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Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Specifications
Brand Name :
TF
Model Number :
TF-009
Certification :
ISO9001
Place of Origin :
Shenzhen, China
MOQ :
1
Price :
0.10-0.60USD
Payment Terms :
T/T
Supply Ability :
10000000pieces/per month
Delivery Time :
3days/Start
Packaging Details :
Carton packaging 18*15*12cm (packaging can be customized according to customer product requirements)
Hole Type :
Blind Closed End Design / Prevents Plastic Flash into Threads
Core Advantage :
No Post-Tapping Cleanup / Protects Thread Cleanliness
Machining Process :
Swiss-Type Precision Turning / Blind Hole One-Off Machining
Material Options :
Lead-Free Eco Brass / C3604 Free-Cutting Brass
Thread Size :
M2-M6 Metric / Unified / Non-Standard Custom
Anti-Rotation Design :
External Knurling / Annular Grooves / Polygon Shape
Application Scenario :
Insert Molding / Prevents Melt Ingress
Custom Service :
Custom Service Non-Std Length / OD / Blind Hole Depth Customization
Description
Blind Threaded Brass Inserts with Closed End Design
Lead-free custom precision fasteners designed for clean injection molding applications
Blind Threaded Brass Inserts Overview
In insert molding processes, molten plastic easily seeps into the threads of through-hole nuts, requiring additional tapping cleanup operations that add cost and time. Our brass inserts with blind closed-end design structurally block plastic melt from entering the threaded area, eliminating post-processing steps while ensuring thread cleanliness and integrity for reliable screw fastening.
Precision Manufacturing Process
Using Swiss-type lathes, we complete turning, drilling, tapping, and end-face closure in a single setup, ensuring uniform bottom wall thickness with no leakage risk. The closed-end design acts as a physical barrier during insert molding, completely blocking molten plastic from entering the threaded area. After ejection, you receive finished components with clean threads requiring no secondary operations.
This design is particularly valuable for micro inserts (M2-M3) where thread cleaning is difficult and prone to damage. As a certified factory with 15 years of precision manufacturing experience serving 2,000+ global clients, we are committed to eliminating hidden costs and quality risks from your production at the design stage.
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Product Features & Advantages
Feature Advantage to You
Completely Eliminates Flash Issues Closed-end design creates a physical barrier that completely blocks plastic melt from entering the threaded area during insert molding. Eliminates post-cleaning steps, reducing manufacturing cost and improving production efficiency.
Protects Thread Precision & Cleanliness No secondary tapping required; threads remain in factory-precise condition. Ensures consistent screw fastening torque, avoiding stripping or insufficient clamping force due to incomplete cleaning.
Ideal Choice for Micro Inserts For micro threads like M2 and M2.5, cleaning easily damages thread profiles. Blind hole design fundamentally solves this issue, making it the preferred solution for precision micro assemblies.
Customizable Blind Depth & Wall Thickness We can customize blind hole depth and bottom wall thickness based on your mold design and strength requirements. Ensures anti-flash functionality without compromising overall insert strength.
15 Years Precision Turning Expertise Swiss-type lathes complete machining in one setup, ensuring uniform bottom wall thickness. IATF16949 certified quality with high batch-to-batch consistency.
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Product Specifications
Specification Item Detail / Capability Notes / Description
Blind Thread Range M2, M2.5, M3, M4, M5, M6 Common metric sizes; unified custom available
Body Size Range OD: 3mm-10mm; Length: 4mm-15mm Blind depth customizable
Bottom Wall Thickness Min 0.5mm / Adjustable per injection pressure Ensures no leakage risk
Anti-Rotation Options External Knurling / Annular Grooves / Hex Profile Multiple options available
Material Options Lead-Free Eco Brass / C3604 Free-Cutting Brass Material certs provided
Recommended Process Insert Molding / Heat Staking Blind design suitable for both
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Product Applications
  • Automotive Electronic Connectors: For sensor housings and ECU connectors where sealant or potting compound must be kept out of threads.
  • Medical Device Enclosures: For monitor and diagnostic equipment housings requiring clean internal threads for sterilization readiness.
  • High-End Consumer Electronics: For threaded connection points in smartphone frames and tablet back covers that must be used directly after insert molding.
Frequently Asked Questions
Can you handle complex custom designs and provide design optimization suggestions?
Absolutely. This is our core expertise. We provide free DFM analysis within 3-5 days, often helping clients achieve 15-30% cost reduction through design for manufacturability.
How do you ensure quality consistency and handle defect issues?
We implement a rigorous 4-stage QC system with 100% full inspection. Our track record shows 99.99% qualification rate.
What are your lead times and how do you handle urgent orders?
Standard lead times: 3-7 days for prototypes, 7-15 days for mass production. We offer VIP prioritization cutting lead times by up to 30%.
Will I get timely responses and professional support throughout the project?
Yes. You get a 1v1 exclusive consultant with 1-hour initial response commitment and 24-hour technical support.
Can you provide material certifications and environmental compliance reports?
Yes. We provide material certifications and environmental test reports (RoHS, REACH compliant) upon request.
How do you protect my designs and intellectual property?
We start with mutual NDA and implement strict mold ownership protection and confidential data security measures.
What are your payment terms and MOQ requirements?
We offer flexible payment terms (T/T, L/C at sight) and MOQ from 1 piece for prototyping.
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Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners

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Product Detail
Brand Name :
TF
Model Number :
TF-009
Certification :
ISO9001
Place of Origin :
Shenzhen, China
MOQ :
1
Price :
0.10-0.60USD
Contact Supplier
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Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners
Blind Threaded Brass Inserts Closed End Design Lead Free Custom Precision Fasteners

Shenzhen TingFeng Hardware Products Co.,Ltd

Verified Supplier
1 Years
guangdong, shenzhen
Business Type :
Manufacturer, Exporter, Seller
Main Products :
Precision Machined Parts, CNC Turned Parts, CNC Milling Parts
Total Annual :
20000000-30000000
Employee Number :
60~70
Certification Level :
Verified Supplier
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