | 16 | 14.9 |
| M 22 | 34 | 2.5 | 39.55 | 13.52 | 36 | 35 | 18 | 16.9 |
| M 24 | 39 | 3 | 45.2 | 14.16 | 41 | 40 | 19 | 17.7 |
| M 27 | 43.5 | 3 | 50.85 | 16.56 | 46 | 45 | 22 | 20.7 |
| M 30 | 47.5 | 3.5 | 55.37 | 18.16 | 50 | 49 | 24 | 22.7 |
| M 36 | 57 | 4 | 66.44 | 22.16 | 60 | 58.8 | 29 | 27.7 |
Heat Treatment and Forging of AISI 4340 Machine Screws
| Heat Treatment | Forging |
|---|---|
| 830°C | 427 to 1233°C |
WNR 1.6511 Heavy Hex Bolts Annealing
| Annealing | 844°C (1550°F) |
|---|
Material Testing of AISI 4340 fasteners
Industrial Products
Types
Why Choose Us
Tools and Downloads
