English
Brand Name: KernalCoil Thread Insert
Material: Stainless steel 304/316
Surface Treatment: Stainless Steel-Passivated
Type: Imprial Unified Coarse/Unified Fine
Place of Origin: Shenzhen, Guangdong
Reliability Test: Dimensions, hardness test, Salt spray endurance test
OEM/ODM Service: Acceptable
Certification: ISO 9001:2015, IATF 16949:2016, SGS
Application: Aviation, Automotive, Machinery, Motorsport and other industry
Lead Time: Standard Inserts in stock
Packing: Paper packing or Plastic packing+Carton packing+Wooden packing
Price Terms: EXW/FOB/CIF/CFR/FCA/CPT/CIP etc.
Detail
Precision-engineered stainless steel inserts with diamond-shaped profiles, cold-formed into helical springs. Designed for permanent installation in threaded bases to enhance joint integrity across materials.
Key Features:
High-Performance Bonding: Withstands shock, vibration, and thermal cycling while distributing thread stress evenly.
Thread Restoration: Repairs stripped or damaged metric/imperial threads to original specifications.
Durability: Superior wear resistance and precision alignment for aerospace, automotive, and industrial equipment.
Applications:
Metric-to-imperial thread conversion
Thread reinforcement in soft metals or high-torque assemblies
Maintenance of legacy machinery requiring OEM thread dimensions
Tangless Thread Inserts Advantages:
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Damage-resistant design: Eliminates installation tangs and fracture grooves.
-
Military compliance: Meets NASM8846/NAS1130 specifications for defense applications.
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Cost-efficient: Minimizes labor time for installation and inspection.
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Omnidirectional installation: No orientation required.
-
Reversible removal: Safeguards casting integrity during extraction.
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Versatile toolkits: Pneumatic/electric drivers with batch-installation fixtures for high-volume projects.
As a high-performance thread fastening solution, the tangless wire insert is widely used in the following core industrial fields due to its shank-less design, bi-directional mounting characteristics and excellent mechanical properties:
1. Automobile manufacturing
In the production of new energy vehicles and traditional vehicles, it is used in key parts such as engine block, transmission housing, chassis suspension system, etc., to meet the demand for thread reinforcement of lightweight aluminum alloy parts, and significantly improve the anti-vibration and fatigue performance of connection points.
2. Aerospace
Applicable to high-temperature alloy components of aircraft engines and precision components of flight control systems. ISO 9001/AS9100 certified materials ensure structural integrity in extreme temperature and high pressure environments.
3. Energy equipment
Used in the manufacture of wind turbine spindles, nuclear power valve systems, and power transmission equipment, its corrosion-resistant properties (in accordance with EN 1663) can cope with salt spray, chemical media and other harsh working conditions.
4. High-end manufacturing
- Rail transportation: high-speed rail bogie, braking system key connection point
- Medical devices: CT machine rotating parts, surgical robots, precision transmission structure.
- Electronic communication: 5G base station heat dissipation module, server rack thread repair.
5. Heavy industry
In the hydraulic system of construction machinery and harbor lifting equipment, the wear resistance tested by ASTM F2281 can withstand impact loads of more than 200MPa and extend the equipment overhaul cycle.
The product has become the preferred solution for ISO 26262/IEC 61508 and other safety-critical system certified parts by optimizing the thread stress distribution (3-5 times fatigue life enhancement compared with traditional threads) and combining with FOD prevention and control design.
