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KYA 21 Gauge Automatic Rebar Tie Wire is a 0.8mm galvanized low-carbon steel wire supplied on an approximately 100m reel for compatible automatic rebar tying machines. Each reel has an approximate net wire weight of 0.4kg and is intended for repetitive reinforcement tying in precast concrete, foundations, rebar cages, bridges, retaining walls and other reinforced-concrete construction.
The product is listed with Q195 steel, galvanized surface treatment, nominal 420MPa tensile strength and 21% elongation. KYA lists approximately 120–190 ties per reel, depending on the tying machine, rebar combination, number of wraps and wire consumption per tying cycle.
KYA references legacy MAX RB392, RB395, RB397 and RB213-type 21 gauge applications for this reel format. Because automatic rebar tiers use model-specific reel bodies and feeding systems, buyers should confirm reel diameter, spool width, hub geometry, winding direction and feed compatibility before using an aftermarket replacement reel.
| Specification | Details |
| Product | Automatic Rebar Tie Wire |
| Gauge | 21 Gauge |
| Wire Diameter | 0.8mm / Approx. 0.0315" |
| Wire Length | Approx. 100m per reel |
| Net Weight | Approx. 0.4kg per reel |
| Material | Q195 Low-Carbon Steel |
| Surface | Galvanized |
| Section | Round Wire |
| Page-Listed Tensile Strength | 420MPa nominal |
| Page-Listed Elongation | 21% nominal |
| Estimated Reel Yield | Approx. 120–190 ties depending on tool and rebar combination |
| Listed Packing | 20 reels per box |
| Legacy Tool References | RB392, RB395, RB397 and RB213-type 21GA systems, subject to reel compatibility verification |
| Applications | Precast Concrete, Foundations, Rebar Cages, Bridges, Retaining Walls, Floors and Reinforcement Mesh |
Where a project specifies controlled tensile strength, elongation, zinc coating or material traceability, request current batch documentation before purchasing. Mechanical-property values should be confirmed against the supplied production lot.
The nominal 0.8mm diameter corresponds to the common 21 gauge wire class used by many conventional automatic rebar tying systems.
Wire diameter is only one compatibility parameter. Two tie-wire reels can both contain 0.8mm wire while using different spool widths, hubs, reel locking interfaces or feed geometry.
This KYA product page specifies approximately 100m of 0.8mm wire per reel and approximately 0.4kg net wire weight.
A 100m aftermarket reel should not automatically be treated as dimensionally identical to an original 95m or 312ft consumable. Confirm both the wire specification and physical reel body before replacement.
KYA specifies Q195 low-carbon steel for this automatic tying wire. Low-carbon steel provides the ductility needed for feeding, bending, twisting and cutting during an automatic tying cycle.
The galvanized surface provides additional corrosion protection compared with untreated carbon steel and is commonly selected where a protected steel wire surface is required.
Galvanized tie wire should not be described as permanently rust-proof. Corrosion performance depends on zinc coating thickness, storage conditions, moisture, chlorides and the final service environment.
This product page lists a nominal tensile strength of 420MPa and elongation of 21%. These values describe the listed SKU specification rather than guaranteeing the result of every finished tie.
Wire feeding and tying performance also depend on diameter tolerance, straightness, surface condition, spool winding, feed components, cutter condition and machine setup.
| Property | Page-Listed Value | Purchasing Consideration |
|---|---|---|
| Diameter | 0.8mm | Confirm tool feed specification and diameter tolerance. |
| Tensile Strength | 420MPa nominal | Request batch documentation where a specified tensile range is required. |
| Elongation | 21% nominal | Ductility influences twisting and bending during the tying cycle. |
| Surface | Galvanized | Confirm required coating specification for controlled projects. |
KYA lists approximately 120–190 ties per reel. Actual reel yield varies because different rebar tiers use different wire lengths, wrap counts and tie geometry.
| Factor | Effect on Ties per Reel |
|---|---|
| Tool Model | Different machines consume different wire lengths per tie. |
| Rebar Combination | Larger intersections require a longer wire path. |
| Number of Wraps | Additional wraps increase wire consumption. |
| Tool Setup | Feed and tension settings can affect finished tie geometry. |
KYA references RB392, RB395, RB397 and RB213-type legacy 21 gauge tying applications for this product. These tool generations use the same general 0.8mm wire class, but original reel specifications can differ from the KYA 100m format.
For example, the original MAX RB397 TW897A specification is 21 gauge / 0.8mm with approximately 95m / 312ft of wire and approximately 120 ties per coil under the MAX reference conditions.
| Tool Reference | Compatibility Guidance |
|---|---|
| MAX RB397 | Original TW897A uses 21GA / 0.8mm / approx. 95m. Confirm reel body and feed compatibility before using a 100m aftermarket reel. |
| MAX RB395 | Legacy 21GA platform. Compare the original consumable and reel dimensions before substitution. |
| MAX RB392 | Legacy 21GA tool referenced by KYA. Verify actual consumable specification and reel geometry. |
| MAX RB213 | Legacy 21GA application reference. Confirm model-specific reel requirements before ordering. |
| Other 0.8mm Rebar Tiers | Do not determine compatibility from wire diameter alone. |
| Specification | KYA Product | MAX TW897A RB397 Reference |
|---|---|---|
| Gauge | 21GA | 21GA |
| Diameter | 0.8mm | 0.8mm |
| Wire Length | Approx. 100m | Approx. 95m / 312ft |
| Ties per Reel | KYA listed 120–190 | Approx. 120 on RB397 |
| Interchangeability | Do not assume from wire diameter and length alone; physical reel compatibility must also be confirmed. | |
Automatic rebar tying machines are widely used in precast concrete plants where reinforcement intersections must be secured repeatedly before concrete placement.
