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KYA F40 18 gauge galvanized brad nails are 40 mm straight-strip finish fasteners for compatible 18GA brad nailers. With an approximately 1.25 × 1.00 mm wire profile, 2.00 mm head width and nominal 1-9/16 inch length, F40 provides deeper penetration than short brads while maintaining the relatively small fastening mark associated with 18 gauge finish nails.
The 40 mm size is suitable for many professional finish and woodworking applications including casing, molding, chair rail, paneling, beadboard, cabinetry, furniture components and other assemblies where the workpiece and substrate require more penetration than shorter 18GA brads provide.
The standard F40 configuration uses an electro-galvanized finish for general indoor and protected applications. Stainless-steel versions are also available within the product range where greater corrosion resistance is required; confirm the required stainless grade and specification before ordering.
40 mm / nominal 1-9/16" length: suitable for finish applications requiring more penetration than short 18GA brads.
18 gauge profile: approximately 1.25 mm wide × 1.00 mm thick.
2.00 mm head width: compact finish-nail head for a relatively small visible fastening point.
Chisel point: designed for controlled penetration into compatible wood and engineered-wood materials.
Straight strip collation: for compatible 18GA straight-magazine brad nailers.
Electro-galvanized finish: provides basic corrosion protection for general indoor and protected applications.
100 nails per stick: suitable for many professional 18GA brad nailer magazines.
5,000 nails per box: bulk packaging for distributors, woodworking shops and production users.
| Parameter | Specification |
|---|---|
| Model | F40 |
| Product Code | KYA-F40 |
| Fastener Type | Straight Collated Brad Nail |
| Gauge | 18 Gauge |
| Length | 40 mm / nominal 1-9/16" |
| Head Width | Approximately 2.00 mm |
| Wire Width | Approximately 1.25 mm |
| Wire Thickness | Approximately 1.00 mm |
| Point | Chisel Point |
| Collation | Straight Strip |
| Standard Finish | Electro-Galvanized |
| Alternative Material | Stainless steel option available according to specification |
| Nails per Stick | 100 pcs |
| Nails per Box | 5,000 pcs |
| Boxes per Carton | 10 boxes |
| Cartons per Pallet | 60 cartons |
| Gross Weight per Carton | Approximately 17.8 kg |
The 40 mm F40 sits between shorter 38 mm / 1-1/2-inch brads and longer 41–45 mm brads. This makes it useful when a finish application needs more penetration than a short brad but does not require the full length of a 2-inch fastener.
The correct nail length depends on the thickness of the workpiece, the substrate, required penetration and the fastening recommendations for the material being installed. A longer brad does not automatically provide a better joint.
Door and window casing
Decorative molding
Chair rail
Baseboard and shoe molding where the selected length is appropriate
Paneling and beadboard
Cabinet assembly and cabinet trim
Furniture components and finish work
Plywood and MDF assemblies where an 18GA brad is suitable
General finish carpentry and joinery
A 40 mm 18GA brad can be used in suitable cabinet and furniture assemblies where the combined material thickness and substrate allow the fastener to achieve appropriate penetration without exiting the opposite surface.
Typical uses can include face-frame components, cabinet trim, decorative wood parts, panel attachment and furniture finishing operations. Thin cabinet backing may require a shorter brad, so F40 should not be selected solely because it is described as a cabinet fastener.
The 40 mm length is commonly used within professional finish-nailing ranges for casing, molding and joinery. It provides additional penetration compared with 25–35 mm brads while keeping the smaller profile of an 18GA finish fastener.
For thick or heavy trim requiring greater holding capacity, a 16GA or 15GA finish nail may be more appropriate. Choose the fastener according to the actual trim thickness and substrate rather than using gauge alone.
The standard F40 uses an electro-galvanized zinc finish. This provides basic corrosion resistance compared with untreated carbon steel and is commonly used for indoor trim, cabinet, furniture and protected woodworking applications.
