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KYA 84 Series fine wire staples are 21 gauge staples with a nominal 12.3mm crown, approximately 0.95mm wire width and 0.65mm wire thickness. The series is designed for professional fine-wire staplers used in upholstery, furniture, screening, insulation, roofing felt and other light fastening applications.
The 84 Series is commonly described in the market as a 1/2-inch crown staple family. Crown measurement conventions can vary between manufacturers, so cross-brand replacement should be based on the actual crown, wire section, leg length and strip geometry rather than the nominal 1/2-inch description alone.
KYA currently lists 84 Series leg lengths from 4mm to 16mm, including 84/04, 84/06, 84/08, 84/10, 84/12, 84/14 and 84/16. The galvanized versions use a chisel point and glue-collated straight-strip format, with 125 staples per stick and 10,000 staples per box.
| Product Type | Fine Wire Staple |
| Series | 84 Series |
| KYA Code | KYA-84 |
| Gauge | 21 Gauge |
| Nominal Crown | 12.3mm / 1/2" class |
| Wire Width | Approximately 0.95mm / 0.037" |
| Wire Thickness | Approximately 0.65mm / 0.026" |
| Wire Section | Approximately 0.95 × 0.65mm |
| Available Leg Lengths | 4, 6, 8, 10, 12, 14 and 16mm |
| Point | Chisel Point |
| Featured Finish | Electro-Galvanized / Zinc Plated Steel |
| Series Material Options | Galvanized Steel, Stainless Steel and Aluminum; confirm the required size and material combination when ordering |
| Collation | Glue-Collated Straight Strip |
| Staples per Stick | 125 pcs |
| Staples per Box | 10,000 pcs |
| Primary Applications | Upholstery, furniture, screening, insulation, roofing felt, fabric, molding and light assembly |
The KYA 84 Series uses a nominal 12.3mm crown and approximately 0.95 × 0.65mm wire section. These dimensions are more useful for cross-brand purchasing than gauge and crown-class descriptions alone.
The market commonly describes this fastener family as a 21GA 1/2-inch crown staple. However, manufacturers can publish either outside crown or internal crown measurements. Always compare the measurement method when replacing another brand.
KYA currently lists seven leg lengths within the 84 Series. The packaging table below separates each individual size rather than presenting the complete family as one unspecified staple length.
| Item | Leg Length | Inch Reference | Point | Finish | Pcs/Stick | Pcs/Box | Boxes/Carton | Cartons/Pallet |
|---|---|---|---|---|---|---|---|---|
| 84/04 | 4mm | 5/32" | Chisel | Galvanized | 125 | 10,000 | 12 | 60 |
| 84/06 | 6mm | 1/4" | Chisel | Galvanized | 125 | 10,000 | 12 | 60 |
| 84/08 | 8mm | 5/16" | Chisel | Galvanized | 125 | 10,000 | 12 | 60 |
| 84/10 | 10mm | 3/8" | Chisel | Galvanized | 125 | 10,000 | 12 | 60 |
| 84/12 | 12mm | 1/2" | Chisel | Galvanized | 125 | 10,000 | 12 | 40 |
| 84/14 | 14mm | 9/16" | Chisel | Galvanized | 125 | 10,000 | 12 | 40 |
| 84/16 | 16mm | 5/8" | Chisel | Galvanized | 125 | 10,000 | 12 | 40 |
The current KYA packaging table includes the 84/04 4mm size, while some KYA series summaries begin at 6mm. If the 4mm version is required, confirm current availability when requesting a quotation.
The 84 Series uses approximately 0.95 × 0.65mm fine wire. This relatively small wire profile is suited to upholstery, fabric and other applications where a less prominent fastener is preferred.
KYA publishes a nominal crown width of approximately 12.3mm. The series is commonly marketed as a 1/2-inch crown fastener class.
Because some manufacturers publish internal crown width while others publish an outside or nominal crown dimension, buyers should compare the complete staple drawing before cross-brand substitution.
The chisel-point legs concentrate the driving force at the staple tips to support penetration into compatible upholstery substrates, wood products, insulation and other light materials.
Actual penetration depends on staple length, substrate density, stapler power and tool setup. Point geometry should not be treated as a guarantee of penetration into every material.
The staples are glue collated into straight strips for magazine feeding. KYA currently lists 125 staples per stick.
Correct feeding depends on the complete fastener geometry, strip condition, stapler magazine and driver blade. Glue collation should not be interpreted as a guarantee of jam-free operation.
