Industrial-grade flame resistant hook fastener with 5,000 closure cycles, no adhesive backing, suitable for aerospace and rail applications requiring fire ratings and superior durability.
The 3M™ Flame Resistant Hook Fastener SJ3419FR is a premium industrial-grade reclosable fastening solution designed specifically for applications requiring flame resistance. This black hook fastener measures 1 inch in width and comes in 50-yard rolls, with 12 rolls per case, making it ideal for large-scale industrial operations. The fastener features a woven nylon backing with approximately 300 J-shaped hooks per square inch that provide exceptional durability through thousands of opening and closing cycles.
This flame-resistant fastener is engineered without adhesive or liner, offering maximum flexibility for customization and attachment. It can be sewn directly to substrates or applied using hot melt or liquid adhesives, making it suitable for diverse manufacturing and assembly applications. The fastener maintains excellent temperature resistance up to 200°F (93°C) and is preshrunk to ensure stability and flatness during use. It serves as an effective alternative to traditional closures such as zippers, screws, snaps, and hooks, providing superior design flexibility and fast product assembly.
Specifically designed for aerospace, rail, and industrial applications where fire ratings are critical, the 3M™ Flame Resistant Hook Fastener SJ3419FR delivers reliable performance in demanding environments. With a closure life of 5,000 cycles and washable, dry-cleanable properties, this fastener is perfect for securing fabric to furniture cushions, mounting airplane seat covers, and other industrial applications requiring both durability and flame resistance. The product is intended for industrial and occupational use only and must be paired with 3M™ Flame Resistant Loop Fastener SJ3418FR for complete fastening solutions.
Key Features
- Flame resistant design suitable for aerospace and rail industry applications
- Durable construction with 5,000 closure life cycles for extended product performance
- No adhesive or liner backing allows flexible attachment by sewing or hot melt adhesives
- Woven nylon backing with approximately 300 J-shaped hooks per square inch
- Temperature resistant up to 200°F (93°C) with preshrunk construction for stability
- Washable and dry-cleanable properties for easy maintenance
- Alternative to zippers, screws, snaps and traditional fastening methods
- Smooth and clean exterior surfaces with excellent product performance
Technical Specifications
| Specification |
Value |
| Product Number | SJ3419FR |
| Brand | 3M™ |
| Product Type | Hook Fastener |
| Product Color | Black |
| Overall Width (Imperial) | 1 inch |
| Overall Width (Metric) | 25 mm |
| Overall Length (Imperial) | 50 yards |
| Overall Length (Metric) | 45.7 meters |
| Product Form | Roll |
| Backing Material | Nylon |
| Total Tape Thickness without Liner (Imperial) | 78.74 mil |
| Total Tape Thickness without Liner (Metric) | 2 mm |
| Engaged Thickness (Imperial) | 0.15 inch |
| Engaged Thickness (Metric) | 3.8 mm |
| Maximum Operating Temperature (Fahrenheit) | 200°F |
| Maximum Operating Temperature (Celsius) | 93°C |
| Closure Life Cycles | 5,000 |
| Hook Density | Approximately 300 hooks per square inch (46 hooks per square cm) |
| Primary Liner Thickness (Imperial) | 3 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Units per Case | 12 rolls |
| Smallest Saleable Unit | Roll |
| Adhesive/Liner | No adhesive or liner |
| Attachment Methods | Sewing, hot melt adhesives, or liquid adhesives |
| Flame Resistant | Yes |
| Washable | Yes |
| Dry Cleanable | Yes |
| Paired Product | 3M™ Flame Resistant Loop Fastener SJ3418FR |
| UPC | 00021200629525 |
| 3M ID | 7000051782 |
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