304/410 Stainless Steel Phillips Countersunk Head Self-Drilling Screws

Product Description

304/410 Stainless Steel Phillips Countersunk Head Self-Drilling Screws is recommended for sheet metal and enclosure assembly and related OEM fastening projects where 304/410 stainless steel, Plain, and Flat need to match the final assembly rather than a generic stock screw.

Typical Applications

• Sheet metal and enclosure assembly.
• Hvac, roofing or light metal fabrication.
• Production lines seeking fewer pre-drilling steps.

Parameter Notes for RFQ Review

• Stainless steel supports corrosion resistance and clean appearance in equipment, electronics and outdoor-facing assemblies.
• Plain, polished or passivated finishes are suitable when the base material appearance and clean surface are preferred.
• A flat or countersunk head is selected when the screw needs to sit flush with the surface.
• The listed thread range (M2.9 M3.5 M3.9 M4.2 M4.8 M5.5 M6.3) indicates which metric or gauge families can be reviewed for the same product style. The length range (9mm-80mm) should be checked against clamping thickness, thread engagement and clearance behind the assembly.
• Drive note: Phillips / cross recessed drive. Confirm driver access, assembly torque and whether service teams need matching tools.

Suitable OEM / RFQ Needs

Best fit for OEM/RFQ buyers who need sheet metal and enclosure assembly, HVAC, roofing or light metal fabrication, with review of material (304/410 stainless steel), finish (Plain), thread range (M2.9 M3.5 M3.9 M4.2 M4.8 M5.5 M6.3) and length (9mm-80mm). Send drawings, target quantity, application load/environment and any sample photos for a practical quotation.

Buyer Questions

• Can this product be customized from a drawing or sample? Yes. XiYu can review drawings or samples for custom dimensions, material, finish, head style and production quantity. For this item, start from the listed 304/410 stainless steel / Plain direction and confirm any changes in the RFQ.
• Does this screw need a pilot hole? Self-drilling styles can reduce or remove the pre-drilling step in suitable sheet metal. Self-tapping or thread-forming styles may still need a pilot hole depending on material thickness and hardness.
• What RFQ information helps speed up quotation? Provide thread size (M2.9 M3.5 M3.9 M4.2 M4.8 M5.5 M6.3), length (9mm-80mm), material, finish, drawing or photo, target quantity, application environment and whether samples are required.
• Can samples be reviewed before bulk production? Sample review can be discussed for custom or production RFQs. For appearance-critical or functional screws, sample approval helps confirm finish, fit and assembly behavior before mass production.