Premium flame resistant hook fastener with 5000 closure cycles, sewable design, and woven nylon backing for aerospace, rail, and industrial applications.
The 3M™ Flame Resistant Hook Fastener SJ3419FR is a premium two-part reclosable fastening solution engineered for applications requiring flame resistance and durability. This non-adhesive fastener features a woven nylon backing covered with approximately 300 flexible J-shaped hooks per square inch, designed to engage seamlessly with the corresponding 3M™ Flame Resistant Loop Fastener SJ3418FR. The fastener provides exceptional durability for thousands of opening and closure cycles, making it an ideal alternative to traditional closures such as zippers, screws, snaps, and hooks.
This flame resistant hook fastener is most commonly attached by sewing but can also be applied using hot melt or liquid adhesives for maximum design flexibility. The absence of adhesive or liner on the backing allows for easy customization and tailored appearance for fabrics and garments. Both the hook and loop components are preshrunk to ensure stability and flatness during extended use. With a maximum operating temperature of 200°F (93°C), this fastener is specifically designed for critical aerospace and rail applications where fire ratings are required.
The SJ3419FR fastener is washable and dry cleanable, offering excellent performance in demanding industrial environments. It comes in a convenient 50-yard roll format, with 12 rolls per case, providing ample material for large-scale manufacturing and assembly operations. This product is engineered for industrial and occupational use only, meeting stringent safety and performance standards for aerospace, rail, furniture, medical device, and general industrial applications.
Key Features
- Flame resistant design suitable for aerospace and rail industries
- Durable for 5000+ opening and closure cycles
- No adhesive or liner allows attachment by sewing or hot melt adhesives
- Woven nylon backing with approximately 300 hooks per square inch
- Maximum operating temperature of 200°F (93°C)
- Preshrunk hook and loop for stability and flatness
- Washable and dry cleanable for easy maintenance
- Alternative to zippers, screws, snaps and traditional fasteners
- Available in convenient 50-yard rolls with 12 rolls per case
- Pairs with 3M Flame Resistant Loop Fastener SJ3418FR
Technical Specifications
| Specification |
Value |
| Product Number | SJ3419FR |
| UPC Code | 00021200629518 |
| 3M ID | 7000144900 |
| Product Type | Hook Fastener |
| Product Form | Roll |
| Color | Beige |
| Overall Width (Imperial) | 1 inch |
| Overall Width (Metric) | 25.4 mm |
| Overall Length (Imperial) | 50 yards |
| Overall Length (Metric) | 45.72 meters |
| Backing Material | Woven Nylon |
| Hook Density | Approximately 300 hooks per square inch (46 hooks per square cm) |
| 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 | 5000 |
| Primary Liner Thickness (Imperial) | 3 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Units per Case | 12 rolls |
| Smallest Saleable Unit | Roll |
| Adhesive | None - Non-adhesive fastener |
| Attachment Method | Sewing, hot melt adhesive, or liquid adhesive |
| Flame Resistance | Yes - Flame resistant design |
| Washability | Washable and dry cleanable |
| Preshrunk | Yes |
| Complementary Product | 3M Flame Resistant Loop Fastener SJ3418FR |
| Industries | Aerospace, Rail, Construction, Electronics, Furniture, Medical, Military & Government, Transportation |
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