Special Metal Fasteners for High-Performance Applications
Precision-engineered fasteners manufactured from special metals to deliver durability and corrosion resistance in demanding industrial environments.
Bolts 〉
High-strength special metal bolts engineered for secure fastening in high-pressure and corrosive environments.
Nuts 〉
Precision-threaded nuts designed to provide maximum locking force and durability with reactive metal alloys.
Piping Components 〉
Check technical details on our fastening solutions, including material grades, thread specifications, and custom manufacturing options for harsh environments.
Technical Reference for Bolts & Studs
Standard Dimensions: Metric Series (M3 – M33)
| d (Nominal Size) | d1 (Basic) | d1 (Max) | B (Basic) | B (Max) | B (Min) | C (Max) | C (Min) | H (Basic) | H (Max) | H (Min) | R (Max) | R (Min) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| M3 | 3 | 3 | 2.5 | 2.48 | 2.42 | 2.8 | 2.6 | 3 | 3 | 2.75 | 0.1 | – |
| M4 | 4 | 4 | 3 | 2.98 | 2.92 | 3.8 | 3.6 | 4 | 4 | 3.7 | 0.2 | – |
| M5 | 5 | 5 | 4 | 3.98 | 3.9 | 4.7 | 4.5 | 5 | 5 | 4.7 | 0.2 | – |
| M6 | 6 | 6 | 5 | 4.98 | 4.9 | 5.8 | 5.6 | 6 | 6 | 5.7 | 0.25 | – |
| M8 | 8 | 8 | 6 | 5.98 | 5.9 | 7 | 6.8 | 8 | 8 | 7.7 | 0.4 | – |
| M10 | 10 | 10 | 8 | 7.98 | 7.9 | 9.4 | 9.2 | 10 | 10 | 9.7 | 0.4 | – |
| M12 | 12 | 12 | 10 | 9.98 | 9.9 | 11.7 | 11.4 | 12 | 12 | 11.7 | 0.6 | – |
| M14 | 14 | 14 | 12 | 11.98 | 11.9 | 14 | 13.6 | 14 | 14 | 13.7 | 0.6 | – |
| M16 | 16 | 16 | 14 | 13.98 | 13.9 | 16.3 | 15.9 | 16 | 16 | 15.7 | 0.6 | – |
| M18 | 18 | 18 | 14 | 13.98 | 13.9 | 16.3 | 15.9 | 18 | 18 | 17.7 | 0.6 | – |
| M20 | 20 | 20 | 17 | 16.98 | 16.9 | 19.8 | 19.4 | 20 | 20 | 19.7 | 0.8 | – |
| M22 | 22 | 22 | 17 | 16.98 | 16.9 | 19.8 | 19.4 | 22 | 22 | 21.7 | 0.8 | – |
| M24 | 24 | 24 | 19 | 18.98 | 18.9 | 22.1 | 21.7 | 24 | 24 | 23.7 | 0.8 | – |
| M27 | 27 | 27 | 19 | 18.98 | 18.9 | 22.1 | 21.7 | 27 | 27 | 26.7 | 1 | – |
| M30 | 30 | 30 | 22 | 21.98 | 21.9 | 25.6 | 25.1 | 30 | 30 | 29.7 | 1 | – |
| M33 | 33 | 33 | 24 | 23.98 | 23.9 | 27.9 | 27.4 | 33 | 33 | 32.7 | 1 | – |
Hexagon Head Bolts
| Item / Feature | Specifications |
|---|---|
| Size Range | M6 ~ M36 / 1/4" ~ 1/2" |
| Thread Type | Metric (Coarse / Fine) / UNC / UNF |
| Head Style | External Hex Head |
| Fastening Method | Nut Assembly |
| Length Range | 10 mm ~ 300 mm (Inch sizes available) |
| Standards | ISO 4014 / ISO 4017 / ASME B18.2.1 |
| Materials | Carbon Steel / Alloy Steel / Stainless Steel / Titanium, etc. |
| Applications | Structures, Plants, General Equipment |
Hexagon Socket Head Cap Screws (ISO 4762 / DIN 912)
| Item / Feature | Specifications |
|---|---|
| Size Range | M3 ~ M33 |
| Thread Type | Metric (Coarse / Fine) |
| Head Style | Cylindrical Head (Hex Socket) |
| Driving Tool | Allen Key (Hex Key) |
| Fastening Method | Nut Assembly or Tapped Hole |
| Length Range | 6 mm ~ 200 mm |
| Standards | ISO 4762 / DIN 912 |
| Materials | Alloy Steel / Stainless Steel / Titanium, etc. |
| Applications | Confined Spaces, High-Strength Fastening |
Tap Bolts and Machine Screws
