KYA Fasteners' 21x25 Gauge 0.31x0.21 Galvanized Flat Box Stitching Wire is crafted for high-performance stitching in packaging applications. Made from low carbon steel with a galvanized zinc coating, this wire (0.80mm x 0.55mm) offers excellent corrosion resistance and a clean, flake-free finish. With a tensile strength of 650-950 N/mm², it ensures reliable stitches for corrugated cartons, booklets, and inline press applications. Ideal for side, saddle, and corner stitching, it supports high-speed operations and is recommended for packaging furniture, mattresses, and machine parts, delivering durability and precision.
Galvanized zinc coating for corrosion resistance
Tensile strength of 650-950 N/mm² for reliable stitching
Clean, flake-free finish for smooth operation
Supports high-speed side, saddle, and corner stitching
Low carbon steel for durability and precision
Ideal for 1/16" to 1/2" material thickness
| Wire Gauge | Size (in) | Size (mm) | Feet per Pound | Recommended Thickness |
|---|---|---|---|---|
| 18 x 20 | 0.047 x 0.035 | 1.20 x 0.90 | 221 | 5/8" - 2" |
| 19 x 21.5 | 0.041 x 0.030 | 1.05 x 0.75 | 283 | 1/2" - 1" |
| 19.5 x 21 | 0.037 x 0.031 | 0.95 x 0.80 | 283 | 1/2" - 1" |
| 20 x 24 | 0.035 x 0.023 | 0.90 x 0.60 | 408 | Up to 3/16" |
| 20 x 25 | 0.035 x 0.021 | 0.90 x 0.55 | 455 | 1/8" - 5/8" |
| 21 x 25 | 0.031 x 0.021 | 0.80 x 0.55 | 559 | 1/16" - 1/2" |
| Wire Gauge | German Wire Gauge (mm) | m/kg | ASWG (mm) | m/kg | ft/LBS | BWG (mm) | m/kg | ft/LBS |
|---|---|---|---|---|---|---|---|---|
| 21 | 0.80 | 253 | 0.81 | 247 | 368 | 0.81 | 247 | 368 |
| 22 | 0.75 | 288 | 0.73 | 304 | 452 | 0.71 | 322 | 479 |
| 23 | 0.65 | 331 | 0.65 | 384 | 571 | 0.63 | 409 | 609 |
| 24 | 0.60 | 451 | 0.58 | 482 | 717 | 0.56 | 517 | 769 |
| 25 | 0.55 | 536 | 0.52 | 600 | 893 | 0.51 | 624 | 929 |
| 26 | 0.50 | 649 | 0.46 | 767 | 1141 | 0.46 | 767 | 1141 |
| 27 | 0.45 | 801 | 0.44 | 838 | 1247 | 0.41 | 965 | 1436 |
| 28 | 0.40 | 1014 | 0.41 | 965 | 1436 | 0.36 | 1252 | 1863 |
| 29 | 0.37 | 1185 | 0.38 | 1123 | 1671 | 0.33 | 1489 | 2216 |
| 30 | 0.35 | 1324 | 0.36 | 1252 | 1863 | 0.30 | 1802 | 2682 |
The 21x25 Gauge Stitching Wire is optimized for high-speed stitching in packaging applications. Contact KYA Fasteners for bulk orders or custom specifications.
Request a Bulk QuoteHigh-quality low carbon steel for durability
Galvanized coating for corrosion resistance
Clean, flake-free finish for smooth operation
Optimized tensile strength (650-950 N/mm²)
Suitable for 1/16" to 1/2" material thickness
Supports high-speed stitching machines
Wire tensile strength, measured in PSI, determines the force required to break the wire. The 21x25 Gauge Stitching Wire has a tensile range of 135,000 to 165,000 PSI, balancing stiffness and formability for optimal stitching performance. Higher tensile strengths above 165,000 PSI may cause premature wear on stitching heads and trimmer knives, increasing maintenance costs. Lower tensile strengths below 135,000 PSI result in soft wire that may not form proper stitches.
The 21x25 Gauge Stitching Wire is designed for secure stitching in various packaging and printing applications.
Side stitching for corrugated cartons
Saddle stitching for booklets and magazines
Corner stitching for packaging boxes
Booklet making
Inline stitching in press applications
Packaging furniture, mattresses, and machine parts
It is used for side, saddle, and corner stitching in corrugated cartons, booklets, and inline press applications, ideal for packaging furniture, mattresses, and machine parts.
The wire has a tensile strength of 650-950 N/mm² (135,000-165,000 PSI), ensuring optimal stitching performance.
It is recommended for materials from 1/16" to 1/2" thick, providing secure stitches.
It features a galvanized zinc coating for corrosion resistance or a copper coating for a bright finish.
The 135,000-165,000 PSI range balances stiffness and formability, preventing equipment wear while ensuring strong stitches.
Yes, sample orders are available to test quality. Contact KYA Fasteners to arrange a sample.
Ask a QuestionWith over 20 years of expertise, KYA Fasteners is a trusted leader in industrial fasteners, delivering high-quality 21x25 Gauge Stitching Wire. Our SGS-certified production ensures precision and durability, serving clients in over 50 countries. We ship from Qingdao port within 20-30 days, offering customized solutions for packaging and printing needs.
Global Reach: Exporting to 50+ countries with reliable stitching wire
Premium Quality: Durable, corrosion-resistant wire for professional use
Fast Delivery: Ships worldwide in 20-30 days from Qingdao port
Custom Solutions: Tailored specifications for specific projects
Enhance your packaging projects with 21x25 Gauge Stitching Wire. Request a free quote today to experience KYA's quality and service.