|
Thread |
Nominal Length |
Free Outer Diameter |
Number of Free Coils |
|||||||||
|
Length of Insert (in Diameter) |
Nominal Length Diameter |
|||||||||||
|
1 |
1.5 |
2 |
2.5 |
3 |
Min. |
Max. |
1 |
1.5 |
2 |
2.5 |
3 |
|
|
Unified Coarse |
||||||||||||
|
1-64 |
0.073 |
0.110 |
0.146 |
0.182 |
0.219 |
0.095 |
0.103 |
2-3/4'' |
4-7/8'' |
6-7/8'' |
8-7/8'' |
10-7/8'' |
|
2-56 |
0.086 |
0.129 |
0.172 |
0.215 |
0.258 |
0.11 |
0.119 |
3 |
5-1/4'' |
7-3/8'' |
9-5/8'' |
11-7/8'' |
|
3-48 |
0.099 |
0.148 |
0.198 |
0.248 |
0.297 |
0.128 |
0.139 |
2-7/8'' |
5 |
7-1/4'' |
9-3/8'' |
11-1/2'' |
|
4-40 |
0.112 |
0.168 |
0.224 |
0.28 |
0.336 |
0.144 |
0.159 |
2-3/4'' |
4-3/4'' |
6-3/4'' |
8-7/8'' |
10-7/8'' |
|
5-40 |
0.125 |
0.188 |
0.250 |
0.312 |
0.375 |
0.158 |
0.173 |
3-1/4'' |
5-1/2'' |
7-3/4'' |
10 |
12-1/4'' |
|
6-32 |
0.138 |
0.207 |
0.276 |
0.345 |
0.414 |
0.178 |
0.193 |
2-3/4'' |
4-3/4'' |
6-7/8'' |
8-7/8'' |
10-7/8'' |
|
8-32 |
0.164 |
0.246 |
0.328 |
0.41 |
0.492 |
0.205 |
0.220 |
3-1/2'' |
6 |
8-3/8'' |
10-3/4'' |
13-1/4'' |
|
10-24 |
0.190 |
0.285 |
0.380 |
0.475 |
0.570 |
0.244 |
0.259 |
2-7/8'' |
5 |
7-1/8'' |
9-1/4'' |
11-3/8'' |
|
12-24 |
0.216 |
0.324 |
0.432 |
0.54 |
0.648 |
0.270 |
0.285 |
3-1/2'' |
6 |
8-3/8'' |
10-5/8'' |
13-1/8'' |
|
1/4''-20 |
0.250 |
0.375 |
0.500 |
0.625 |
0.750 |
0.310 |
0.330 |
3-3/8'' |
5-3/4'' |
8 |
10-3/8'' |
12-3/4'' |
|
5/16''-18 |
0.312 |
0.469 |
0.625 |
0.781 |
0.938 |
0.380 |
0.400 |
4 |
6-5/8'' |
9-1/4'' |
11-7/8'' |
14-5/8'' |
|
3/8''-61 |
0.375 |
0.562 |
0.750 |
0.938 |
1.125 |
0.452 |
0.472 |
4-3/8'' |
7-1/4'' |
10 |
12-7/8'' |
15-3/4'' |
|
7/16''-14 |
0.438 |
0.656 |
0.875 |
1.094 |
1.312 |
0.526 |
0.551 |
4-1/2'' |
7-3/8'' |
10-1/4'' |
13-1/8'' |
16-1/8'' |
|
1/2''-13 |
0.500 |
0.750 |
1.000 |
1.250 |
1.500 |
0.597 |
0.662 |
4-7/8'' |
7-7/8'' |
11 |
14-1/8'' |
17-1/8'' |
|
9/16''-12 |
0.562 |
0.844 |
1.125 |
1.406 |
1.688 |
0.669 |
0.694 |
5-1/8'' |
8-1/4'' |
11-1/2'' |
14-3/4'' |
17-7/8'' |
|
5/8''-11 |
0.625 |
0.938 |
1.250 |
1.562 |
1.875 |
0.742 |
0.767 |
5-1/4'' |
8-1/2'' |
11-3/4'' |
15 |
18-3/8'' |
|
3/4''-10 |
0.750 |
1.125 |
1.500 |
1.875 |
2.250 |
0.881 |
0.906 |
5-7/8'' |
9-3/8'' |
13 |
16-1/2'' |
20-1/8'' |
|
7/8''-9 |
0.875 |
1.312 |
1.750 |
2.188 |
2.625 |
1.022 |
1.052 |
6-1/4'' |
10 |
13-3/4'' |
17-1/2'' |
21-1/4'' |
|
1-8 |
1.000 |
1.500 |
2.000 |
2.500 |
3.000 |
1.166 |
1.196 |
6-3/8'' |
10-1/8'' |
14 |
17-3/4'' |
21-5/8'' |
|
1-1/8''-7 |
1.125 |
1.688 |
2.250 |
2.812 |
3.375 |
1.315 |
1.355 |
6-1/8'' |
9-7/8'' |
13-5/8'' |
17-1/2'' |
21-1/4'' |
|
1-1/4''-7 |
1.250 |
1.875 |
2.500 |
3.125 |
3.750 |
1.443 |
1.483 |
7 |
11-1/4'' |
15-3/8'' |
19-1/2'' |
23-3/4'' |
|
1-3/8''-6 |
1.375 |
2.062 |
2.750 |
3.438 |
4.125 |
1.598 |
1.643 |
6-1/2'' |
10-1/2'' |
14-3/8'' |
18-3/8'' |
22-1/4'' |
|
1-1/2''-6 |
1.500 |
2.250 |
3.000 |
3.750 |
4.500 |
1.727 |
1.772 |
7-1/4'' |
11-1/2'' |
15-7/8'' |
20-1/8'' |
24-1/2'' |