Industrial-grade flame resistant hook fastener with 330 hooks per square inch, featuring durable nylon backing and no adhesive for maximum customization. Ideal for aerospace, rail, and applications requiring fire ratings. Provides thousands of reliable open/close cycles with excellent temperature resistance up to 200°F.
The 3M™ Flame Resistant Hook Fastener SJ3419FR is a premium reclosable fastening solution engineered for industrial applications requiring flame resistance and durability. This non-adhesive hook fastener features approximately 330 hooks per square inch (46 hooks per square centimeter) that engage with corresponding loop fasteners to create secure, repeated closures. The fastener is constructed with a flexible J-shaped hook design on a woven nylon backing, providing exceptional durability for thousands of opening and closing cycles. Ideal for aerospace, rail, and general industrial applications where fire ratings are critical, this fastener offers an excellent alternative to traditional closure methods such as zippers, screws, and snaps.
With no adhesive or liner, the 3M Flame Resistant Hook Fastener SJ3419FR provides maximum customization flexibility and can be attached by sewing or with hot melt or liquid adhesives. The product is preshrunk to ensure stability and flatness, maintaining consistent performance throughout its operational life. The fastener is washable and dry cleanable, making it suitable for upholstery, furniture cushions, and apparel applications. Operating at temperatures up to 200°F (93°C), this flame-resistant fastener meets stringent requirements for aerospace and rail industries where safety and reliability are paramount.
Each case contains 18 rolls of 50-yard length, with a width of 5/8 inch (15.87 mm), providing ample material for large-scale industrial projects. The black color offers versatility for various applications, and the product's inherent flame resistance ensures compliance with industry safety standards. When paired with 3M™ Flame Resistant Loop Fastener SJ3418FR, this hook fastener creates a complete two-part fastening system that delivers superior performance, design flexibility, and fast product assembly for demanding industrial environments.
Key Features
- Flame resistant design meeting aerospace and rail industry safety standards
- Approximately 330 J-shaped hooks per square inch for secure engagement
- Durable woven nylon backing preshrunk for stability and flatness
- Non-adhesive construction allows sewing or application with hot melt/liquid adhesives
- Withstands up to 5000 opening and closing cycles for long-lasting performance
- Temperature resistance up to 200°F (93°C) for demanding industrial applications
- Washable and dry cleanable for versatile fabric and garment applications
- Available in convenient 50-yard rolls with 5/8 inch width
- 18 rolls per case for bulk industrial projects
- Compatible with 3M Flame Resistant Loop Fastener SJ3418FR for complete fastening system
Technical Specifications
| Specification |
Value |
| Product Number | SJ3419FR |
| UPC | 00021200629495 |
| 3M ID | 7000051781 |
| Product Type | Hook Fastener |
| Hook Density | 330 hooks per square inch (46 hooks per square centimeter) |
| Backing Material | Woven Nylon |
| Product Color | Black |
| Product Form | Roll |
| Overall Width (Imperial) | 0.62 in (5/8 in) |
| Overall Width (Metric) | 15.87 mm |
| Overall Length (Imperial) | 50 yd |
| Overall Length (Metric) | 45.72 m |
| Total Tape Thickness without Liner (Imperial) | 78.74 mil |
| Total Tape Thickness without Liner (Metric) | 2 mm |
| Engaged Thickness (Imperial) | 0.15 in |
| Engaged Thickness (Metric) | 3.8 mm |
| Primary Liner Thickness (Imperial) | 3 mil |
| Primary Liner Thickness (Metric) | 0.08 mm |
| Maximum Operating Temperature (Fahrenheit) | 200°F |
| Maximum Operating Temperature (Celsius) | 93°C |
| Closure Life Cycles | 5000 |
| Units per Case | 18 Rolls |
| Smallest Saleable Unit | Roll |
| Adhesive | None - Non-adhesive backing |
| Attachment Methods | Sewing, Hot Melt Adhesive, Liquid Adhesive |
| Flame Resistance | Yes - Flame Resistant |
| Washability | Washable and Dry Cleanable |
| Preshrunk | Yes |
| Compatible Loop Fastener | 3M Flame Resistant Loop Fastener SJ3418FR |
| Industries | Aerospace, Rail, Construction, Electronics, Furniture, Medical, Military & Government, Transportation |
| Applications | Apparel Closure, Floor Mat Attachment, Graphic Attachment, Gym Mat Attachment, Interior Mirror & Fixture Attachment, Light Panel Attachment, Mounting & Trim Attachment, Mounting Airplane Seat Covers, Temporary Fastening, Upholstery & Seating Attachment |
| Brand | 3M |
| Use Type | Industrial/Occupational Use Only |
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