Unibridge Hex Socket Head Cap Screw Combined with Spring Washer and Plain Washers SS304 Stainless steel Triple Combination Screw
Alloy Steel Socket Head Screws With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head. Black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. The screws with a blue-dyed finish are easy to distinguish. Zinc-flake-coated steel screws are 20 times as corrosion resistant as zinc-plated screws and comparable to Dacromet-coated screws. Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads
product description
Material: SS304 stainless steel, Alloy Steel；The more is carbides content, the better is the ablation resistance
Design: Hex socket head cap screw design offers greater torque-bearing capacity and precise fastening.
Combination: The triple combination with a spring washer and a plain washer provides additional anti-loosening properties, ensuring the stability and reliability of connections.
Applications: Suitable for a variety of industrial environments, including but not limited to machinery manufacturing, construction, marine, automotive, and aerospace industries.
Advantages: The SS304 stainless steel material ensures long-term stability and durability even in harsh environments, while the combination of spring and plain washers offers additional anti-loosening protection.
Product Specifications:
Bolt Size: Available in various sizes to meet different application requirements.
Surface Treatment: Typically bright or matte finish,Black-oxide or Zinc-plated can be suit different aesthetic and functional needs.
Thread Type: Standard or special threads to accommodate various fastening requirements.
Installation Instructions:
Ensure that threads and mating surfaces are clean and free from oil or dirt.
Use appropriate tools for installation to avoid damaging threads.
Tighten to the recommended torque values to prevent over-tightening or loosening.
Packaging and Storage:
Usually provided in small or bulk packaging to protect the product from damage.
Store in a dry, well-ventilated environment to avoid direct exposure to moisture or corrosive conditions.
This triple combination screw is an indispensable choice for many engineering projects due to its outstanding performance and versatility.
More Details
Product parameters
| Flat wash Size | 3 | 4 | 5 | 6 | 8 | 10 | |
| d | max | 2.83 | 3.78 | 4.75 | 5.71 | 7.64 | 9.59 |
| dc | max | 7 | 9 | 10 | 12 | 16 | 20 |
| h | Nominal Size | 0.5 | 0.8 | 1 | 1.6 | 2 | 2.5 |
| spring lock washer Size d | 3 | 4 | 5 | 6 | 8 | 10 | |
| d | min | 2.69 | 3.6 | 4.45 | 5.41 | 7.28 | 9.23 |
| h | Nominal Size | 0.8 | 1.1 | 1.3 | 1.6 | 2 | 2.5 |
| n | Nominal Size | 1.2 | 1.5 | 2 | 2.5 | 3 | 3.7 |
| H | min=nominal size | 1.6 | 2.2 | 2.6 | 3.2 | 4 | 5 |
| dc | Ref. | 5.23 | 6.78 | 8.75 | 10.71 | 13.64 | 16.59 |
| SCREW Thread Size d | M3 | M4 | M5 | M6 | M8 | M10 | |
| P | Coarse thread Pitch | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 |
| dk | plain head | 5.5 | 7 | 8.5 | 10 | 13 | 16 |
| knurled heads | 5.68 | 7.22 | 8.72 | 10.22 | 13.27 | 16.27 | |
| e | min | 2.87 | 3.44 | 4.58 | 5.72 | 6.86 | 9.15 |
| k | max | 3 | 4 | 5 | 6 | 8 | 10 |
| min | 2.86 | 3.82 | 4.82 | 5.7 | 7.64 | 9.64 | |
| s | Nominal Size | 2.5 | 3 | 4 | 5 | 6 | 8 |
| min | 2.52 | 3.02 | 4.02 | 5.02 | 6.02 | 8.025 | |
| max | 2.58 | 3.08 | 4.095 | 5.14 | 6.14 | 8.175 | |
| t | min | 1.3 | 2 | 2.5 | 3 | 4 | 5 |
| w | min | 1.15 | 1.4 | 1.9 | 2.3 | 3 | 4 |
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