Premium Brass Hex Jam Nuts, Brass Jam Nuts, Brass Heavy Hex Jam Nuts
Brass Jam Nuts: Premium Quality Hex Nuts & Brass Heavy Hex Nuts
We are one of the leading manufacturers and exporters of Brass Jam Nuts from India. We have been supplying high-quality Brass Hex Jam Nuts and Brass Heavy Hex Jam Nuts to the world market for many decades. Our state-of-the-art manufacturing facility equipped with precision CNC machines and advanced quality control systems ensures that each nut meets or exceeds international standards. The dedication to quality has positioned us as a preferred supplier for industries ranging from plumbing and electronics to marine applications. Our extensive experience in brass fastener manufacturing, combined with our commitment to customer satisfaction, enables us to provide customized solutions tailored to specific requirements while maintaining competitive pricing and reliable delivery schedules. Our Brass nuts and Brass Lock nuts are accepted worldwide since 3 decades.
Overview of Brass Jam Nuts
Brass Jam Nuts, also known as lock nuts, are secondary nuts used in conjunction with standard nuts to prevent loosening due to vibration or rotational forces. These specialized fasteners are designed with a lower profile than standard nuts and are tightened against a primary nut to create tension that secures the assembly. Our comprehensive range includes Brass Hex Jam Nuts and Brass Heavy Hex Jam Nuts manufactured to precise tolerances according to ASTM B16, ANSI/ASME B18.2.2, and other international standards.
Material Composition and Properties
Our Brass Jam Nuts are primarily manufactured from the following grades:
| Material Grade | Composition | Properties |
|---|---|---|
| C36000 (Free-Cutting Brass) | 61.5% Copper, 35.5% Zinc, 3% Lead | Excellent machinability, moderate strength, good corrosion resistance |
| C37700 (Forging Brass) | 60% Copper, 38% Zinc, 2% Lead | Superior forging characteristics, good strength, moderate corrosion resistance |
| C38500 (Architectural Bronze) | 57% Copper, 40% Zinc, 3% Lead | Good threading characteristics, enhanced appearance |
| C27000 (Yellow Brass) | 65% Copper, 35% Zinc | Higher strength, excellent corrosion resistance, lead-free option |
Material Property Table – Brass Alloys
| Property | C36000 | C37700 | C38500 | C27000 |
|---|---|---|---|---|
| Tensile Strength (MPa) | 340-470 | 380-480 | 330-450 | 370-500 |
| Yield Strength (MPa) | 140-250 | 170-270 | 130-240 | 150-280 |
| Hardness (Brinell) | 80-110 | 85-115 | 75-105 | 90-120 |
| Electrical Conductivity (% IACS) | 26 | 25 | 24 | 28 |
| Thermal Conductivity (W/m·K) | 115 | 110 | 108 | 120 |
| Coefficient of Thermal Expansion (10⁻⁶/°C) | 20.5 | 20.7 | 20.8 | 20.3 |
Brass Hex Jam Nuts
Brass Hex Jam Nuts feature a standard hexagonal shape with a reduced thickness compared to regular hex nuts. The six-sided design provides efficient gripping surfaces for installation and adjustment while maintaining a compact profile. These nuts are particularly suitable for applications requiring moderate torque and frequent adjustments.
Key Features:
- Thickness typically 60% that of standard hex nuts
- Precision-machined flat bearing surfaces
- Available in UNC and UNF thread configurations
- Width across flats conforming to ANSI/ASME B18.2.2 specifications
- Bright natural finish or optional plating
Manufacturing Process for Hex Jam Nuts
Our Brass Hex Jam Nuts are produced through a sophisticated manufacturing process:
- Material Selection: Premium-grade Brass rod or bar stock is selected and tested for chemical composition.
- Blanking: Brass stock is cut to precise lengths using automated cutting machines.
- Heading and Forming: Cold forming process shapes the hexagonal profile using high-pressure stamping equipment.
- Threading: Internal threads are precision-cut using CNC threading machines to ensure accurate thread pitch and profile.
- Chamfering: Edges are chamfered to remove burrs and facilitate easy installation.
- Surface Treatment: Optional surface treatments include polishing, lacquering, or specialized coatings.
- Quality Control: Multi-stage inspection including dimensional verification, thread gauging, and material testing.
