Black Oxide Carbon Steel Key Locking Thread Insert for Thread Repair
Key-Locking Inserts (Keenserts) are high-strength threaded fasteners featuring both internal and external threads. Distinguished by two or four integral locking pins (keys), these inserts provide a mechanical lock against rotation once installed.
Operating Principle: After being threaded into a pre-tapped hole, the locking pins are driven down into the base material. This creates a robust, elastic interface between the bolt and the internal threads of the housing. By compensating for thread manufacturing tolerances, the Keensert significantly enhances connection strength and ensures superior vibration resistance.
Specification
|
Item |
Carbon Steel Key-Locking Thread Insert |
|
Material |
Carbon Steel (C1215 / 12L14 or equivalent, available upon request) |
|
Measurement System |
Metric (ISO) / Inch (UNC / UNF) available |
|
Place of Origin |
Shenzhen, China |
|
Brand Name |
Locking Inserts Tech |
|
Standard |
ISO / DIN / ANSI / NAS (Custom standards supported) |
|
Product Name |
Carbon Steel Keensert / Keysert |
|
Surface Treatment |
Black Oxide / Zinc Plated / Phosphate Coated / Custom Finish Available |
|
Heat Treatment |
Through Hardened or Case Hardened |
|
Application |
Aluminum alloys/Magnesium/Cast iron/Soft steels |
|
Feature |
Positive mechanical locking via solid keys |
|
Sample |
Samples available for quality evaluation and testing |
|
Packing |
Individual poly bag and Carton packaging |
|
Payment |
T/T, L/C, PayPal, Western Union |
|
Supply Ability |
1000000 Piece/Pieces per Month |
Why Choose Us
Our Advantages
1.In-house factory manufacturing ensures stable quality and competitive pricing.
2.Over 21 years of professional experience in fastener manufacturing.
3.OEM and ODM services available for panel and sheet metal fasteners.
4.Products are exported and supplied to customers worldwide.
5.One-stop thread fastener solutions tailored to customer requirements.
6.All products are manufactured in compliance with ISO, and DIN standards.
Product Parameter Sheet
Lightweight - Inch
|
Insert |
Installation |
Removal |
||||||||
|
Internal Thread Class 3B |
External Thread Class 2A |
H Length |
J ±.030 |
K C'Bore Depth |
Tap Drill Size |
C'Sink Dia. +0.10 -0.000 |
Thread Tap |
Drill |
||
|
Size Class 2B |
Min. Depth |
Size |
Depth |
|||||||
|
10-24 |
5/16-18 |
.312 |
.22 |
.07 |
.272 |
.323 |
5/16-18 |
.37 |
7/32 |
5/32 |
|
10-32 |
||||||||||
|
1/4-20 |
3/8-16 |
.375 |
.22 |
.07 |
.332 |
.385 |
3/8-16 |
.43 |
9/32 |
3/16 |
|
1/4-28 |
||||||||||
|
5/16-18 |
7/16-14 |
.437 |
.22 |
.07 |
.397 |
.447 |
7/16-14 |
.50 |
11/32 |
3/16 |
|
5/16-24 |
||||||||||
|
3/8-16 |
1/2-13 |
.500 |
.24 |
.07 |
.453 |
.510 |
1/2-13 |
.56 |
13/32 |
3/16 |
|
3/8-24 |
||||||||||
|
7/16-14 |
9/16-12 |
.562 |
.27 |
.07 |
.516 |
.572 |
9/16-12 |
.62 |
15/32 |
3/16 |
|
7/16-20 |
||||||||||
|
1/2-13 |
5/8-11 |
.625 |
.28 |
.07 |
.578 |
.635 |
5/8-11 |
.68 |
17/32 |
3/16 |
|
1/2-20 |
||||||||||
Other sizes, special designs and materials on request.
Tap drill hole tolerance: .234to.500=+.004/-.001 over.500=+.005/-.001
Lightweight - Metric
|
Insert |
Installation |
Removal |
||||||||
|
Internal Thread Class 4H5H |
External Thread Class 4H |
H Length |
J ±.76 |
K C'Bore Depth |
Tap Drill Size |
C'Sink Dia. +.25 -0.00 |
Thread Tap |
Drill |
||
|
Size Class 6H |
Min. Depth |
Size |
Depth |
|||||||
|
M5*0.8 |
M8*1.25 |
8.0 |
3.73 |
1.27 |
6.90 |
8.25 |
M8*1.25 |
9.5 |
5.50 |
4.00 |
|
M5*0.5 |
||||||||||
|
M6*1.0 |
M10*1.25 |
10.0 |
6.02 |
1.78 |
8.80 |
10.25 |
M10*1.25 |
11.5 |
7.50 |
4.75 |
|
M6*0.75 |
||||||||||
|
M8*1.25 |
M12*1.25 |
12.0 |
6.28 |
1.78 |
10.80 |
12.25 |
M12*1.25 |
13.5 |
9.50 |
4.75 |
|
M8*1.0 |
||||||||||
|
M10*1.5 |
M14*1.5 |
14.0 |
6.46 |
2.29 |
12.80 |
14.25 |
M14*1.5 |
15.5 |
11.50 |
4.75 |
|
M10*1.25 |
||||||||||
|
M12*1.75 |
M16*1.5 |
16.0 |
6.46 |
2.29 |
14.75 |
16.25 |
M16*1.5 |
17.5 |
13.50 |
4.75 |
|
M12*1.25 |
||||||||||
Other sizes, special designs and materials on request.
Thread class on internal thread is 4H/6H.
Tap drill hole tolerance: 6.90 to 10.80 = +0.100/-0.025 over 12.80 = +0.130/-0.025
Production Process
Carbon Steel Raw Material
1
>>
CAD Mold Design
2
>>
Cold Heading
Process
3
>>
Surface Treatment
4
>>
Heat Treatment
5
>>
Thread Rolling Process
6
>>
CCD
Checking
7
>>
Packing
in PE bag
8
>>
Package for Shippment
9
FAQ
Q: Who are we?
A: We are based in Shenzhen, China, start from xxxx, There are total about 20-51 people in our office.
Q: How can we guarantee quality?
A: Always a pre-production sample before mass production;
Always finalInspection before shipment
Q: What can you buy from us?
A: Key locking thread inserts, wire thread inserts, self tapping thread inserts and tangless inserts; In addition, we also supply dedicated tools for all series of thread insert products, including taps, installation wrenches, removal tools, and both electric and manual installation tools.
Q: Why should you buy from us not from other suppliers?
A: 1. We provide a wide yariety of Standard and non standard custom products
2. Products are widely used in electroniccommunications, sheet metal, aerospace, automobile manufacturing machiney equipment and precisioninstruments
3. xx years manufacturing experience history.
Q: How to Confirm Orders with Overseas Customers?
A: Order Confirmation Process (Primarily for Standard Stock Products)
Our products are mainly standard stock items that comply with international specifications, the order confirmation process is efficient and straightforward:
Customer Submits a Purchase Order (PO)
The PO should include product model, thread specifications (metric/imperial), material, quantity, and delivery terms.
We Verify Stock and Technical Parameters
We check thread standards, dimensions, and inventory status.
Issue Proforma Invoice (PI)
The PI clearly outlines product specifications, quantity, unit price, trade terms, and delivery schedule for the customer's final confirmation.
Customer Confirms PI and Arranges Payment
Once payment is received, we immediately proceed with picking, quality inspection, and shipment-no production lead time is required for standard stock items.
For standard stock keylocking thread repair inserts, pre-production samples are usually not required. However, if the customer requests, samples can be provided for confirmation.
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