• Free Cutting Brass IS 319 Type (I): Excellent machinability with 58-60% copper content, ideal for high-speed production of precision components requiring tight tolerances
• Free Cutting Brass BS 249 Type (I): British standard equivalent with superior surface finish properties, widely specified in European and international markets
• High-Grade Free Cutting Brass: Premium alloy with enhanced lead content (2.5-3.5%) for superior chip-breaking characteristics in automated CNC machining
• CDA 360 Brass (Free Cutting Brass): North American standard designation, 61.5% copper composition providing excellent combination of strength and machinability
• CZ-360 High-Grade Brass: European designation for free-cutting brass with controlled zinc content (35-37%) ensuring consistent mechanical properties across production batches
• Custom Brass Alloys: Special compositions developed for specific customer applications requiring unique combinations of corrosion resistance, strength, or electrical conductivity

Why Choose Brass Fasteners? Brass offers natural corrosion resistance, non-magnetic properties, excellent electrical conductivity, aesthetic golden appearance, superior machinability, and maintains strength across wide temperature ranges (-200°C to +200°C).

⚙️ Professional Installation Guidelines for Brass Fasteners

• Torque Control: Brass is softer than steel — use 60-70% of steel fastener torque values to prevent thread stripping or head deformation during installation
• Anti-Seize Not Required: Brass has natural lubricity and won’t gall like stainless steel — avoid anti-seize compounds that can stain the brass finish
• Thread Engagement: Ensure minimum 1.5x diameter thread engagement in brass tapped holes; use helicoil inserts for higher strength requirements in soft materials
• Dissimilar Metals: When fastening brass to steel or aluminum, consider galvanic corrosion potential — use nylon washers as insulators in corrosive environments
• Tool Selection: Use hex keys or spanners with proper fit to prevent rounding brass heads — worn tools will damage the softer brass material
• Surface Protection: During installation, protect polished brass finishes with masking tape or cloth wrapping to prevent scratches and maintain aesthetic appearance

Definite Metal operates an ISO 9001:2015 certified brass component manufacturing facility in Jamnagar, Gujarat — India’s premier hub for non-ferrous metal machining. Our quality management system ensures every DIN 551 Slotted set screws meets stringent dimensional and material specifications through in-process inspection and final verification testing.

🏭 Manufacturing Capabilities: CNC turning centers, multi-spindle automatic lathes, thread rolling machines, and precision grinding equipment producing 500,000+ brass fasteners monthly with consistent quality.

📦 Stock & Delivery: Standard sizes M4 through M16 in lengths 10mm to 60mm ship within 24-48 hours from our warehouse. Express courier available for urgent requirements across India. International shipping via DHL/FedEx with 5-7 day transit to most countries.

💰 Competitive Pricing: Direct manufacturer pricing with no middlemen — volume discounts available for orders above 5,000 pieces. Request quotation with quantity breakdowns for best rates.

Engineers and procurement teams specifying DIN 551 Slotted set screws commonly require these complementary DIN standard components for complete assembly solutions:

• DIN 464 Knurled thumb screws
• DIN 466 Knurled nuts
• DIN 471 Retaining rings
• DIN 478 Square Head Bolts
• DIN 508 Nuts for T-slots
• DIN 525 Welding studs
• DIN 529 A Anchor Bolts
• DIN 546 Slotted Round Nut
• DIN 547 Two-hole nuts
• DIN 553 Slotted set screws with cone point

💡 Complete Supply Solution: Definite Metal stocks the full DIN standard range. Order all your fastening components from a single certified manufacturer — simplifies procurement, ensures consistent quality, and reduces lead times.

Complete Product Information & Technical Resources

Definite Metal is India’s leading manufacturer and exporter of DIN 551 Slotted set screws in premium brass materials conforming to DIN 551 Slotted international standard specifications. Our ISO 9001:2015 certified manufacturing facility in Jamnagar, Gujarat produces brass fasteners with full material traceability, dimensional inspection reports, and mechanical property certificates for every production batch. We supply brass DIN 551 Slotted fasteners in all standard metric sizes from M2 through M64, with options in Free Cutting Brass IS 319, BS 249 brass alloy, CDA 360 free cutting brass, and CZ-360 high-grade brass compositions. Surface finishes include natural brass finish, nickel plated brass, chrome plated brass, antique brass patina, and polished brass mirror finish depending on aesthetic and functional requirements. Our technical sales team provides expert consultation on brass material selection, finish recommendations, torque specifications, and installation best practices for your specific application. We serve automotive OEMs, electronic equipment manufacturers, marine hardware suppliers, architectural hardware companies, precision instrument makers, electrical switchgear manufacturers, and furniture hardware distributors with both small-quantity prototype orders and high-volume production runs. Download technical datasheets PDF, 3D CAD models in STEP and IGES formats, material test certificates MTC, and brass alloy composition reports directly from our website. Custom specifications available including non-standard thread pitches, special lengths, left-hand threads, custom head styles, and unique finish requirements. Fast delivery across India with express shipping to Delhi, Mumbai, Bangalore, Chennai, Pune, Ahmedabad, Kolkata, and international export to UAE, Saudi Arabia, USA, UK, Germany, and 40+ countries worldwide.