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JACK 21317002 Overlock Lower Knife / E4S / C5 / C6 / C7
- Condition:
- New
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JACK 21317002 Overlock Lower Knife / E4S / C5 / C6 / C7 is backordered and will ship as soon as it is back in stock.
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Fast free shipping from our Miami warehouse. It's a portable unit — arrives boxed and ready, no table assembly involved.
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JACK 21317002 Overlock Lower Knife / E4S / C5 / C6 / C7
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Description
Description
Overlock knife/blade compatible across the modern overlock family (JACK E4S/E5/C-series, Speedway SW6/SW7, and equivalents). Knives cross thread counts within the family.
The Overlock Lower Knife (Part #21317002) is a genuine JACK original replacement part designed for JACK JK-E4S, C5, C6 and C7 series overlock machines. Manufactured to OEM specifications for precise fit and reliable performance.
Equivalent Part Numbers
- JACK: 21317002
Compatible Machines
This part fits the following industrial sewing machine models:
- JACK: JK-E4S series, C5, C6, C7, E4S-4, E4S-3-32R2, E4S-5-03, E4S-6-03, C7-4, C7-5, C7-3-02, E4S-3-02, C7-6-03/333 Urus, E5-3-32R2, E5-5-03
- SPEEDWAY: SW7-4D, SW7-5D, SW6-4D, SW6-3D, SW6-3D-32R, SW6-5D, SW6-6D
- JUKI: MO-6714, MO-6716, MO-6814, MO-6816
- SIRUBA: 747, 757
- PEGASUS: M700, EX5200
- BROTHER: 3034
Technical Specifications
| Brand | JACK |
| Part Number | 21317002 |
| Part Type | Knives |
| Condition | New – OEM Original |
Looking for a replacement overlock lower knife for your JACK JK-E4S or C5 overlock machine? This genuine OEM part ensures reliable performance and precise fit. Shop with confidence — all parts ship from Miami, FL.
⚠️ Compatibility Notice: Always verify your machine model and subclass number before ordering. Part numbers and compatibility are provided as a reference only. Supra Sewing is not responsible for purchases made without confirming compatibility with your specific machine. All sales on replacement parts are final.
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