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KYA N851 is a pneumatic 16 gauge medium crown stapler designed for sheathing, subflooring, crate and box assembly, pallets, furniture framing and other professional construction and industrial wood-fastening applications. It drives compatible N Series staples from approximately 25mm to 50mm long with a 10.8mm / 7/16 inch crown.
The N851 weighs approximately 2.35kg, measures 350 × 100 × 320mm and holds up to 160 staples. KYA lists an operating pressure of 70–120 PSI / approximately 5–8.3 bar, together with an aluminum body, cam-lock jam access, adjustable exhaust and rubber grip.
Compatible KYA N Series staples use an approximately 10.8mm crown with a 1.60 × 1.40mm wire section. Staple crown, wire dimensions, leg length, collation and tool magazine geometry should all be confirmed before replacing fasteners from another brand.
| Specification | Details |
| Model | N851 / KYA-N851 |
| Tool Type | Pneumatic Medium Crown Construction Stapler |
| Staple Gauge | 16 Gauge |
| Staple Series | N Series Heavy Wire Staples |
| Crown Width | Approx. 10.8mm / 7/16" |
| Tool Staple Length Range | 25–50mm / 1"–2" |
| Wire Width | Approx. 1.60mm / 0.063" |
| Wire Thickness | Approx. 1.40mm / 0.055" |
| Magazine Capacity | Approx. 160 Staples |
| Operating Pressure | 70–120 PSI / Approx. 5–8.3 bar |
| Net Weight | Approx. 2.35kg / 5.17lbs |
| Tool Dimensions | Approx. 350 × 100 × 320mm |
| Housing | Aluminum Body |
| Jam Access | Cam-Lock Quick-Clear Nose |
| Exhaust | 360° Adjustable Exhaust |
| Grip | Rubber Grip |
| Typical Applications | Sheathing, Subflooring, Crates, Boxes, Pallets, Furniture Framing and General Construction Fastening |
The N851 is designed around the 16GA N Series heavy-wire staple format. KYA N Series staples use an approximately 10.8mm / 7/16 inch crown with a 1.60mm wire width and 1.40mm wire thickness.
The broader KYA N Series fastener family includes multiple lengths, but the N851 tool itself should be operated with compatible staples from approximately 25mm to 50mm long.
The approximately 10.8mm / 7/16 inch crown provides a wider bearing surface than narrow crown staples. This makes the N Series format suitable for sheathing, subflooring, crates, pallets and other construction or industrial wood assemblies where a wider staple crown is appropriate.
Crown width must match the tool magazine and driver system. Other 16GA staple families can use different crown widths and should not be substituted based on gauge alone.
Compatible N Series staples use an approximately 1.60 × 1.40mm wire section. This heavier wire profile is intended for construction and industrial fastening where more staple material and greater holding capacity are required than with fine-wire upholstery staples.
When replacing staples from another supplier, confirm wire width and thickness as well as crown width, leg length and collation.
The N851 drives compatible staples from approximately 25mm / 1 inch to 50mm / 2 inches long. This range covers common construction applications requiring different penetration depths.
Staple length should be selected according to panel thickness, substrate density, joint design and project requirements. Longer staples are not automatically preferable because excessive penetration can cause breakthrough or interfere with the reverse side of the assembly.
The N851 magazine holds approximately 160 compatible staples per load. The higher-capacity magazine reduces reload frequency during repetitive sheathing, subflooring, crate and industrial assembly work.
Use straight, correctly collated staple strips and keep the magazine and feed path clean. Damaged strips, incorrect fasteners or accumulated debris can cause feed interruptions.
The cam-lock nose provides access to the driver and staple path when a jam or misfeed occurs, reducing the amount of disassembly required for routine clearing.
Disconnect the compressed-air supply before opening the nose, removing a jammed fastener or servicing the tool.
The adjustable exhaust allows discharged air to be directed away from the operator and work surface.
Exhaust direction can improve working conditions during repetitive fastening, but normal eye protection, hearing protection and workplace controls should still be used where required.
The N851 uses an aluminum body and weighs approximately 2.35kg / 5.17lbs. The tool is designed for professional pneumatic construction and industrial fastening applications.
