KYA 18×20 Gauge Copper Flat Stitching Wire is a heavy flat wire made from low-carbon steel with a copper-coated surface for carton stitching, industrial packaging, printing and binding applications.
The 047035C size measures 0.047 × 0.035 inch, approximately 1.20 × 0.90mm. Its rectangular profile provides a wider contact area than round stitching wire and is suitable for compatible stitching equipment used on thicker corrugated cartons and other heavy stitching work.
The listed tensile-strength range is 650–950 N/mm², with a dimensional tolerance of ±0.05mm. Available spool weights include 2kg, 3.5kg, 10kg, 15kg and 100kg.
| Specification | Details |
| Product | 18×20 Gauge 047035C Copper Flat Stitching Wire |
| Wire Gauge | 18 × 20 Gauge |
| Wire Profile | Flat / Rectangular |
| Wire Size – Inch | 0.047 × 0.035 inch |
| Wire Size – Metric | 1.20 × 0.90mm |
| Material | Low Carbon Steel |
| Surface Finish | Copper Coated |
| Tensile Strength | 650–950 N/mm² |
| Dimensional Tolerance | ±0.05mm |
| Wire Length | Approx. 221 ft/lb |
| Reference Work Thickness | 5/8"–2" |
| Spool Weights | 2kg, 3.5kg, 10kg, 15kg, 100kg |
The 5/8"–2" work-thickness figure is a wire-selection reference. Actual stitching capacity depends on the stitching machine, stitching head, cutter, former, clincher, material density and machine setup. Confirm machine compatibility before bulk ordering.
Flat stitching wire has a rectangular cross-section rather than the circular cross-section of round stitching wire. The wider profile provides a broader contact area across the stitched material and is commonly selected for compatible heavy stitching applications.
Heavy flat wire size: 0.047 × 0.035 inch / 1.20 × 0.90mm.
Copper-coated surface: Provides a bright finish and corrosion protection for the underlying steel wire.
Flat profile: Provides a wider stitch contact area than comparable round wire.
Controlled dimensions: Listed tolerance of ±0.05mm supports consistent forming and feeding.
221 ft/lb reference: Helps production users estimate wire consumption.
Multiple spool sizes: 2kg to 100kg options for different production requirements.
The 047035C version uses low-carbon steel with a copper-coated surface. A clean and consistent coating supports smooth wire movement through correctly maintained stitching equipment while providing corrosion protection and a bright surface appearance.
The wire should remain clean and free from dirt, loose coating, excessive kinks and bends. Consistent surface condition is important for reliable de-spooling, wire feeding, cutting and stitch formation.
The specified tensile-strength range is 650–950 N/mm². Tensile strength affects the stiffness of the wire and how it feeds, cuts, bends and forms inside the stitching head.
For applications with a specified machine or stitching-head tensile requirement, confirm the required tensile grade before ordering.
| Wire Size | Size (Inches) | Size (mm) | Feet per Pound | Reference Work Thickness |
|---|---|---|---|---|
| 18 × 20 | 0.047 × 0.035 | 1.20 × 0.90 | 221 | 5/8"–2" |
| 19 × 21.5 | 0.041 × 0.030 | 1.05 × 0.75 | 283 | 1/2"–1" |
| 19.5 × 21 | 0.037 × 0.031 | 0.95 × 0.80 | 283 | 1/2"–1" |
| 20 × 24 | 0.035 × 0.023 | 0.90 × 0.60 | 408 | Up to 3/16" |
| 20 × 25 | 0.035 × 0.021 | 0.90 × 0.55 | 455 | 1/8"–5/8" |
| 21 × 25 | 0.031 × 0.021 | 0.80 × 0.55 | 559 | 1/16"–1/2" |
18×20 Copper Flat Stitching Wire is intended for high-strength stitching in packaging, printing and binding applications where the stitching equipment is configured for this flat wire size.