Electro-galvanized fasteners should not automatically be specified for permanently wet, marine, salt-air or other highly corrosive environments. A more corrosion-resistant fastener material should be selected where the application requires it.
| Material / Finish | Typical Selection |
|---|---|
| Electro-Galvanized Steel | Indoor trim, cabinetry, furniture, molding and protected woodworking. |
| Stainless Steel | Applications requiring greater corrosion resistance. Confirm exact stainless grade, length and availability before ordering. |
A 40 mm F40 brad falls within the published length range of many professional 18GA straight brad nailers. However, gauge and length alone do not prove complete interchangeability. The strip geometry, head profile and magazine specification should also match.
| Tool Platform | Published Fastener Range | F40 Guidance |
|---|---|---|
| DEWALT DCN680 | 18GA brads, approximately 5/8"–2-1/8" | 40 mm is within the published length range; confirm straight-strip and head profile. |
| DEWALT DWFP12233 | 18GA brads, approximately 5/8"–2-1/8" | 40 mm is within the published length range; confirm fastener profile before production use. |
| Metabo HPT NT1850DFT | 18GA straight brads, approximately 5/8"–2" | 40 mm falls within the published length range. |
| SENCO F-18XP | 18GA AX / AY straight brads, approximately 5/8"–2-1/8" | 40 mm falls within the tool's overall length range; compare the KYA profile with the required AX / AY fastener style. |
| BOSTITCH BT1855-E | Compatible with BOSTITCH BT13-series 18GA brads including a 40 mm model. | BOSTITCH publishes a 40 mm 18GA brad with approximately 1.25 mm wire and 2 mm head dimensions. |
The 40 mm 18GA format is an established professional brad-nail size. Cross-reference information is useful when purchasing from a different supplier, but complete fastener geometry should still be checked.
| Reference | Length | Gauge | Notes |
|---|---|---|---|
| KYA F40 | 40 mm / nominal 1-9/16" | 18GA | Approximately 1.25 × 1.00 mm, 2.00 mm head. |
| BOSTITCH BT1340B / BT1340GA Class | 40 mm | 18GA | BOSTITCH publishes approximately 1.25 mm wire and 2 mm head for its 40 mm brad. |
For cross-brand use, compare the exact brad cross section, head style, strip alignment and nailer's approved fastener specification before purchasing production quantities.
SENCO's current AX-series straight brad range includes approximately 1-1/2" and 1-5/8" lengths around the 40 mm F40 size. This means F40 falls within the operating range of compatible SENCO 18GA tools, but it should not automatically be described as identical to a specific SENCO SKU.
When replacing an AX- or AY-style fastener, compare the head style and strip profile in addition to the overall nail length.
| Packing Level | F40 Quantity |
|---|---|
| Nails per Stick | 100 pcs |
| Nails per Box | 5,000 pcs |
| Boxes per Carton | 10 boxes |
| Cartons per Pallet | 60 cartons |
| Gross Weight per Carton | Approximately 17.8 kg |
| Item | Length | Pcs / Stick | Pcs / Box | Boxes / Carton | Cartons / Pallet | G.W. / Carton |
|---|---|---|---|---|---|---|
| F40 | 40 mm / 1-9/16" | 100 | 5,000 | 10 | 60 | 17.8 kg |
| F15 | 15 mm / nominal 5/8" | 100 | 5,000 | 30 | 50 | 20.05 kg |
| F50 | 50 mm / 2" | 100 | 5,000 | 10 | 50 | 21.8 kg |
An exact 1-9/16 inch measurement equals approximately 39.69 mm. The F40 product is manufactured to the nominal 40 mm metric length and is commonly marketed within the 1-9/16-inch size class.
For purchasing and tool matching, use the specific F40 model and 40 mm length rather than relying only on the rounded inch description.
| Brad Length | General Selection Consideration |
|---|---|
| 15–25 mm | Shorter finish work, thinner trim, decorative components and shallow fastening applications. |
| 30–38 mm | General trim, cabinetry, molding and woodworking. |
| F40 – 40 mm | Mid-to-long 18GA finish fastening where additional penetration is needed. |
| 45–50 mm | Longer finish applications where the nailer, workpiece and substrate allow deeper penetration. |
| Fastener | General Characteristic | Typical Selection |
|---|---|---|
| 18GA Brad Nail | Small wire profile and compact head. | Trim, molding, cabinetry, paneling and furniture finish work. |
| 16GA Finish Nail | Heavier cross section than an 18GA brad. | Heavier casing, baseboard and finish applications requiring greater fastening capacity. |
| 15GA Finish Nail | Larger finish-nail platform. | Thicker trim and more demanding finish connections. |
| Selection Factor | What to Check |
|---|---|
| Workpiece Thickness | Make sure 40 mm is appropriate for the material being attached. |
| Substrate | Consider solid wood, plywood, MDF or other substrate density. |
| Required Penetration | Select enough penetration for the application without excessive breakthrough. |
| Nailer | Confirm that the tool accepts 40 mm 18GA straight brads. |
| Environment | Select galvanized or a more corrosion-resistant material according to exposure. |
| Fastening Requirement | Use a heavier finish nail where the application requires greater fastening capacity than an 18GA brad provides. |
| Order Information | What to Provide |
|---|---|
| Fastener Model | F40 / KYA-F40. |
| Length | 40 mm / nominal 1-9/16". |
| Gauge | 18GA. |
| Nailer Brand and Model | Provide the exact tool model for compatibility checking. |
| Finish / Material | Specify electro-galvanized or required stainless-steel configuration. |
| Application | Specify casing, molding, cabinetry, paneling, furniture or other use. |
| Quantity | Provide required boxes, cartons, pallets or estimated annual demand. |
Discuss Your F40 Brad Nail Requirement
KYA F40 is a 40 mm 18 gauge straight brad nail, commonly described as a nominal 1-9/16-inch fastener.
