T12 Torx Pan Head Self Tapping Screw Integrated Bonded Washer 10# ST4.8 Carbon Steel Tapping Screw

Our T12 torx pan head self tapping screw with integrated bonded washer is precision manufactured carbon steel fastener in 10# ST4.8 specification. As an experienced custom fastener manufacturer, we provide full OEM & custom service to modify dimension, surface finish and structure based on clients’ engineering drawings or physical samples. The one-piece bonded washer is integrally formed to avoid loose falling during assembly; T12 torx drive improves anti-slip fastening performance for automated installation lines. After degreasing cleaning and trivalent grey zinc plating, the tapping screw owns superior anti-rust property for long-term indoor & outdoor equipment assembly. We produce this automotive torx tapping screw with strict dimensional tolerance control per international fastener standards to satisfy global industrial clients’ bulk procurement needs.

• Product Name: Pan Head Self Tapping Screw Bonded Washer
• Drive Type: T12 Torx Internal Drive
• Head Style: Pan Head with Integrated Bonded Washer
• Washer Parameter: Outer Diameter 10mm, Thickness 1.2mm, one-piece bonded design
• Thread Spec: 10# / ST4.8 self tapping thread
• Overall Length: 17.5mm
• Raw Material: Carbon Steel
• Surface Treatment: Degreasing cleaning + Trivalent Grey Zinc Plating
• Dimensional Tolerance: ±0.05mm precision tolerance for critical dimensions as per ISO fastener standards
• Production Process: Raw material cutting → cold forging forming → thread rolling → drive forming → washer integrated bonding → degreasing cleaning → surface zinc plating → finished inspection

• Automotive interior & exterior component assembly: car dashboard, door panel, plastic trim, fixed interior fittings
• Household appliance assembly: refrigerator, washing machine, small home appliance plastic & metal fitting fastening
• Electronic equipment: power supply shell, consumer electronics plastic housing mounting
• Furniture & cabinet industry: wooden/particle board furniture fixed connection
• General machinery & plastic casing assembly for commercial equipment

As reliable custom fastener manufacturer, we provide full OEM & custom service for this ST4.8 torx tapping screw and all kinds of precision tapping screws:

• Accept custom production based on customer’s original samples or engineering drawings, adjust thread size, total length, washer size, head type as required
• Custom raw material grade from multiple carbon steel grades, alternative alloy steel upon request
• Custom surface finishing beyond standard trivalent grey zinc: yellow zinc, black zinc, ni-plating via OEM customization
• Custom packaging solution including bulk bag, small carton packing with private label per buyers’ brand requirement
• Small trial order & bulk mass production support for global clients’ diverse order demand

• Integrated bonded one-piece washer eliminates clients’ extra washer assembling procedure, saves manual installation cost and avoids missing loose washers during high-speed assembly
• T12 torx drive structure prevents screwdriver slipping during fastening, reduces screw head damage rate to cut clients’ after-sale defective loss
• Precision thread rolling craft ensures stable tapping performance on plastic, wood and thin metal, avoid thread sliding out during long-term equipment usage
• Trivalent grey zinc plating improves anti-corrosion performance, solving clients’ rust failure problem for products used in damp working environment
• Strict dimensional precision with tight tolerance reduces assembly mismatching rate for clients’ automated production line, improves overall production efficiency

• Raw material incoming inspection: carbon steel material chemical composition and hardness test before production
• In-process QC: real-time dimensional sampling check for washer size, screw length, thread dimension during cold forging & thread rolling
• Post-plating inspection: zinc coating thickness and anti-corrosion salt spray test for trivalent grey zinc finished screws
• Final finished full random sampling inspection covering drive size, washer bonding tightness and tapping performance before shipment; all test records reserved for custom OEM order traceability
• Comply with international fastener inspection standards, support third-party lab inspection as per clients’ custom requirement

• Q1: Can I get custom dimension of this T12 torx pan head self tapping screw via your OEM custom service?
  A: Yes, as professional manufacturer, we adjust length, washer OD and thread spec per your drawing/sample.
• Q2: Is small trial order available before bulk order?
  A: We accept small sample trial order to verify quality for all custom OEM tapping screw projects.
• Q3: Can I change surface finish other than standard trivalent grey zinc?
  A: Custom plating finish options are available with our custom service upon your demand.
• Q4: What’s your standard delivery lead time for bulk OEM orders?
  A: Standard bulk order lead time is 7–15 working days based on order quantity and custom requirement.