For continuous production or installation work, total operator load also depends on hose routing, working height, fastening frequency and work position.
The rubber grip provides a stable contact surface during handling and repetitive fastening.
Keep the grip clean and dry and route the air hose so that it does not interfere with tool positioning or movement.
KYA lists an operating pressure range of approximately 70–120 PSI / 5–8.3 bar for the N851.
Start with the lowest pressure that achieves the required staple depth and increase only as necessary. Actual penetration depends on staple length, substrate density, material thickness and air supply.
The N851 can be used for compatible plywood and OSB sheathing applications where 16GA 7/16-inch crown staples are permitted by the project specification, fastening schedule and applicable building requirements.
Sheathing fastening requirements can specify fastener length, spacing, corrosion resistance and edge distance. Confirm the approved fastening schedule before installation.
16GA medium crown staples are commonly used for selected subfloor and underlayment applications where the panel manufacturer, structural design and installation specification permit this fastener type.
For plywood-to-joist fastening, confirm required staple length, fastening pattern and whether adhesive or additional mechanical fasteners are specified for the floor system.
The N851 is suitable for selected wooden crate, box and industrial packaging assembly where the 16GA medium crown staple provides sufficient penetration and joint strength.
Heavy export crates or load-bearing packaging should be evaluated according to panel thickness, timber species, joint design and handling loads rather than fastener size alone.
N Series staples can be used in selected pallet components and pallet repair operations where medium crown staples are specified for the joint.
Pallet fastening requirements vary according to pallet design and load. Structural deck-board and stringer joints may require nails or other fasteners with specific withdrawal and shear performance.
The N851 can be used for selected internal furniture frames, bracing, plywood components and other assemblies where a 16GA medium crown staple provides the required holding performance.
For highly loaded structural joints, hardwood frames or joints subject to repeated dynamic loads, validate the staple specification and joint design before production.
7/16-inch crown construction staplers can be used in selected siding, fascia and soffit applications when the material manufacturer permits staple fastening and the correct tool setup is used.
Vinyl siding can require specific fastener placement, clearance and tool attachments so the panel remains free to move with temperature changes. Follow the siding manufacturer's installation requirements rather than fastening the panel tightly against the substrate.
Plywood and OSB sheathing where specified
Subfloor and underlayment installation where specified
Wooden crate and box assembly
Selected pallet assembly and repair
Furniture framing and bracing
Furring applications
Fascia and soffit fastening where permitted
Selected siding applications
Roof-deck and panel fastening where the project specification permits 16GA staples
General industrial wood assembly
| Buyer Check | N851 Reference |
|---|---|
| Staple Series | N Series |
| Gauge | 16GA |
| Crown | Approx. 10.8mm / 7/16" |
| Wire Width | Approx. 1.60mm |
| Wire Thickness | Approx. 1.40mm |
| Tool Leg Range | 25–50mm / 1"–2" |
| Point Type | Chisel and Other Configurations Subject to Fastener Specification |
| Material | Galvanized Steel or Stainless Steel Depending on Application |
| Collation | Confirm Strip Geometry and Collation Before Cross-Brand Substitution |
KYA lists PREBENA L, BOSTITCH B100, FASCO G, KIHLBERG 783, MAX 16GA, NIKEMA G5562, OMER M2, SENCO N, SPOTNAILS 66 and ATRO 100 as market references associated with its N Series staple geometry.
These references are useful when sourcing replacement staples, but they should not be treated as automatic compatibility guarantees. Verify the exact stapler model, crown width, wire section, leg-length range and collation before changing fastener brands.