Dimensional Specifications – Hex Jam Nuts
| Thread Size | Width Across Flats (mm) | Thickness (mm) | Thread Pitch (UNC) | Thread Pitch (UNF) |
|---|---|---|---|---|
| #4 | 7.14 ± 0.13 | 1.60 ± 0.13 | 40 | 48 |
| #6 | 8.00 ± 0.13 | 2.00 ± 0.13 | 32 | 40 |
| #8 | 9.00 ± 0.13 | 2.30 ± 0.13 | 32 | 36 |
| #10 | 9.50 ± 0.15 | 2.70 ± 0.13 | 24 | 32 |
| 1/4″ | 11.11 ± 0.15 | 3.18 ± 0.13 | 20 | 28 |
| 5/16″ | 12.70 ± 0.15 | 3.97 ± 0.15 | 18 | 24 |
| 3/8″ | 14.29 ± 0.15 | 4.76 ± 0.15 | 16 | 24 |
| 1/2″ | 19.05 ± 0.20 | 6.35 ± 0.15 | 13 | 20 |
| 5/8″ | 23.81 ± 0.20 | 7.94 ± 0.18 | 11 | 18 |
| 3/4″ | 28.58 ± 0.25 | 9.52 ± 0.18 | 10 | 16 |
| 7/8″ | 33.34 ± 0.25 | 11.11 ± 0.20 | 9 | 14 |
| 1″ | 38.10 ± 0.30 | 12.70 ± 0.20 | 8 | 12 |
Tolerance Class: 2B for standard applications, 3B available for precision requirements
Brass Heavy Hex Jam Nuts
Brass Heavy Hex Jam Nuts offer enhanced strength and greater surface area for applications requiring higher torque values or improved load distribution. The wider hex flats provide better tool engagement during installation and adjustment, making them ideal for heavy-duty applications in marine environments, industrial equipment, and specialized machinery.
Key Features:
- Width across flats approximately 10% larger than standard hex jam nuts
- Greater bearing surface area for improved load distribution
- Enhanced resistance to deformation under high torque
- Superior performance in vibration-intensive environments
- Available with optional anti-seize coatings
Manufacturing Process for Heavy Hex Jam Nuts
Our Heavy Hex Jam Nuts undergo a specialized manufacturing process:
- Raw Material Preparation: High-grade Brass billets are tested for composition and mechanical properties.
- Hot Forging: Material is heated and formed using precision forging equipment.
- Machining: CNC machining centers perform facing and chamfering operations.
- Threading: High-precision thread cutting using specialized threading equipment.
- Heat Treatment: Optional stress relief treatment to enhance mechanical properties.
- Surface Finishing: Precision polishing and optional surface treatments.
- Dimensional Inspection: Computer-aided inspection systems verify dimensional compliance.
- Thread Verification: Thread gauges validate thread profile and pitch accuracy.
Dimensional Specifications – Heavy Hex Jam Nuts
| Thread Size | Width Across Flats (mm) | Thickness (mm) | Thread Pitch (UNC) | Thread Pitch (UNF) |
|---|---|---|---|---|
| 1/4″ | 12.70 ± 0.15 | 3.58 ± 0.15 | 20 | 28 |
| 5/16″ | 14.29 ± 0.15 | 4.37 ± 0.15 | 18 | 24 |
| 3/8″ | 15.88 ± 0.18 | 5.16 ± 0.15 | 16 | 24 |
| 7/16″ | 17.46 ± 0.18 | 5.95 ± 0.18 | 14 | 20 |
| 1/2″ | 20.64 ± 0.20 | 6.75 ± 0.18 | 13 | 20 |
| 5/8″ | 25.40 ± 0.25 | 8.33 ± 0.18 | 11 | 18 |
| 3/4″ | 31.75 ± 0.25 | 9.92 ± 0.20 | 10 | 16 |
| 7/8″ | 36.51 ± 0.30 | 11.51 ± 0.20 | 9 | 14 |
| 1″ | 41.28 ± 0.30 | 13.10 ± 0.23 | 8 | 12 |
| 1-1/8″ | 47.63 ± 0.38 | 14.68 ± 0.23 | 7 | 12 |
| 1-1/4″ | 53.98 ± 0.38 | 16.27 ± 0.25 | 7 | 12 |
| 1-1/2″ | 63.50 ± 0.41 | 19.05 ± 0.25 | 6 | 12 |
Technical Specifications and Compliance
Our Brass Jam Nuts comply with numerous international standards, ensuring global compatibility and consistent performance:
International Standards:
- ASTM B16/B16M: Standard Specification for Free-Cutting Brass Rod, Bar and Shapes
- ANSI/ASME B18.2.2: Square and Hex Nuts
- ISO 4032: Hexagon Regular Nuts (Style 1)
- DIN 439: Hexagon Thin Nuts
- BS 4190: ISO Metric Black Hexagon Nuts
- IS 1367: Technical Supply Conditions for Threaded Steel Fasteners
- JIS B 1181: Hexagon Nuts and Hexagon Thin Nuts
Thread Specifications:
For UNC (Unified National Coarse) and UNF (Unified National Fine) threads, our jam nuts adhere to the following tolerance classes:
- Class 2B: Standard tolerance for general applications
- Class 3B: Precision tolerance for critical applications requiring tighter fit
Surface Finish Options:
| Finish Type | Description | Typical Applications |
|---|---|---|
| Natural Brass | Uncoated, polished surface | General purpose, decorative applications |
| Chrome Plated | Bright, corrosion-resistant coating | Moisture exposure, decorative hardware |
| Nickel Plated | Durable, semi-bright finish | Marine, chemical exposure environments |
| Tin Plated | Enhanced electrical conductivity | Electrical components, circuit applications |
