KYA 3.5x38mm Phosphate-Coated Drywall Screws are plastic-belt collated screws for compatible autofeed screw guns. The featured screw measures 3.5mm in diameter × 38mm / 1-1/2 inches long and uses a bugle head designed for drywall and gypsum-board fastening.
Manufactured from C1022A steel, this product is available with black phosphate or grey phosphate surface treatment. Phosphate-coated drywall screws are primarily suited to dry interior applications where the coating, screw geometry and substrate meet the installation requirements.
The screws are supplied on a plastic collated belt for use with compatible automatic-feed screwdrivers. The current KYA specification lists 1,000 screws per box, 10,000 screws per carton and 240,000 screws per pallet for the 3.5×38mm size.
| Specification | Details |
|---|---|
| Product Type | Phosphate-Coated Collated Drywall Screw |
| Primary Size | 3.5mm × 38mm / approximately .138" × 1-1/2" |
| Diameter | 3.5mm |
| Length | 38mm / approximately 1-1/2" |
| Material | C1022A Steel |
| Head Type | Bugle Head |
| Surface Finish | Black Phosphate / Grey Phosphate |
| Collation | Plastic Belt / Collated Strip |
| Thread Type | Thread type is not specified in the available product data; confirm coarse, fine or other thread before application selection |
| Point Type | Point type is not specified in the available product data; confirm sharp point, self-drilling or other point configuration |
| Drive / Recess | Drive / recess type is not specified in the available product data; confirm the required driver bit before ordering |
| Screws per Strip | Confirm current 3.5×38mm production and packing specification |
| Screws per Box | 1,000 pcs |
| Screws per Carton | 10,000 pcs |
| Screws per Pallet | 240,000 pcs |
| Listed Weight | Approximately 1.86g per screw |
| Tool Requirement | Compatible autofeed screw gun matched to 38mm screw length, belt geometry and drive specification |
Important purchasing note: thread type, point geometry and drive recess determine whether a drywall screw is suitable for timber framing, metal track or another substrate. These three specifications are not clearly identified in the available product data and should be confirmed before tool qualification or application selection.
Request 3.5x38mm Screw Pricing 
Collated drywall screws are arranged sequentially on a plastic carrier strip so a compatible autofeed screwdriver can advance the next screw automatically. This reduces manual screw loading during repetitive drywall installation.
Compatibility depends on more than screw length. The screw diameter, drive recess, strip dimensions, strip pitch, screw spacing and autofeed nosepiece must match the tool system.
A bugle head uses a curved transition between the screw shank and head. This geometry is commonly used for gypsum board because it allows the head to seat into the board surface while distributing pressure over the paper facing.
Correct installation depth remains important. The screw head should be set sufficiently for finishing without being driven so deeply that the drywall face paper is completely broken.
| Finish | General Selection Guidance |
|---|---|
| Black Phosphate | Common drywall screw surface treatment for clean, dry interior applications where a phosphate-coated carbon-steel fastener is specified |
| Grey Phosphate | Alternative phosphate finish for compatible dry interior drywall and construction applications |
Phosphate coating should not be treated as a universal exterior corrosion-protection system. Coating thickness and salt-spray performance are not specified in the available product data, so any corrosion-resistance requirement should be confirmed from the production specification or a verified test report.
The same 3.5×38mm overall size can be manufactured with different thread and point configurations. This changes the substrate for which the screw is intended. Confirm the exact KYA thread and point configuration before selecting the screw for timber-stud or metal-stud installation.
| Drywall Screw Configuration | Typical Industry Application | 3.5x38mm Selection Guidance |
|---|---|---|
| Coarse Thread + Sharp Point | Commonly used for plasterboard / drywall to timber studs | Confirm the thread and point configuration before selecting this application |
| Fine Thread + Sharp Point | Commonly used for drywall to suitable light-gauge metal framing | Confirm the thread and point configuration before selecting this application |
| Fine Thread + Self-Drilling Point | Used with compatible heavier metal framing within the screw's rated drilling capacity | Use this configuration only when the production specification confirms a self-drilling point |
The 38mm / approximately 1-1/2-inch length provides more available penetration than shorter 25mm, 30mm, 32mm or 35mm screws in the same KYA collated drywall screw family.
