The pre-applied adhesive thread insert is designed with Loctite 243 medium-strength threadlocker applied directly to the insert threads. This eliminates the need for additional adhesive during installation while providing reliable anti-loosening performance after assembly.
Loctite 243 offers excellent vibration resistance and oil tolerance, making the insert suitable for typical industrial environments. It ensures secure thread locking while still allowing disassembly for maintenance and repair when required.
These inserts are widely used in automotive, aerospace, machinery, electronics, and industrial repair applications, especially where high assembly efficiency, consistent locking performance, and serviceability are required.
Key Features
- Pre-applied Loctite 243 medium-strength threadlocker
- No additional adhesive required during installation
- Reliable vibration and loosening resistance
- Oil-tolerant performance for industrial environments
- Removable design for maintenance and repair
- Ideal for mass production and standardized assembly
Suitable Base Materials
- Aluminum and aluminum alloys
- Magnesium alloys
- Steel
- Engineering plastics
Material Performance
AISI 303/SUS303 Mechanical Properties
|
MECHANICAL PROPERTIES |
METRIC |
INCH |
COMMENTS |
|
Hardness, Brinell |
228 |
228 |
|
|
Hardness, Knoop |
251 |
251 |
Converted from Brinell hardness |
|
Hardness, Rockwell B |
96 |
96 |
Converted from Brinell hardness |
|
Hardness, Rockwell C |
19 |
19 |
Converted from Brinell hardness |
|
Hardness, Vickers |
240 |
240 |
Converted from Brinell hardness |
|
Tensile Strength, Ultimate |
690 Mpa |
100000 psi |
|
|
Tensile Strength, Yield |
415 Mpa |
60200 psi |
At 0.2% offset |
|
Elongation at Break |
40% |
40% |
In 50 mm |
|
Modulus of Elasticity |
193 Gpa |
28000 ksi |
tension |
|
Poisson's Ratio |
0.25 |
0.25 |
Calculated |
|
Shear Modulus |
77.2 Gpa |
11200 ksi |
|
|
ELECTRICAL PROPERTIES |
METRIC |
INCH |
COMMENTS |
|
Electrical Resistivity |
7.2e-005 ohm-cm |
7.2e-005 ohm-cm |
|
|
THERMAL PROPERTIES |
METRIC |
INCH |
COMMENTS |
|
CTE, linear 20°C |
17.2 μm/m-°C |
9.56 μin/in-℉ |
From 0-100°C |
|
CTE, linear 250°C |
17.8 μm/m-°C |
9.89 μin/in-℉ |
At 0-315°C(32-600℉) |
|
CTE, linear 500°C |
18.4 μm/m-°C |
10.2 μin/in-℉ |
At 0-540°C, 18.7μm/m-C |
|
Specific Heat Capacity |
0.5 J/g-°C |
0.12 BTU/lb-℉ |
From 0-100°C(32-212℉) |
|
Thermal Conductivity |
16.2 W/m-K |
112 BTU-in |
At 100°C(212℉),21.5W/m at 500°C(930℉) |
|
Melting Point |
1400-1420°C |
2550-2590℉ |
|
|
Solidus |
1400°C |
2550℉ |
|
|
Liquidus |
1420°C |
2590℉ |
How to Install Adhesive Self Tapping Inserts
Installing Adhesive Self Tapping Inserts for metal is quick and uncomplicated, using only commonly available shop tools. The process begins by drilling a correctly sized hole, followed by tapping with a standard tap to prepare the threads. After preparation, the insert can be driven into place using a flathead screwdriver, a bolt with a jam nut, or a dedicated installation tool if required.
Unlike wire-style inserts that rely on proprietary taps and special installation equipment, Adhesive Self Tapping Inserts are engineered for simple, efficient installation. Once installed, the factory-applied adhesive is activated and cures rapidly, allowing the insert to accept a fastener within 3–5 minutes. The entire procedure is fast, intuitive, and easy to follow.
Adhesive Self Tapping Inserts feature a built-in self-locking design. As soon as the insert is installed, the pre-applied LOCTITE adhesive on the external threads begins to cure, securely locking the insert in place and making it ready for assembly in just a few minutes.