| Parameter | KYA N851 | Typical 16GA 7/16" Tool |
|---|---|---|
| Gauge | 16GA | 16GA |
| Crown | 10.8mm / 7/16" | Approximately 7/16" |
| Staple Length | 25–50mm / 1"–2" | Commonly 1"–2" |
| Magazine Capacity | 160 Staples | Commonly about 150–160 Staples |
| Operating Pressure | 70–120 PSI | Commonly around 70–120 or 80–120 PSI |
| Weight | Approx. 2.35kg | Varies by tool design |
| Primary Use | Sheathing, Subflooring, Crates and Industrial Wood Assembly | Similar Construction and Wood-Fastening Applications |
| Issue | Possible Cause | Recommended Check |
|---|---|---|
| Air Leak at Cylinder Cap | Head-valve seal or O-ring wear | Disconnect the air supply, inspect the sealing components and replace worn parts according to the tool parts specification. |
| Air Leak at Trigger | Damaged trigger O-ring, contaminated valve or worn valve component | Disconnect the air supply, clean the valve area and replace damaged sealing or valve components as required. |
| Repeated Staple Jams | Incorrect fasteners, bent strips, worn driver guide or damaged cover | Confirm N Series geometry, inspect staple strips, clean the feed path and replace damaged driver or guide components. |
| Staples Not Fully Driven | Low pressure, dense substrate, excessive staple length or worn driver | Check operating pressure, staple length, air supply, substrate density and driver condition. |
| Inconsistent Feeding | Incorrect collation, damaged strips or magazine contamination | Verify staple strip geometry, remove damaged fasteners and clean the magazine channel. |
Always disconnect the compressed-air supply before loading, clearing jams, opening the nose, inspecting internal components or servicing the stapler.
KYA supplies pneumatic construction staplers and N Series heavy-wire staples for woodworking companies, crate and pallet manufacturers, furniture factories, construction-tool dealers and industrial fastener distributors.
For bulk purchasing, provide the required tool quantity, staple length, fastener material, application and compressed-air conditions. If replacing another stapler or fastener brand, include the current tool model and staple specification for compatibility checking.
KYA supplies pneumatic staplers for construction, sheathing, subflooring, furniture, cabinetry, packaging and industrial wood fastening in multiple gauges, crown widths and fastener-length ranges.
The N851 uses compatible 16GA N Series heavy-wire staples with an approximately 10.8mm / 7/16-inch crown and a 1.60 × 1.40mm wire section.
The current N851 specification lists compatible staple lengths from approximately 25mm to 50mm / 1 inch to 2 inches.
The compatible N Series crown is approximately 10.8mm / 7/16 inch.
KYA lists approximately 1.60mm wire width × 1.40mm wire thickness for its N Series staples.
The magazine holds approximately 160 compatible staples.
The N851 has a high-capacity 160-staple magazine, but other professional 7/16-inch construction staplers also offer capacities around 150–160 staples. Capacity should be compared together with tool size, weight and application requirements.
KYA lists an operating pressure range of approximately 70–120 PSI / 5–8.3 bar.
The listed tool weight is approximately 2.35kg / 5.17lbs.
The listed dimensions are approximately 350 × 100 × 320mm.
Yes. The N851 uses a cam-lock nose that provides access to the driver area when a jam or misfeed occurs. Disconnect the compressed-air supply before clearing the tool.
Yes. The tool includes a 360° adjustable exhaust that allows discharged air to be directed away from the operator or work surface.
Yes, for subflooring and underlayment systems where 16GA 7/16-inch crown staples are permitted. Confirm the panel manufacturer's fastening instructions, staple length and fastening schedule before installation.
It can be used for compatible plywood and OSB sheathing where the project specification permits 16GA medium-crown staples. Fastener spacing, penetration and corrosion requirements should be verified before installation.
Yes. Wooden crate and box assembly is a common application for professional 16GA 7/16-inch crown construction staplers when the selected fastener provides sufficient penetration and joint strength.
It can be used for selected pallet components and repair operations where the joint is designed for medium-crown staples. Critical pallet joints may require nails or another fastening system with specified structural performance.
Professional 7/16-inch construction staplers can be used for selected vinyl siding installations when the siding manufacturer permits staples and the correct tool attachment and fastening technique are used. Follow the siding manufacturer's installation instructions.
No. Nominal gauge and crown alone do not guarantee compatibility. Wire section, leg length, collation and strip geometry should also match the N851 magazine and driver system.
KYA offers N Series staples in galvanized and stainless-steel configurations. Select the fastener material according to corrosion exposure, substrate and project requirements.
Common causes include incorrect staple dimensions, damaged strips, bent fasteners, debris in the magazine, worn driver components or damaged guide components.
Provide the required tool quantity, staple length, fastener material, application and compressed-air conditions. If replacing another tool or staple brand, include the current tool model and staple dimensions.