The correct screw length depends on drywall thickness, number of board layers, substrate and required thread engagement. Do not select the longest available screw automatically.
| Selection Factor | Why It Matters |
|---|---|
| Board Thickness | Drywall thickness consumes part of the total screw length before the thread reaches the framing. |
| Single or Multiple Layers | Multiple board layers usually require a longer fastener than a single-layer installation. |
| Framing Material | Wood and metal framing require different thread and point selection. |
| Required Thread Engagement | Adequate threaded length must remain in the receiving substrate after passing through the board. |
| Autofeed Tool Range | The magazine or attachment must accept a 38mm / 1-1/2-inch collated screw. |
KYA references Makita, Hilti, SENCO, Festool, Hitachi, Ridgid and Bosch screw-gun systems as potential compatibility references. Brand name alone does not establish interchangeability; the exact tool, magazine and strip geometry must match the screw configuration.
| Compatibility Parameter | What to Verify |
|---|---|
| Screw Length | Tool must accept 38mm / approximately 1-1/2-inch screws |
| Screw Diameter | Tool and strip system must accept the 3.5mm screw diameter |
| Drive Recess | Bit type must match the exact screw recess |
| Plastic Strip | Strip width, pitch and screw spacing must fit the feed mechanism |
| Nosepiece | Nosepiece and depth-adjustment system must suit the screw length and head geometry |
| Thread / Point | Fastener geometry must suit the intended wood or metal substrate |
This screw is not universally compatible with all autofeed screwdrivers. Provide KYA with the exact tool manufacturer, model and magazine or attachment when cross-brand compatibility needs to be confirmed.
DURASPIN is SENCO's collated autofeed screw system. KYA supplies its own plastic-belt collated screws, autofeed drywall screws and collated drywall screws. Compatibility with a SENCO DURASPIN system should be verified by the exact tool model and strip geometry.
If a buyer wants to use KYA screws in a SENCO system, compatibility should be evaluated from the exact screw and strip dimensions rather than using DURASPIN as a generic product description.
The primary application is fastening drywall or gypsum board with a compatible autofeed screw gun. Exact substrate suitability depends on the screw's thread and point configuration.
Plastic-belt collation is useful for repetitive installation where reducing individual screw loading can improve workflow and consistency.
Phosphate-coated screws are most appropriately positioned for clean, dry interior construction and fit-out work when the screw geometry matches the framing material.
Cement board and Hardie board may require specific fastener geometry and corrosion resistance. Use this product for those materials only where the board manufacturer permits the screw head, thread, point and phosphate-coated carbon-steel specification.
A phosphate-coated 3.5mm drywall screw should not be treated as a generic decking, step or load-bearing structural fastener. Those applications require fasteners selected for the applicable structural and environmental requirements.
Decking and exterior structures normally require fasteners selected for structural performance, substrate, length and environmental corrosion exposure. This 3.5×38mm phosphate-coated screw is primarily intended for drywall and compatible interior applications unless separate technical data confirms another use.
| Packing Parameter | 3.5x38mm Specification |
|---|---|
| Box Size | 56 × 26 × 5cm |
| Carton Size | 57 × 27 × 26.5cm |
| Screws per Box | 1,000 pcs |
| Screws per Carton | 10,000 pcs |
| Screws per Pallet | 240,000 pcs |
| Listed Unit Weight | 1.86g per screw |
The following table shows KYA's broader collated drywall screw size and packing range. The featured configuration is 3.5×38mm; other sizes are provided as family-level selection references.