The current KYA specification lists an approximately 1.25 mm width × 1.00 mm thickness with an approximately 2.00 mm head width.
The current specification lists 100 nails per stick.
F40 is currently listed with 5,000 nails per box.
The current F40 packing table lists 10 boxes per carton.
The current F40 packing table lists 60 cartons per pallet.
The published F40 gross weight is approximately 17.8 kg per carton. Confirm current packaging with the quotation before shipment.
The standard F40 product shown on this page uses an electro-galvanized finish.
Yes. Indoor casing, molding, paneling, cabinetry and other suitable finish applications are typical uses for galvanized 18GA brads.
It can be used in suitable cabinet assemblies where the backing and frame thickness require a 40 mm brad. For thin backing panels, a shorter nail may be more appropriate, so the material thickness should be checked first.
F40 can be used in selected drawer and furniture assemblies where an 18GA brad and 40 mm penetration are appropriate. Joint design, material thickness and adhesive use should determine the final fastener choice.
F40 provides relatively deep penetration for an 18GA brad, but 18GA remains a light finish-fastener platform. Thick or demanding trim applications may require 16GA or 15GA finish nails instead.
The DEWALT DCN680 accepts 18GA brads from approximately 5/8" to 2-1/8", so a 40 mm brad falls within its published length range. Confirm the complete fastener profile before changing suppliers.
The DWFP12233 is specified for 18GA brads from approximately 5/8" to 2-1/8", placing F40 within its published length range. Verify strip and head geometry before production use.
The NT1850DFT accepts approximately 5/8" to 2" 18GA straight brads, so 40 mm is within its published fastener-length range.
The SENCO F-18XP accepts 18GA AX and AY straight brads between approximately 5/8" and 2-1/8". F40 falls within that length range, but the required AX or AY profile should be compared before substitution.
Both belong to the 40 mm 18GA brad class. BOSTITCH publishes a 40 mm brad with approximately 1.25 mm wire diameter and 2 mm head dimensions. Cross-brand use should still be confirmed from the complete fastener profile and tool specification.
An exact 1-9/16 inch equals approximately 39.69 mm. F40 is manufactured to the nominal 40 mm metric size and is commonly grouped within the 1-9/16-inch class.
The relatively small 18GA profile can reduce splitting compared with heavier fasteners, but splitting cannot be ruled out. Wood species, moisture, edge distance, grain direction and drive depth all affect the result.
No fastener can guarantee jam-free operation under every condition. Correct strip geometry, tool condition, loading, driver condition, air pressure or battery condition and maintenance all affect feeding.
KYA lists stainless steel as an available finish or material option within this product family. Confirm the exact stainless grade and 40 mm availability when requesting a quotation.
The standard electro-galvanized version is primarily suited to indoor and protected applications. For demanding exterior, wet, salt-air or corrosive environments, select an appropriate corrosion-resistant fastener material.
F40 is an 18GA finish brad. It should not replace structural nails, screws or approved connectors where the assembly requires structural fastening capacity.
Yes. Check magazine feeding, drive depth, head position, surface appearance and holding performance in the actual nailer and workpiece before full-volume production.
Provide the required quantity, nailer brand and model, application, material or finish requirement, packaging requirement and destination market.
KYA supplies F40 40 mm / nominal 1-9/16-inch 18 gauge galvanized brad nails for fastener distributors, cabinet and furniture manufacturers, woodworking suppliers, trim contractors and other professional users. Send your nailer model, required quantity, application and material requirement to confirm the appropriate configuration.
The current product information lists an MOQ of 50 cartons (one pallet), an estimated lead time of 15–20 days, and a free 1,000-piece F40 sample pack; the buyer pays freight. Confirm the current production schedule, sample availability and shipping terms when requesting a quotation.