The featured galvanized configuration uses a zinc-plated steel surface. This provides corrosion protection compared with untreated steel and is commonly used for indoor and other protected applications.
For sustained moisture, exterior exposure or corrosive environments, confirm whether stainless steel or another material specification is required.
KYA cross-references the 84 Series with PREBENA AD, ATRO 84, FASCO 84 and OMER 84 tool families. These references are useful for purchasing comparison, but exact tool compatibility should still be confirmed by fastener geometry.
| Tool / Fastener Reference | Published Relationship | Buying Guidance |
|---|---|---|
| OMER 84.16 | 21GA, 0.65 × 0.95mm wire, 4–16mm fastener range | Strong 84 Series reference; confirm crown measurement convention and required leg length |
| PREBENA AD-Type | PREBENA cross-reference data maps OMER 84.16 to AD-type staples | Relevant cross-reference; confirm exact PREBENA tool model and leg-length range |
| FASCO 84 | KYA lists FASCO 84 as a cross-reference for this staple family | Confirm exact FASCO tool model and fastener drawing before substitution |
| ATRO 84 | KYA lists ATRO 84 as a cross-reference | Verify exact tool model, magazine and accepted staple length |
| Other 21GA Staplers | Specifications vary | Do not assume compatibility based only on gauge or nominal 1/2-inch crown |
When replacing another brand, provide the stapler manufacturer, exact tool model and existing staple reference. This is more reliable than selecting only by the words "21 gauge" or "1/2-inch crown."
KYA publishes approximately 12.3mm as the nominal crown dimension of its 84 Series. Other tool manufacturers may describe a similar 84-family tool using an internal crown measurement.
For example, a professional 84 Series stapler can be described as a 1/2-inch crown tool while its published internal crown width is smaller than the nominal outside or market-class dimension.
| Measurement | KYA 84 Series Reference |
|---|---|
| Market Crown Class | 1/2" |
| KYA Nominal Crown | Approximately 12.3mm |
| Wire Width | Approximately 0.95mm |
| Wire Thickness | Approximately 0.65mm |
For this reason, nominal crown names are useful for product-family identification but should not replace a dimensional comparison when purchasing cross-brand staples.
The fine-wire profile makes the 84 Series suitable for applications where a relatively small staple cross-section and broad crown are useful.
Furniture upholstery
Automotive and marine upholstery where the material specification permits this staple type
Fabric attachment
Screening and light mesh
Furniture backs and casework
Molding and light trim
Picture-frame and craft assembly
Insulation materials
Roofing felt where the roofing system permits fine-wire staples
General light industrial fastening
Fine-wire staples are commonly used to attach fabric, webbing, backing materials and other upholstery components to suitable wood and composite frames.
The 84 Series provides multiple leg lengths, allowing the buyer to select a shorter staple for thin materials or a longer leg where additional penetration is required and the stapler supports it.
The 21GA wire profile is suitable for selected furniture backs, cabinet components, molding and other light wood-product assembly where a fine-wire staple is specified.
For visible decorative surfaces, test the staple and tool setup on the actual material to confirm the finished appearance and penetration depth.
Screening, insulation facings and other lightweight sheet materials are common applications for fine-wire staples where the substrate and fastening specification allow this format.
For insulation systems, membranes and weather-resistive materials, follow the material manufacturer's fastening requirements. Some systems require cap fasteners, wider crowns or another specified fastener type.
KYA lists roofing felt among the applications for the 84 Series. Fine-wire staples may be used where the roofing-felt or underlayment manufacturer permits this fastening method.
Do not treat galvanized 84 Series staples as universally suitable for all roofing or exterior applications. Exposure conditions, local requirements and the roofing-system specification determine the required fastener material and fastening method.