Consistent wire diameter, reel winding and feed geometry are important in high-volume production because irregular feeding can interrupt the tying cycle.
Compatible automatic rebar tiers can use 21 gauge wire during foundation, footing, column and rebar-cage assembly.
Tie wire holds reinforcing bars in position during fabrication and concrete placement. The structural capacity of the finished reinforced-concrete element is determined by the designed reinforcement system rather than the tie wire itself.
Automatic tying wire can be used in bridge decks, pile caps, road structures and other reinforced-concrete work where the selected tying machine and consumable are suitable.
Infrastructure projects can specify particular coating thickness, material traceability or corrosion requirements. Confirm those requirements before ordering wire for controlled construction projects.
0.8mm automatic tie wire can be used with compatible tying machines for reinforcement grids in retaining walls, concrete floors, walls and swimming-pool structures.
Galvanized wire provides corrosion protection compared with untreated steel, but project specifications should determine whether galvanized, coated, stainless or another wire material is required.
Precast concrete beams and panels
Building foundations and footings
Rebar cages
Columns and pile caps
Bridge reinforcement
Road construction
Retaining walls
Concrete floors and walls
Reinforcement mesh
Swimming-pool reinforcement
| Buyer Check | KYA Product Reference |
|---|---|
| Gauge | 21 Gauge |
| Wire Diameter | 0.8mm |
| Wire Length | Approx. 100m |
| Reel Weight | Approx. 0.4kg |
| Material | Q195 low-carbon steel |
| Surface | Galvanized |
| Reel Outside Diameter | Compare with the original consumable. |
| Reel Width | Must fit the machine reel holder and feed path. |
| Hub Geometry | Confirm hub and locking interface before substitution. |
| Winding Direction | Confirm with the tying machine. |
| Original Wire Model | Provide the original consumable part number when requesting replacement reels. |
This product page lists approximately 100m of wire and 0.4kg net weight per reel, with 20 reels per box.
Confirm carton dimensions, gross weight and current packing configuration for the exact SKU before shipment, particularly for distributor and project orders.
KYA supplies automatic rebar tie wire for concrete contractors, precast plants, reinforcement fabricators, construction distributors and automatic rebar-tier users.
For bulk purchasing, provide the tying-machine manufacturer and exact model, original consumable part number, wire diameter, reel dimensions, required surface treatment, project application and purchasing quantity.
KYA supplies automatic rebar tie wire in black annealed, galvanized, plastic-coated and stainless-steel configurations for different tying-machine systems and reinforced-concrete applications.
A nominal 0.8mm wire corresponds to the common 21 gauge automatic rebar tie-wire class.
This KYA SKU is listed at approximately 100m per reel with approximately 0.4kg net wire weight.
KYA lists approximately 120–190 ties per reel. Actual output depends on tool model, rebar size, wrap count and wire consumption for each tie.
The product page specifies Q195 galvanized low-carbon steel.
No. Galvanizing improves corrosion resistance compared with untreated steel, but corrosion performance still depends on zinc coating thickness and the service environment.
This SKU page lists a nominal tensile strength of 420MPa and 21% elongation. Where mechanical properties are contractual, request current production documentation for the supplied batch.
No absolute guarantee should be assumed. Feeding and breakage depend on wire quality, spool winding, reel geometry, tool condition, cutter condition and machine setup.
KYA references RB397 for this 21 gauge wire class. The original MAX RB397 TW897A specification is 0.8mm and approximately 95m / 312ft, so buyers should confirm the physical reel dimensions and feed compatibility before substituting a 100m aftermarket reel.
RB395 is a legacy 21 gauge MAX platform referenced by KYA. Confirm the original consumable model and complete reel geometry before substitution.
KYA references RB392 and RB213 as legacy 21 gauge application platforms. Verify the original spool dimensions and wire specification for the exact tool before ordering.
No. Different generations of MAX rebar tying tools use different wire gauges and proprietary reel formats. Conventional 21 gauge systems and newer 19 gauge TwinTier systems are not interchangeable.
No. 0.8mm is a dimensional specification rather than a brand-exclusive wire size. Compatibility depends on the complete wire and reel system.
Do not assume compatibility. TW1525 belongs to a different tying-wire system with different wire and reel requirements.
Yes. Precast reinforcement is a common automatic rebar tying application when the reel and tool are compatible.
Yes. Foundations, footings and reinforcement cages are typical applications for automatic rebar tying equipment.
Yes, subject to the project's tie-wire material, coating, traceability and construction requirements.
This product page lists 20 reels per box. Confirm the current packing configuration for the exact order before shipment.
Provide the tying-machine manufacturer and exact model, original consumable part number, wire diameter, reel dimensions, required surface treatment, project application and purchasing quantity.