| Item / Feature | Specifications |
|---|---|
| Size Range | M5 ~ M36 |
| Thread Type | Metric / Inch |
| Head Style | Hex Head / Socket Head |
| Fastening Method | Direct Threading into Tapped Hole |
| Nut Requirement | None (No Nut required) |
| Length Range | 10 mm ~ 200 mm |
| Standards | ISO / DIN / ASME (Varies by shape) |
| Materials | Carbon Steel / Alloy Steel / Stainless Steel / Titanium |
| Applications | Equipment Body Mounting, Housing Assemblies |
Stud Bolts (ASME B16.5 / DIN 976)
| Item / Feature | Specifications |
|---|---|
| Size Range | M8 ~ M64 / 3/8" ~ 3" |
| Thread Type | Metric / UNC / UNF |
| Shape | Headless (Continuous Thread / Double End) |
| Fastening Method | Nut + Nut Assembly |
| Standard Length | Length Series based on ASME / DIN Standards |
| Standards | ASME B16.5 / DIN 976 |
| Materials | ASTM A193 B7 / A320 L7 / Stainless Steel / Titanium |
| Applications | Flanges, Pressure Vessels, Piping Systems |
Low Profile and Custom Solutions
| Item / Feature | Specifications |
|---|---|
| Size Range | M8 ~ M30 (Non-standard) |
| Thread Type | Metric |
| Head Style | Low Profile Hex / Special Socket |
| Key Features | Easy fastening in contaminated environments |
| Driving Tool | Wrench / Allen Key |
| Standardization | Custom / Non-standard |
| Materials | Alloy Steel / Stainless Steel / Titanium |
| Applications | Sludge, Sediment, Water Treatment Facilities |
Flat Countersunk Head Screws (ISO 10642)
| Item / Feature | Specifications |
|---|---|
| Size Range | M3 ~ M24 |
| Thread Type | Metric |
| Head Style | Flat Countersunk Head |
| Driving Tool | Allen Key / Phillips (Cross Recess) |
| Fastening Method | Nut Assembly or Tapped Hole |
| Countersink Angle | 90° (Standard) |
| Standards | ISO 10642 / DIN 7991 |
| Materials | Carbon Steel / Stainless Steel / Titanium |
| Applications | Exposed Exterior Parts, Covers, Sheet Metal |
FAQ
Find clear and reliable answers to technical questions related to our R&D activities, engineering capabilities, manufacturing processes, material specifications,
and collaborative development approach. This section addresses real operating requirements across industries, providing practical insights on standards compliance, quality assurance, production lead times, customization options,
and technical support to help you make informed and confident decisions.
A: We offer fasteners in various high-performance grades, including Titanium (Grades 2, 5, 7), Tantalum, Zirconium, and Hastelloy. Each material is selected based on the specific chemical resistance and mechanical strength required for your application.
A: Yes, we can manufacture fasteners according to various international thread standards, including ISO Metric, UNC, UNF, and BPT. Our precision machining ensures perfect compatibility and structural integrity even in vibration-prone environments.
A: Absolutely. In addition to standard sizes (DIN/ASME), we specialize in custom fabrication. If you provide a technical drawing or specific dimensions, our engineering team will produce high-precision fasteners tailored to your unique system requirements.