Adhesive-Coated Self Tapping Inserts Parameter
Common Metric Sizes
|
Internal Thread |
External Thread |
Length |
Pilot Hole |
STI Tap |
Min. Depth |
|
M3*0.5 |
M6*1.0 |
6.5 |
5.1 |
M6*1.0 |
7.8 |
|
M4*0.7 |
M8*1.25 |
7.5 |
6.8 |
M8*1.25 |
9.0 |
|
M5*0.8 |
M8*1.25 |
7.5 |
6.8 |
M8*1.25 |
9.0 |
|
M6*1.0 |
M10*1.5 |
10.5 |
8.6 |
M10*1.5 |
12.0 |
|
M8*1.25 |
M12*1.75 |
12.5 |
10.4 |
M12*1.75 |
14.5 |
|
M10*1.5 |
M16*2.0 |
17.0 |
14.0 |
M16*2.0 |
19.0 |
|
M12*1.75 |
M16*2.0 |
17.0 |
14.0 |
M16*2.0 |
19.0 |
|
M16*2.0 |
M24*3.0 |
20.0 |
21.0 |
M24*3.0 |
24.0 |
|
M20*2.5 |
M36*4.0 |
30.0 |
33.0 |
M36*4.0 |
35.0 |
|
M24*3.0 |
M36*4.0 |
30.0 |
33.0 |
M36*4.0 |
35.0 |
Common UNC Sizes
|
Internal Thread |
External Thread |
Length |
Pilot Hole |
STI Tap |
Min. Depth |
|
4-40 |
10-32 |
0.25 |
5/32 |
10-32 |
9/32 |
|
6-32 |
1/4-20 |
0.28 |
7 |
1/4-20 |
11/32 |
|
8-32 |
5/16-18 |
0.29 |
F |
5/16-18 |
7/16 |
|
10-24 |
3/8-16 |
0.406 |
5/16 |
3/8-16 |
15/32 |
|
1/4-20 |
7/16-14 |
0.437 |
23/64 |
7/16-14 |
1/2 |
|
1/4-20 |
7/16-14 |
1.00 |
23/64 |
7/16-14 |
1-1/8 |
|
5/16-18 |
1/2-13 |
0.484 |
27/64 |
1/2-13 |
9/16 |
|
5/16-18 |
1/2-13 |
1.00 |
27/64 |
1/2-13 |
1-1/8 |
|
3/8-16 |
9/16-12 |
0.515 |
31/64 |
9/16-12 |
19/32 |
|
3/8-16 |
9/16-12 |
1.00 |
31/64 |
9/16-12 |
1-1/8 |
|
7/16-14 |
5/8-11 |
0.656 |
17/32 |
5/8-11 |
23/32 |
|
1/2-13 |
3/4-10 |
0.656 |
21/32 |
3/4-10 |
3/4 |
|
1/2-13 |
3/4-10 |
1.00 |
21/32 |
3/4-10 |
1-1/8 |
|
9/16-12 |
3/4-10 |
0.656 |
21/32 |
3/4-10 |
3/4 |
|
5/8-11 |
7/8-9 |
0.687 |
49/64 |
7/8-9 |
13/16 |
|
5/8-11 |
7/8-9 |
1.125 |
49/64 |
7/8-9 |
1-1/4 |
|
3/4-10 |
1-8 |
0.781 |
7/8 |
1-8 |
7/8 |
|
7/8-9 |
1-1/4-7 |
1.125 |
1-7/64 |
1-1/4-7 |
1-1/4 |
|
1-8 |
1-3/8-12 |
1.250 |
1-9/32 |
1-3/8-12 |
1-3/8 |
Common UNF Sizes
|
Internal Thread |
External Thread |
Length |
Pilot Hole |
STI Tap |
Min. Depth |
|
10-32 |
3/8-16 |
0.406 |
5/16 |
3/8-16 |
15/32 |
|
1/4-28 |
7/16-14 |
0.437 |
23/64 |
7/16-14 |
1/2 |
|
5/16-24 |
1/2-13 |
0.484 |
27/64 |
1/2-13 |
9/16 |
|
3/8-24 |
9/16-12 |
0.515 |
31/64 |
9/16-12 |
19/32 |
|
7/16-20 |
5/8-11 |
0.656 |
17/32 |
5/8-11 |
23/32 |
|
1/2-20 |
3/4-10 |
0.656 |
21/32 |
3/4-10 |
3/4 |
|
9/16-18 |
3/4-10 |
0.656 |
21/32 |
3/4-10 |
3/4 |
|
5/8-18 |
7/8-9 |
0.687 |
49/64 |
7/8-9 |
13/16 |
|
3/4-16 |
1-8 |
0.781 |
7/8 |
1-8 |
7/8 |
|
7/8-14 |
1-1/4-7 |
1.125 |
1-7/64 |
1-1/4-7 |
1-1/4 |
|
1-14 |
1-3/8-12 |
1.250 |
1-9/32 |
1-3/8-12 |
1-3/8 |
Why Choose Locking Inserts Tech?
1. 17+ Years of Experience
We specialize in Key-locking, Self-Tapping, and Helical Wire Thread Inserts. Our products are precise, durable, and reliable.
2. Wide Range & Custom Options
We provide adhesive-coated inserts in metric and inch sizes. Custom threads, materials, and coatings are available.
3. Quality You Can Trust
Every batch is strictly tested: thread inspection, hardness, and coating checks, ensuring reliable performance.
Fast Delivery & Support
- In-stock: shipped same day, delivery in 5–10 days.
- Custom orders: 2-week lead time.
- OEM & technical support: installation guidance and product advice.
Delivery & Service | Locking Inserts Tech
Standard Delivery for Stock Products
For products available in our inventory, we ensure same-day dispatch. Depending on your location and chosen logistics method, delivery typically takes 5–10 business days.
01
Custom Production & Orders
For customized Loctite-Coated Inserts or non-standard specifications, our production lead time is approximately two weeks after order confirmation. We provide end-to-end support, from material selection and thread design to coating application and quality control.
02
Quality Assurance & Testing
All inserts undergo strict inspection and testing, including pull-out strength, torque resistance, and coating adhesion tests, ensuring that every piece meets industrial standards. Suggested image: Photo of lab equipment testing inserts, e.g., torque tester, pull-out test rig, or QC team inspecting products.
03
How to Order
● Select the product: Browse our catalog or contact us with your specifications.
● Confirm requirements: Quantity, thread size, coating type, and delivery date.
● Place your order: Our professional sales team will confirm lead times and shipping options.
04
Contact Us
For inquiries about Loctite-Coated Thread Inserts, pricing, or technical consultation, our team is ready to respond within 2 hours.
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