The product family is currently listed by KYA with galvanized wire, stainless steel and aluminum material options. These should be treated as separate material configurations rather than describing one exact staple as all three materials at the same time.
| Material | General Selection Guidance |
|---|---|
| Electro-Galvanized Steel | Standard zinc-plated option for general protected applications where this finish meets the service environment |
| Stainless Steel | Select where higher corrosion resistance is required; confirm availability in the required 84 Series leg length |
| Aluminum | Separate lightweight material option where aluminum staples are specified; confirm exact size availability and tool suitability |
Staple length should be selected according to the thickness and compressibility of the material being fastened, the receiving substrate and the stapler's accepted leg-length range.
| Size | Leg Length | General Selection Consideration |
|---|---|---|
| 84/04–84/06 | 4–6mm | Thin fabrics, coverings and shallow fastening where the stapler supports these lengths |
| 84/08–84/10 | 8–10mm | Common upholstery, screening and light assembly applications |
| 84/12–84/16 | 12–16mm | Thicker assemblies requiring additional penetration where the substrate and tool permit the longer leg |
These are general selection considerations rather than fixed material-thickness limits. Test the selected staple in the actual substrate before high-volume production when penetration depth is critical.
| Staple Family | 84 Series |
| Gauge | 21GA |
| Nominal Crown | Approximately 12.3mm / 1/2" class |
| Wire Section | Approximately 0.95 × 0.65mm |
| Leg Length | Select required 4–16mm size |
| Point | Chisel |
| Collation | Glue-Collated Straight Strip |
| Staples per Stick | 125 |
| Staples per Box | 10,000 |
| Tool Information | Provide the exact stapler manufacturer, model and current staple reference |
For accurate quotation and compatibility checking, provide the required 84 Series leg length, quantity, staple material, exact stapler manufacturer and model, application and delivery destination.
For this staple family, specify KYA-84, 21GA, approximately 12.3mm nominal crown, 0.95 × 0.65mm wire, chisel point and the required 84/04–84/16 leg length.
KYA 84 Series staples are 21 gauge fine-wire staples with a nominal 12.3mm crown and approximately 0.95 × 0.65mm wire section.
The series is commonly described as a 1/2-inch crown fastener class. KYA publishes approximately 12.3mm as its nominal crown dimension. Other manufacturers may use a different crown measurement point, so compare the actual drawing when replacing another brand.
The technical specification used on this page is approximately 0.95mm wire width by 0.65mm thickness.
KYA product information has used more than one published wire-dimension entry for the 84 Series. The detailed technical and packing specification used on this page is approximately 0.95 × 0.65mm. Buyers replacing an existing staple should compare a sample or dimensional drawing if exact tolerances are critical.
KYA currently lists 84/04, 84/06, 84/08, 84/10, 84/12, 84/14 and 84/16, corresponding to 4mm through 16mm leg lengths.
KYA currently lists 125 staples per stick.
The published packing specification is 10,000 staples per box.
The galvanized sizes listed in the KYA packing table use a chisel point.
Yes. KYA identifies the 84 Series as a glue-collated straight-strip staple family.
Suitability depends on the exposure conditions. Electro-galvanized staples provide more corrosion protection than untreated steel, but sustained moisture or corrosive environments may require stainless steel or another specified material.
KYA lists stainless steel as a material option within the 84 Series. Confirm availability in the required leg length when requesting a quotation.
OMER 84.16 is a strong cross-reference because OMER publishes 21GA, approximately 0.65 × 0.95mm wire and a 4–16mm fastener range. Confirm the required leg length and crown measurement convention before substitution.
KYA cross-references the 84 Series with PREBENA AD, and PREBENA's own cross-reference information maps OMER 84.16 to AD-type staples. Confirm the exact PREBENA tool model and accepted leg lengths before ordering.
KYA lists FASCO 84 as a cross-reference. Because tool models and fastener dimensions can vary, confirm the exact FASCO tool model before treating the staple as a direct replacement.
ATRO 84 is listed by KYA as a cross-reference for the family. Check the exact stapler model, accepted staple length and crown specification before use.
No. Gauge and nominal crown class alone do not establish compatibility. Wire section, actual crown measurement, strip geometry, pitch and leg length also need to match the stapler.
Yes. Upholstery and furniture fastening are standard applications for this fine-wire staple class when the stapler, staple length and substrate are compatible.
Yes, for suitable screening and light mesh materials where a 21GA fine-wire staple is appropriate.
Yes, for suitable insulation materials and substrates where the installation specification permits this staple type.
KYA lists roofing felt as an application. Follow the roofing-felt or underlayment manufacturer's fastening instructions because some systems require a different fastener material, crown or cap system.
The main difference is leg length: 84/08 uses an 8mm leg, 84/10 uses 10mm and 84/12 uses 12mm. Select according to material thickness, substrate penetration and the stapler's accepted fastener range.
Provide the required 84 Series size, quantity, material, stapler manufacturer and exact model, application and delivery destination. Reference KYA-84 for this 21GA fine-wire staple family.
