309 Series Self-Tapping Threaded Inserts
309 Series Self-Tapping Threaded Inserts
Key Benefits (Bullet Points)
✅ Dual Material Options:
304 Stainless Steel (Corrosion Resistance) | H59 Brass (Electrical Conductivity & Spark-Free)
✅ Self-Tapping Design: No pre-tapping required – Cuts installation time by 50%
✅ 200% Strength Recovery: Restores damaged threads to higher-than-original strength
✅ Universal Sizing: Compatible with M3-M12 standard threads
✅ 1,000+ Reuses: 3x longer service life than standard threads
Self tapping thread insert parameter
|
Product name |
309 type Self tapping thread insert |
|
Material |
Brass/stainless steel/carbon steel |
|
Thread type |
Metric |
|
Model Number |
M2-M16/Customized |
|
Function |
Assembly, threaded connection/fastening/conversion |
|
Reliability test |
Mechanical dimentions, hardness test. salt spray endurance test |
Material Comparison Table
Table of dimensions for 309 series self-tapping threaded inserts
|
CODE |
METRIC THREAD |
SPECIAL EXTERNAL THREAD |
TOTAL LENGHT |
APPROX HOLE DIAMETER d3 |
MIN.HOLE DEPTH |
||
|
d1 |
d2 |
P |
L |
Soft Material |
Hard Material |
||
|
3090025.80--- |
M 2.5 |
5 |
1.6 |
6 |
3.5 |
3.6-3.8 |
8 |
|
3090030.80--- |
M 3 |
5.5 |
1.6 |
6 |
4.1 |
4.2-4.3 |
9 |
|
3090035.80--- |
M 3.5 |
6.5 |
1.6 |
8 |
4.6 |
4.7 -4.8 |
10 |
|
3090040.80--- |
M 4 |
7 |
2.5 |
10 |
5.1 |
5.2-5.3 |
13 |
|
3090050.80--- |
M 5 |
9 |
3 |
12 |
6.6 |
6.7-6.9 |
15 |
|
3090060.80--- |
M 6 |
10 |
4 |
14 |
7.6 |
7.7-7.9 |
17 |
|
3090080.80--- |
M 8 |
13 |
4 |
20 |
9.9 |
10.1 -10.3 |
23 |
|
3090100.80--- |
M 10 |
16 |
5 |
23 |
12.4 |
12.6-12.8 |
26 |
|
3090120.80--- |
M 12 |
19 |
5 |
26 |
15.4 |
15.6-15.8 |
30 |
|
3090140.80--- |
M 14 |
22 |
5 |
26 |
18.4 |
18.6-18.8 |
30 |
|
3090160.80--- |
M 16 |
24 |
5 |
26 |
20.4 |
20.6-20.8 |
30 |
Application Scenarios
• Industrial Repairs:
🔧 Automotive engine block threads | ⚙️ Plastic injection mold plates | 🔌 Control panel screw holes
• Key Industries:
🚗 Automotive | 🛢️ Oil & Gas | ✈️ Aerospace | 🔋 Electronics
Application Scenarios
Quick Installation:
1.Drill: Use recommended drill size (see chart below)
2.Clean: Remove debris with compressed air
3.Drive: Rotate clockwise until drive tang breaks
4.Verify: Check thread with Go/No-Go gauge
⚠️ Pro Tip: Apply thread locker for aluminum substrates
Application Scenarios
*"Using 20k+ stainless inserts annually for marine engine repairs. 100% success rate in saltwater environments over 3 years."*
– MarineTech GmbH, Germany
"Brass inserts eliminated spark risks in our explosion-proof cabinets. Passed ATEX certification effortlessly."
– ElectroSafe S.p.A., Italy