JRready
JRready ST6517 Mini-Fit Jr 2 4 Pin Molex Connector Kit 4.2mm Pitch 5557 Series Molex ConnectorsPower Plug Receptacle Housing 18-24AWG Crimp Terminals Pin Sockets Natural 124Pcs
Bottom line: The JRready ST6517 Mini-Fit Jr 2 4 Pin Molex Connector Kit 4.2mm Pitch is a specs-and-price decision rather than a crowd-consensus one in the power supplies & cables category. Check the specification table below against one or two close alternatives — on price and spec fit, not on star ratings.
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Pros & Cons
Pros
- ✓ Backed by JRready's warranty and support channels
Cons
- ✗ Confirm socket / form-factor / power-rating compatibility against your build before ordering
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
SpecPicks Verdict
SpecPicks scored JRready ST6517 Mini-Fit Jr 2 4 Pin Molex Connector Kit 4.2mm Pitch… using a rating × review-volume × price-fit model applied to published specs and reviews across the power supplies & cables category. JRready's power supplies & cables lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for power supplies & cables of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Key Features
- JRN011 SERIES CONNECTOR: 4.2mm pitch connector is made of PA66, Flame retardant grade is UL94-V0. The operating temperature range is from -40℃ to +105℃. Under environmental conditions of 23℃ ± 5℃, the temperature rise at 9A current is no more than 30℃. The connector can be mated and unmated over 50 times. Exposure to air may result in slight color differences, but it doesn't affect the performance of the product. If you have any questions about this, please contact us anytime.
- CONNECTOR DESIGN: Connectors are ideal for power applications up to 9 amps per circuit, and feature fully isolated terminals, positive housing locks, low engagement forces, and polarized housings. The receptacle housing can be connected with a variety of plug options, including panel mount and free hanging plugs, or vertical and right angle headers.
- CONTACTS DESIGN: The 18-24AWG contact is made of tin-plated brass. Locking tangs on the crimp contacts secure them firmly in the connector housing.The kit includes a large quantity of terminals for crimping practice or as spares, providing a great user experience, especially for beginners.
- JRREADY TOOL for JRN011 SERIES CONNECTOR: The crimper: ACT-SY-JRN011S-H. Pin removal tool：JRconDRK-D173P: enhanced for a superior grip with an enlarged size and protective cover; JRDDS-D173: high strength and hardness, magnetic deburring and polishing ,upgrades metal handle; DAP-D173: Hardened alloy steel and innovative push rod design. You can buy these tools at JRready Store.
- COMPATIBLE with MOLEX MODELS: 2 pin connector-39-01-3029/39-01-2025; 4pin connector- 39-01-3049/39-01-2045; Contacts pin: 39-00-0040/39-00-0041，socket: 39-00-0038/39-00-0039.
Full Specifications
| Brand | JRready |
|---|---|
| Color | White |
| Model | ST6517 |
| Terminal | Pin Terminal |
| Unit Count | 124 Count |
| Part Number | ST6517 |
| Material Type | Plastic |
| Connector Type | Crimp |
| Number of Items | 124 |
| Connector Gender | Female |
| Contact Material | Brass |
| Specification Met | UL |
| Insulation Material | Nylon |
| Warranty Description | Please contact us |
| Insulation Material Type | Nylon |
| COMPATIBLE with MOLEX MODELS | 2 pin connector-39-01-3029/39-01-2025; 4pin connector- 39-01-3049/39-01-2045; Contacts pin: 39-00-0040/39-00-0041，socket: 39-00-0038/39-00-0039. |
Ready to buy?
JRready ST6517 Mini-Fit Jr 2 4 Pin Molex Connector Kit 4.2mm Pitch 5557 Series Molex ConnectorsPower Plug Receptacle Housing 18-24AWG Crimp Terminals Pin Sockets Natural 124Pcs is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
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