| Size | Box Size | Carton Size | Box Qty | Carton Qty | Pallet Qty | Weight g/pc |
|---|---|---|---|---|---|---|
| 3.5×25mm | 56×26×3cm | 57×27×16.5cm | 1,000 | 10,000 | 240,000 | 1.27 |
| 3.5×30mm | 56×26×4cm | 57×27×21.5cm | 1,000 | 10,000 | 240,000 | 1.55 |
| 3.5×32mm | 56×26×4cm | 57×27×21.5cm | 1,000 | 10,000 | 240,000 | 1.60 |
| 3.5×35mm | 56×26×4cm | 57×27×21.5cm | 1,000 | 10,000 | 240,000 | 1.67 |
| 3.5×38mm | 56×26×5cm | 57×27×26.5cm | 1,000 | 10,000 | 240,000 | 1.86 |
| 3.5×42mm | 56×26×5cm | 57×27×26.5cm | 1,000 | 10,000 | 240,000 | 1.99 |
| 3.5×45mm | 56×26×5cm | 57×27×26.5cm | 1,000 | 10,000 | 240,000 | 2.10 |
| 3.5×50mm | 56×26×6cm | 57×27×31.5cm | 1,000 | 10,000 | 240,000 | 2.42 |
| 3.5×55mm | 56×26×6cm | 57×27×31.5cm | 1,000 | 10,000 | 240,000 | 2.50 |
| 3.5×60mm | 56×26×8cm | 57×27×25.5cm | 1,000 | 6,000 | 108,000 | 2.89 |
| 3.5×75mm | 56×26×8cm | 57×27×25.5cm | 1,000 | 6,000 | 108,000 | 3.30 |
| Ordering Information | What to Provide |
|---|---|
| Size | 3.5mm × 38mm / approximately .138" × 1-1/2" |
| Material | C1022A Steel |
| Head | Bugle Head |
| Finish | Specify Black Phosphate or Grey Phosphate |
| Thread Type | Confirm required coarse, fine or other thread configuration |
| Point Type | Confirm sharp point, self-drilling or other required point geometry |
| Drive Type | Provide required recess / driver-bit specification |
| Autofeed Tool | Provide exact screw gun and magazine / attachment model |
| Application | Provide drywall thickness, substrate and number of board layers |
| Quantity | Boxes, cartons, pallets or annual purchasing volume |
Send Your Drywall Screw Requirements
The featured KYA product measures 3.5mm in diameter × 38mm / approximately 1-1/2 inches long.
The current KYA product specification lists C1022A steel.
KYA currently lists black phosphating and grey phosphating for this product.
They should primarily be treated as interior fasteners unless a specific coating test and project specification establish otherwise. Exterior, wet or corrosive environments generally require a fastener with corrosion protection selected for that exposure.
A bugle head has a curved underside designed to seat into drywall or gypsum board with a gradual transition from the shank to the head, helping reduce concentrated pressure on the board facing when driven to the correct depth.
The thread type is not identified in the available product data. Confirm the production specification before ordering because coarse and fine drywall screw threads are intended for different substrate conditions.
The exact point type is not identified in the available product data. Confirm whether the required configuration is sharp-point, self-drilling or another point type before ordering.
Drywall-to-timber screws commonly use a coarse-thread sharp-point configuration. Confirm that this KYA 3.5×38mm product has the required thread and point before specifying it for timber framing.
Metal framing typically requires a thread and point configuration selected for the steel thickness. Confirm the exact KYA thread, point and permitted metal thickness before use.
Phosphate and zinc plating are different surface treatments. Phosphate-coated drywall screws are commonly selected for dry interior work, while zinc-plated products provide a different level and type of corrosion protection. Select the finish according to the application specification.
The current KYA 3.5×38mm packing specification lists 1,000 screws per box.
KYA currently lists 10,000 screws per carton for the 3.5×38mm size.
The current packing table lists 240,000 screws per pallet.
The number of screws per strip is not clearly stated in the available product data. Confirm the strip quantity and belt dimensions before cross-brand autofeed tool qualification.
KYA references several major tool brands as compatibility references, but fit should be verified by the exact screw-gun model, attachment, screw length, drive recess and plastic-strip geometry rather than by brand name alone.
KYA supplies its own collated drywall screws. DURASPIN is associated with SENCO's autofeed screw system. When considering use with a SENCO tool, verify the exact tool model and strip compatibility rather than treating DURASPIN as a generic screw type.
Cement and Hardie board installations may require dedicated fastener specifications. Use these screws only where the board manufacturer permits the screw diameter, length, head, thread, point and phosphate-coated material.
They should not be promoted as general deck or step fasteners. Exterior decking normally requires fasteners specifically selected for structural performance and environmental corrosion exposure.
Contact KYA Fasteners to confirm current sample availability. For a new autofeed tool or application, test the exact screw strip with the intended tool, drywall assembly and framing substrate before bulk purchasing.
Ask About 3.5x38mm Drywall Screws
KYA supplies collated drywall screws for fastener distributors, drywall-system suppliers, construction-material distributors, screw-gun distributors and professional drywall installation businesses.
For quotations on 3.5×38mm phosphate-coated collated drywall screws, provide the required phosphate finish, thread type, point type, drive recess, exact autofeed screw-gun model, drywall and substrate specification, quantity, packing requirement and destination market.