Contact KYA Fasteners
KYA Fasteners' 21x25 Gauge 0.31x0.21 Galvanized Flat Box Stitching Wire is crafted for high-performance stitching in packaging applications. Made from low carbon steel with a galvanized zinc coating, this wire (0.80mm x 0.55mm) offers excellent corrosion resistance and a clean, flake-free finish. With a tensile strength of 650-950 N/mm², it ensures reliable stitches for corrugated cartons, booklets, and inline press applications. Ideal for side, saddle, and corner stitching, it supports high-speed operations and is recommended for packaging furniture, mattresses, and machine parts, delivering durability and precision.
Galvanized zinc coating for corrosion resistance
Tensile strength of 650-950 N/mm² for reliable stitching
Clean, flake-free finish for smooth operation
Supports high-speed side, saddle, and corner stitching
Low carbon steel for durability and precision
Ideal for 1/16" to 1/2" material thickness
| Wire Gauge | Size (in) | Size (mm) | Feet per Pound | Recommended Thickness |
|---|---|---|---|---|
| 18 x 20 | 0.047 x 0.035 | 1.20 x 0.90 | 221 | 5/8" - 2" |
| 19 x 21.5 | 0.041 x 0.030 | 1.05 x 0.75 | 283 | 1/2" - 1" |
| 19.5 x 21 | 0.037 x 0.031 | 0.95 x 0.80 | 283 | 1/2" - 1" |
| 20 x 24 | 0.035 x 0.023 | 0.90 x 0.60 | 408 | Up to 3/16" |
| 20 x 25 | 0.035 x 0.021 | 0.90 x 0.55 | 455 | 1/8" - 5/8" |
| 21 x 25 | 0.031 x 0.021 | 0.80 x 0.55 | 559 | 1/16" - 1/2" |
| Wire Gauge | German Wire Gauge (mm) | m/kg | ASWG (mm) | m/kg | ft/LBS | BWG (mm) | m/kg | ft/LBS |
|---|---|---|---|---|---|---|---|---|
| 21 | 0.80 | 253 | 0.81 | 247 | 368 | 0.81 | 247 | 368 |
| 22 | 0.75 | 288 | 0.73 | 304 | 452 | 0.71 | 322 | 479 |
| 23 | 0.65 | 331 | 0.65 | 384 | 571 | 0.63 | 409 | 609 |
| 24 | 0.60 | 451 | 0.58 | 482 | 717 | 0.56 | 517 | 769 |
| 25 | 0.55 | 536 | 0.52 | 600 | 893 | 0.51 | 624 | 929 |
| 26 | 0.50 | 649 | 0.46 | 767 | 1141 | 0.46 | 767 | 1141 |
| 27 | 0.45 | 801 | 0.44 | 838 | 1247 | 0.41 | 965 | 1436 |
| 28 | 0.40 | 1014 | 0.41 | 965 | 1436 | 0.36 | 1252 | 1863 |
| 29 | 0.37 | 1185 | 0.38 | 1123 | 1671 | 0.33 | 1489 | 2216 |
| 30 | 0.35 | 1324 | 0.36 | 1252 | 1863 | 0.30 | 1802 | 2682 |
The 21x25 Gauge Stitching Wire is optimized for high-speed stitching in packaging applications. Contact KYA Fasteners for bulk orders or custom specifications.
Request a Bulk QuoteHigh-quality low carbon steel for durability
Galvanized coating for corrosion resistance
Clean, flake-free finish for smooth operation
Optimized tensile strength (650-950 N/mm²)
Suitable for 1/16" to 1/2" material thickness
Supports high-speed stitching machines
Wire tensile strength, measured in PSI, determines the force required to break the wire. The 21x25 Gauge Stitching Wire has a tensile range of 135,000 to 165,000 PSI, balancing stiffness and formability for optimal stitching performance. Higher tensile strengths above 165,000 PSI may cause premature wear on stitching heads and trimmer knives, increasing maintenance costs. Lower tensile strengths below 135,000 PSI result in soft wire that may not form proper stitches.
The 21x25 Gauge Stitching Wire is designed for secure stitching in various packaging and printing applications.
Side stitching for corrugated cartons
Saddle stitching for booklets and magazines
Corner stitching for packaging boxes
Booklet making
Inline stitching in press applications
Packaging furniture, mattresses, and machine parts
It is used for side, saddle, and corner stitching in corrugated cartons, booklets, and inline press applications, ideal for packaging furniture, mattresses, and machine parts.
The wire has a tensile strength of 650-950 N/mm² (135,000-165,000 PSI), ensuring optimal stitching performance.
It is recommended for materials from 1/16" to 1/2" thick, providing secure stitches.
It features a galvanized zinc coating for corrosion resistance or a copper coating for a bright finish.
The 135,000-165,000 PSI range balances stiffness and formability, preventing equipment wear while ensuring strong stitches.
Yes, sample orders are available to test quality. Contact KYA Fasteners to arrange a sample.
Ask a QuestionWith over 20 years of expertise, KYA Fasteners is a trusted leader in industrial fasteners, delivering high-quality 21x25 Gauge Stitching Wire. Our SGS-certified production ensures precision and durability, serving clients in over 50 countries. We ship from Qingdao port within 20-30 days, offering customized solutions for packaging and printing needs.
Global Reach: Exporting to 50+ countries with reliable stitching wire
Premium Quality: Durable, corrosion-resistant wire for professional use
Fast Delivery: Ships worldwide in 20-30 days from Qingdao port
Custom Solutions: Tailored specifications for specific projects
Enhance your packaging projects with 21x25 Gauge Stitching Wire. Request a free quote today to experience KYA's quality and service.
Contact KYA Fasteners