Corrugated cardboard boxes and cartons
Heavy-duty carton stitching
Furniture packaging
Mattress packaging
Machine parts packaging
Side stitching
Corner stitching
Book and booklet binding with compatible equipment
Not every stitching head is designed to accept 18×20 flat wire. Before replacing an existing wire or changing to this size, confirm that the stitching machine, stitching head, cutter, former, clincher and wire guides are suitable for 0.047 × 0.035-inch flat wire.
If you are replacing another stitching wire, provide the machine model, stitching-head model, current wire label or wire sample when requesting a quotation.
Available spool weights include 2kg, 3.5kg, 10kg, 15kg and 100kg. The correct spool format should be selected according to the stitching machine, de-spooling equipment and production volume.
| Spool Weight | Ordering Note |
|---|---|
| 2kg | Confirm spool and machine compatibility. |
| 3.5kg | Confirm spool and machine compatibility. |
| 10kg | Suitable for compatible production stitching setups. |
| 15kg | Suitable for compatible production stitching setups. |
| 100kg | Confirm reel holder and de-spooling requirements before ordering. |
A clean wire path from the spool to the stitching head supports consistent production. Wire guides, spring tubes, felt pads and other wire-contact components should be checked regularly for dirt, wear and coating buildup.
The wire should de-spool smoothly without excessive crossing, kinks or bends. Maintaining the correct feed path helps reduce coating damage, flaking and wire-feed interruptions.
KYA also supplies round stitching wire. The table below is provided as a reference for related round wire products and should not be used as the dimensional specification for the 18×20 flat wire on this page.
| Wire Gauge | German Wire Gauge (mm) | m/kg | ASWG (mm) | m/kg | ft/lb | BWG (mm) | m/kg | ft/lb |
|---|---|---|---|---|---|---|---|---|
| 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 |
Samples can be arranged for product evaluation. For an accurate sample or quotation, provide the required wire size, surface finish, tensile requirement, spool weight and stitching-machine information where available.
Bulk orders and customized solutions are available. Tailored wire dimensions and spool sizes can be discussed for packaging, printing and binding applications.
KYA Fasteners has more than 20 years of experience in industrial fasteners and states that its production is SGS certified.
KYA supplies customers in more than 50 countries and states that worldwide shipments leave from Qingdao port within 20–30 days.
SGS-certified production
Supply to 50+ countries
Worldwide shipping from Qingdao port
Stated shipping time: 20–30 days
Custom wire dimensions and spool sizes available
18×20 flat stitching wire measures 0.047 × 0.035 inch, approximately 1.20 × 0.90mm.
The 047035C specification is 0.047 × 0.035 inch, corresponding to approximately 1.20 × 0.90mm.
047035 identifies the approximately 0.047 × 0.035-inch flat wire dimensions. The 047035C product is the copper-coated 18×20 version.
It is used for compatible heavy-duty carton stitching, corrugated packaging, side stitching, corner stitching, furniture and mattress packaging, machine-parts packaging and selected heavy binding applications.
The base material is low-carbon steel with a copper-coated surface.
The listed tensile-strength range is 650–950 N/mm². Buyers with a machine-specific tensile requirement should confirm the required grade before ordering.
The listed dimensional tolerance is ±0.05mm.
The reference value is approximately 221 feet per pound.
The size table lists a reference work thickness of 5/8" to 2". Actual machine capacity depends on the stitching head, equipment configuration and material being stitched.
No. The stitching head and related components must be suitable for 0.047 × 0.035-inch flat wire. Confirm machine compatibility before ordering.
Available spool weights are 2kg, 3.5kg, 10kg, 15kg and 100kg.
Yes. Contact KYA Fasteners with the required wire specification and machine information to arrange a sample for evaluation.
Yes. Customized wire dimensions and spool sizes can be discussed for specific production requirements.
KYA states that it supplies customers in more than 50 countries.
KYA states that worldwide shipments leave from Qingdao port within 20–30 days.
