English
Brand Name: KernalCoil Thread Insert
Place of Origin: Shenzhen, China
Material: Carbon Steel
Characteristic: No need to pre-tap threads, can be directly screwed into the substrate to form high-precision internal threads.
Suitable Substrates: Aluminum, cast iron, soft steel, copper alloys and engineering plastics
Applications: Automotive parts, home appliance manufacturing, machinery and equipment
Support Service: OEM/ODM Custom Service Support
Term of Trade: EXW/FOB/CIF/DDP
Installation Tool: Supports dedicated mounting wrenches or power tools
Thread Type: Metric/Imperial/Fine Thread/Coarse Thread
Certification: ISO 9001:2015, IATF 16949:2016, SGS
Surface Treatment: Galvanized/Blackened/Electroplated
Detail
Technical Specifications：
Material: Surface-hardened steel with zinc/nickel plating (corrosion-resistant coatings available)
Design: Integrated cutting flutes for chip evacuation
Compatibility: Optimized for aluminum alloys, cast metals, engineered plastics & composite materials
Key Advantages：
Instant Thread Formation - Eliminates pre-tapping with self-centering cutting edges
Vibration-Proof Locking - Helical grooves prevent loosening in dynamic environments (MIL-STD-1312 compliant)
Enhanced Durability - 45-55 HRC surface hardness withstands 10,000+ insertion cycles
Cross-Platform Use - Compatible with standard hex drivers (metric/imperial sizes)
Industrial Applications：
CNC machining fixtures
Automotive powertrain components
Polymer injection molds
Heavy equipment assemblies
Available Finishes:
Zinc-plated with blue chromate
Nickel alloy coating
Yellow dichromate passivation
Ideal for high-torque applications requiring permanent, reusable threads in soft substrates.
Manual Method
Align cutting slots downward (▲ Fig A)
Drive until 0.1-0.2mm below surface
Verify vertical alignment with level
Emergency Setup
• Use M6 bolt/washer combo
• Apply threadlocker → Torque to 8-10 N·m
• Remove hardware post-install
Critical Notes
⚠ Maintain chip clearance path (▼ Fig B)
⚠ Avoid power tool impacts (max 800 RPM)
⚠ Confirm full thread engagement
DIN 7964 compliant installation protocol
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UNC/UNF Inch Series Carbon Steel Self Tapping Thread Inserts |
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Internal Thread |
External Thread |
Length |
Guideline values for receiving hole diameter |
Minimum borehole depth for blind holes |
|
|
UNC |
A |
E |
P |
B |
L |
T |
|
4-40 |
5 |
0.5 |
6 |
4.5-4.8 |
8 |
|
|
6-32 |
6 |
0.75 |
8 |
5.6-5.7 |
10 |
|
|
8-32 |
6.5 |
0.75 |
8 |
6.1-6.2 |
10 |
|
|
10-32 |
8 |
1 |
10 |
7.5-7.6 |
13 |
|
|
1/4''-20 |
10 |
1.5 |
14 |
9.2-9.4 |
17 |
|
|
5/16''-18 |
12 |
1.5 |
15 |
11.2-11.4 |
18 |
|
|
3/8''-16 |
14 |
1.5 |
18 |
13.2-13.4 |
22 |
|
|
7/16''-14 |
16 |
1.5 |
22 |
15.2-15.4 |
26 |
|
|
1/2''-13 |
18 |
1.5 |
22 |
17.2-17.4 |
26 |
|
|
5/8''-11 |
20 |
1.5 |
22 |
19.2-19.4 |
26 |
|
|
UNF |
4-48 |
5 |
0.5 |
6 |
4.5-4.8 |
8 |
|
6-40 |
6 |
0.75 |
8 |
5.6-5.7 |
10 |
|
|
8-36 |
6.5 |
0.75 |
8 |
6.1-6.2 |
10 |
|
|
10-32 |
8 |
1 |
10 |
7.5-7.6 |
13 |
|
|
1/4''-28 |
10 |
1.5 |
14 |
9.2-9.4 |
17 |
|
|
5/16''-24 |
12 |
1.5 |
15 |
11.2-11.4 |
18 |
|
|
3/8''-24 |
14 |
1.5 |
18 |
13.2-13.4 |
22 |
|
|
7/16''-20 |
16 |
1.5 |
22 |
15.2-15.4 |
26 |
|
|
1/2''-20 |
18 |
1.5 |
22 |
17.2-17.4 |
28 |
|
|
5/8''-18 |
20 |
1.5 |
22 |
19.8-19.4 |
27 |
|