| Antique Brass | Aged appearance with protective clear coat | Architectural, decorative hardware |
| Lacquered | Clear protective coating | Enhanced corrosion resistance, preserves appearance |
Industrial Applications
Brass Jam Nuts find wide applications across diverse industries due to their excellent corrosion resistance, electrical conductivity, and non-magnetic properties:
Plumbing and Fluid Handling: Brass jam nuts are extensively used in plumbing systems, valves, and pipe connections where corrosion resistance and reliability are paramount. Their compatibility with potable water systems makes them ideal for residential and commercial plumbing installations.
Electrical and Electronics: The superior electrical conductivity of Brass makes these jam nuts perfect for electrical connections, grounding applications, and terminal securing. They maintain reliable electrical contact while resisting oxidation.
Marine and Shipbuilding: Exceptional corrosion resistance to saltwater environments makes our Brass Jam Nuts essential components in marine equipment, boat fittings, and offshore installations where standard steel fasteners would rapidly deteriorate.
Architectural and Decorative: The attractive appearance and weathering characteristics of Brass make these fasteners popular in architectural applications, furniture manufacturing, and decorative hardware where aesthetics are as important as functionality.
Instrumentation and Precision Equipment: The dimensional stability and non-magnetic properties of Brass Jam Nuts make them ideal for sensitive instrumentation, measuring equipment, and applications where magnetic interference must be avoided.
Automotive and Transportation: Used in fuel systems, brake lines, and electrical components where corrosion resistance and reliable performance under vibration are essential.
Manufacturing Facilities and Equipment
Our state-of-the-art manufacturing facility is equipped with advanced machinery to ensure precision and consistency:
Machinery and Equipment:
- CNC Multi-Spindle Automatic Lathes: High-speed production of hex and heavy hex profiles with precise dimensional control
- CNC Threading Centers: Dedicated equipment for accurate thread cutting with automatic quality verification
- Brass Forging Equipment: Specialized presses for hot and cold forming operations
- Heat Treatment Furnaces: Controlled environment for stress relief and property enhancement
- Surface Finishing Lines: Automated polishing, plating, and coating systems
- Advanced Metrology Lab: Coordinate measuring machines, optical comparators, and thread gauging equipment
Quality Control Equipment:
- Spectrographic Analyzers: For material composition verification
- Hardness Testing Equipment: Ensures consistent mechanical properties
- Thread Profile Verification Systems: Laser-based thread form inspection
- Surface Roughness Testers: Monitors finish quality and consistency
- Environmental Testing Chambers: Simulates service conditions for performance validation
Our Unique Selling Propositions
Customization Capabilities
We offer extensive customization options to meet specific project requirements:
- Custom Thread Configurations: Non-standard thread pitches and profiles available upon request
- Special Material Formulations: Modified alloy compositions for enhanced properties
- Proprietary Surface Treatments: Application-specific finishes and coatings
- Dimensional Modifications: Altered thickness, width, or chamfer specifications
- Custom Packaging: Project-specific packaging with customer labeling and barcode systems
Production Flexibility
Our manufacturing processes are designed to accommodate varying production requirements:
- Scalable Batch Sizes: From small prototype quantities to high-volume production runs
- Expedited Production: Rush manufacturing capabilities for time-critical applications
- Just-in-Time Delivery: Inventory management programs for regular customers
- Rolling Production Schedules: Optimized manufacturing sequences to reduce lead times
Global Experience and Expertise
With three decades of experience serving international markets, we offer:
- Technical Consultation: Expert assistance with material selection and fastener specification
- Application Engineering Support: Collaborative problem-solving for challenging applications
- Industry-Specific Knowledge: Specialized expertise across multiple industrial sectors
