S7 Fasteners
Table of Content
Steel S7 Bolt Sizes
M2 to M24
S7 Steel Nuts Size
M3 – M56 | 3/6″ to 2″
1.2355 Screw Size
3/6″ to 2″
50CrMoV13-15 Machine Screws Size
M1.6 – M12
Tool Steel S7 Washers Size
M3 – M56 | 3/6″ to 2″
ISO Standard
ISO 3506-1
S7 Steel fasteners Length
3 mm to 200 mm
Steel S7 hex bolts Wear Resistance
Moderate
DIN 1.2355 square nut Service Temperature
260–285°C
Tool Steel S7 stud bolt Condition
Threading / Cold Drawn
Origin
Korean / Indian / Russian / European
S7 Steel Studs Type
Fully or Fine threaded / Tap-End / Double-End
S7 Tool Steel anchor bolts Standards
DIN 7991, 934, 931, 976, 933, 125 / ASME B18.2.1, B18.3
Custom Sizes
We are Manufacturer of S7 Fasteners in custom sizes
S7 High Security Nuts Threads
UNF / METRIC / BSW / BSF / UNC
Manufacturing Technique
Cold forging / Hot forging / CNC Machined
S7 Material Finish
HDG / Passivation / Phosphating
Tool Steel S7 Screws Thread Pitch
Coarse Threads / Fine Threads
Packaging
- Blister Packs
- Wooden Cases
- Wooden Pallet
- Carton Box
Value Added Services
- Head Shank Drilling
- Color Coding
- Laser Etching
- Head Painting
Certificate
- 100% Radiography Test
- UT and PMI Test
- EN 10204/3.1B
- Raw Materials Certificate
50CrMoV13-15 hex head bolts Head Types
- Button head
- Hex washer head
- Socket cap head
- Slotted Drive
- Phillips Drive
- Slotted hex washer
- Flat
AISI S7 Tool Steel Bolt Drive Style
- Torx
- Round
- Hex
- Pan
- Cross
- Truss
- Oval
DIN 1.2355 screws Thread Class
- 3G
- 4G
- Class 1A (Loose fit)
- 5 ONF
- Class 2A (Medium fit)
- 2G
- Class 3A (Tight fit)
| Product | Price in USD (Pcs) |
Price in Dirham (Pcs) |
Price in Euro (Pcs) |
|---|---|---|---|
| 5/8" UNC, Hex Nut, S7 Steel, ANSI B18.2.2 | US $1.34 | 4.92 AED | € 1.14 |
| Heavy hex nuts, M24, AISI S7 Tool Steel, UNF | US $1.24 | 4.56 AED | € 1.06 |
| Property | S7 Tool Steel | 4140 Alloy Steel |
|---|---|---|
| Type | Shock resistant tool steel | Chromium-molybdenum low alloy steel |
| Hardness | 54–58 | 28–32 |
| Toughness | Exceptionally high | Good |
| Machinability | Moderate | Good |
| Heat Treatable | Yes – air hardening | Yes – oil hardening |
| Service Temperature | 1000°F | 1200°F |
| Cost | Higher | Lower |
Chemical composition of DIN 1.2355 Studs
Iron
93.85
Carbon
0.45-0.55
Manganese
0.20-0.80
Silicon
0.20-1.00
Chromium
3.00-3.50
Molybdenum
1.30-1.80
Vanadium
0.20-0.30
Copper
0.25 (Max.)
Phosphorus
0.03
Sulfur
0.03
AISI S7 Tool Steel Screws Mechanical properties
Tensile Strength
1517–1724 MPa
Yield Strength
1379–1586 MPa
Hardness
54–58 HRC
Elongation
8–10%
Equivalent grade of S7 High Security Nuts
| Grade | UNS | DIN | EN |
|---|---|---|---|
| S7 Steel | T41907 | 1.2355 | 50CrMoV13-15 |
50CrMoV13-15 Hex Nuts Physical properties
| Density | Modulus of Elasticity | Thermal Conductivity | Specific Heat |
|---|---|---|---|
| 7.83 g/cc | 207 GPa | 24 W/m·K | 460 J/kg·K |
Types of S7 Tool Steel Fasteners
Steel S7 machine screws
50CrMoV13-15 self drilling screws
S7 Tool Steel hex cap screws
S7 Steel square bolts
Tool Steel S7 stud bolt
AISI S7 Tool Steel flat washer
DIN 1.2355 hex nuts
S7 Tool Steel anchor bolts
Tool Steel S7 plain washer
50CrMoV13-15 eye bolts
DIN 1.2355 square nut
S7 Steel threaded rod
AISI S7 Tool Steel socket head cap screw
Steel S7 hex bolts
50CrMoV13-15 heavy hex bolt
| Forging | 1200°-1300°F |
|---|
| Bolt Size | Normal Fit [in] | Bolt Diameter [in] | Loose Fit [in] | Close Fit [in] |
|---|---|---|---|---|
| #0 | 0.076 | 0.06 | 0.094 | 0.067 |
| #2 | 0.102 | 0.086 | 0.116 | 0.094 |
| #4 | 0.128 | 0.112 | 0.144 | 0.12 |
| #5 | 0.156 | 0.125 | 0.172 | 0.141 |
| #6 | 0.17 | 0.138 | 0.185 | 0.154 |
| #8 | 0.196 | 0.164 | 0.213 | 0.18 |
| #10 | 0.221 | 0.19 | 0.238 | 0.206 |
| 1/4" | 0.281 | 0.25 | 0.297 | 0.266 |
| 5/16" | 0.344 | 0.3125 | 0.359 | 0.328 |
| 3/8" | 0.406 | 0.375 | 0.422 | 0.391 |
| 7/16" | 0.469 | 0.4375 | 0.484 | 0.453 |
| 1/2" | 0.562 | 0.5 | 0.609 | 0.531 |
| 5/8" | 0.688 | 0.625 | 0.734 | 0.656 |
| 3/4" | 0.812 | 0.75 | 0.906 | 0.781 |
| 7/8" | 0.938 | 0.875 | 1.031 | 0.906 |
| 1" | 1.094 | 1 | 1.156 | 1.031 |
| 1-1/8" | 1.219 | 1.125 | 1.312 | 1.156 |
| 1-1/4" | 1.344 | 1.25 | 1.438 | 1.281 |
| 1-3/8" | 1.5 | 1.375 | 1.609 | 1.438 |
| 1-1/2" | 1.625 | 1.5 | 1.734 | 1.562 |
Steel S7 Threaded Rod Heat Treatment
| Heat Treatment | 850–900°C |
|---|
Application of Tool Steel S7 Washer
Industrial Products
Types
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