- International Standards Compliance: Familiarity with global regulatory requirements
- Multilingual Technical Support: Communication in multiple languages for seamless collaboration
Packaging and Shipping
Our packaging and shipping processes are designed to ensure product protection and efficient logistics:
Standard Packaging Options:
- Bulk Packaging: Industrial-grade corrugated cartons with product segregation
- Retail-Ready Packaging: Blister packs or labeled boxes for distribution channels
- Protective Packaging: VCI (Volatile Corrosion Inhibitor) paper wrapping for long-term storage
- Custom Packaging: Private labeling, barcoding, and specific package configurations
Shipping Information:
- Standard Lead Time: 4-6 weeks for regular production orders
- Expedited Options: 2-3 week rush service available for critical requirements
- Shipping Methods: Sea freight, air freight, and express courier services available
- Documentation: Complete export documentation including certificates of origin, material certifications, and inspection reports
- Logistics Support: Assistance with customs clearance and international shipping requirements
Customer Questions and Answers
Q1: What is the difference between a jam nut and a standard hex nut?
A1: Jam nuts are specifically designed with a reduced thickness compared to standard hex nuts, typically 60-70% of the standard height. This reduced profile allows the jam nut to be used as a secondary locking nut against a primary nut, creating tension in the assembly that prevents loosening due to vibration or rotation. The thinner design also makes jam nuts ideal for applications with limited thread engagement or space constraints.
Q2: Why choose Brass over other materials for jam nuts?
A2: Brass offers multiple advantages including excellent corrosion resistance, particularly in marine and outdoor environments; good electrical conductivity for electrical applications; non-sparking properties for hazardous environments; attractive appearance for decorative applications; and antimicrobial properties beneficial in certain medical and food processing equipment. Additionally, Brass is non-magnetic, making it suitable for sensitive electronic equipment.
Q3: What thread types and sizes are available for your Brass Jam Nuts?
A3: Our Brass Jam Nuts are available in both UNC (Unified National Coarse) and UNF (Unified National Fine) thread configurations. Size ranges typically span from #4-40 to 1-1/2″ for standard products, with custom sizes available upon request. We also offer metric thread configurations according to ISO standards and can manufacture special thread forms for specific applications.
Q4: How do I determine the correct torque specifications for Brass Jam Nuts?
A4: Torque specifications for Brass Jam Nuts typically range from 60-70% of standard steel nut values due to the different material properties. We recommend consulting our application engineering team for specific torque recommendations based on your application, as factors such as thread lubrication, operating temperature, vibration exposure, and safety requirements can significantly affect optimal torque values. We can provide detailed torque charts for your specific application upon request.
Q5: What is the temperature range for Brass Jam Nuts?
A5: Our standard Brass Jam Nuts perform effectively in temperatures ranging from -40°C to +150°C (-40°F to +302°F). For applications involving higher temperatures, we recommend consulting with our engineering team, as material properties can change with elevated temperatures. For extreme temperature applications, special alloy formulations or alternative materials may be recommended.
Q6: Are your Brass Jam Nuts suitable for potable water applications?
A6: Yes, our Brass Jam Nuts are available in lead-free formulations (C27000 alloy) that comply with international standards for potable water contact, including NSF/ANSI 61 requirements. For potable water applications, we recommend specifying our certified low-lead or lead-free Brass alloys at the time of ordering to ensure regulatory compliance in your region.
Q7: How do Heavy Hex Jam Nuts differ from standard Hex Jam Nuts in performance?
A7: Heavy Hex Jam Nuts feature larger width-across-flats dimensions and slightly increased thickness compared to standard Hex Jam Nuts. This enhanced geometry provides several performance advantages: greater surface
