304 Stainless Steel Threaded Fasteners CNC Milling Parts

• Customization: Available
• After-sales Service: 3 Months
• Warranty: 3 Months
• Model NO.: Y1226
• Condition: New
• Certification: ISO9001, ISO13485
• Standard: GB
• Customized: Customized
• Material: Stainless Steel
• Application: Metal Processing Machinery Parts
• Appearance: Electropolishing Passivation
• Processing: Processing According to The Drawing
• Secondary Processing: Sandblasting Scale
• Transport Package: Vacuum Packaging Cardboard Box
• Specification: 6.0*65
• Trademark: yue lin sen
• Origin: Dongguan, Guangdong
• HS Code: 7301200000
• Production Capacity: 51000pieces/Year
• Package Size: 30.00cm * 25.00cm * 15.00cm
• Package Gross Weight: 3.800kg

Product Description

304 Stainless Steel Threaded Fasteners CNC Milling Parts

Product Application:
These are precision-engineered, non-standard threaded fasteners and connectors used in applications where corrosion resistance, specific geometry, and high strength are critical, and where standard off-the-shelf fasteners are inadequate.

High-Corrosion Environments: Chemical processing equipment, marine hardware, food processing machinery, and outdoor architectural fixtures requiring durable, rust-resistant fasteners.
Precision Machinery & Automation: Custom shoulder screws, adjustment screws, pivot pins with threads, and lead screw nuts forassemblies, optical mounts, and robotic joints.
Medical & Laboratory Equipment (Non-Implantable): Specialized screws for device housings, instrument adjustment knobs, and mounting posts that must withstand frequent cleaning and sterilization.
Aerospace & Defense (Non-Flight Critical): Ground support equipment brackets, access panel screws, and instrumentation fasteners needing good strength and environmental resistance.
Electronics & Semiconductor: Standoffs, spacers, and captive panel screws for enclosures and chassis in corrosive or cleanroom-adjacent environments.
 
Product Description:
We manufacture custom threaded fasteners and precision threaded components from 304 stainless steel using CNC milling and turning processes. Unlike mass-produced fasteners, these are made-to-order to meet exact dimensional, functional, and aesthetic requirements. This service is ideal for producing special shoulder bolts, custom head designs (e.g., flanged, knurled), bolts with unusual drive types, threaded rods with specific end features, or nuts with integrated flanges or locking mechanisms. CNC machining from solid 304 bar stock ensures excellent material integrity, precise thread forms (metric, unified, ACME, etc.), and the ability to incorporate complex features not possible with standard forging or tapping. 304 stainless steel provides the ideal balance of good corrosion resistance, strength, formability, and cost-effectiveness for demanding industrial applications.

Base Material	Material	AISI 304 Stainless Steel / UNS S30400 (Round, Hex, or Square Bar Stock)
	Standard	Conforms to ASTM A276/A479.
	Typical Properties	Tensile Strength: ~515 MPa, Yield Strength: ~205 MPa, Good ductility and corrosion resistance.
Product Range	Fastener Types	Screws:Shoulder, Set, Cap, Machine, Thumb, Custom head shapes. Bolts:Hex, Socket Head, Flange, Special geometry. Nuts:Hex, Flange, Coupling, Custom profiles. Threaded Rods & Studs.
	Thread Specifications	Standard:Metric (M3-M20), Unified (UNC/UNF 4-40 to 3/4"). Special:ACME, trapezoidal, custom pitch/diameter. Threads per ISO, ASME/ANSI standards.
Manufacturing & Precision	Primary Process	CNC Turning(for axisymmetric parts) andCNC Milling(for complex heads or features).
	Thread Production	CNC Single-Point Threading(highest precision/control) orThread Milling(for special forms).
	Dimensional Tolerance	Standard:±0.05 mm on major diameters.High Precision:±0.02 mm achievable for critical fits.
	Thread Tolerance	Typically6gfor external,6Hfor internal threads per ISO 965-1. Tighter classes (4g6g) available.
	Geometric Tolerances	Concentricity, perpendicularity held to0.05 mmTIR standard.
Design Features	Customizable Elements	Head Type/Drive:Hex socket, Torx, slotted, Phillips, custom broaching. Head Geometry:Diameter, height, underhead features. Shank:Shoulders, reduced diameters, knurls, grooves. Point Styles:Chamfered, dog point, cone point, flat.
Finishing	Standard Finish	Machined finish, deburred.
	Enhanced Finishes	Passivation(ASTM A967),Electropolishing,Bead/Sand Blasting,Vibratory Finishing.
	Coatings	Generally not required for corrosion resistance, but available (e.g., PTFE, decorative PVD).
Quality & Inspection	Inspection	100% dimensional check of critical features. Thread verification with thread gauges (GO/NO-GO) or optical comparators.
	Material Traceability	Mill Test Certificate provided confirming grade and composition.
	Mechanical Testing	Hardness testing, proof load testing available upon request.
	Packaging	Bulk packaging (bags, boxes) or individual packaging as specified.

Company Profile

Dongguan Yu Lin Sen Metal Technology Co., Ltd.: Has obtained theGB/T 19001-2016/ISO 9001:2015 quality system certification, as well as the GB/T42061-2022/ISO 13485:2016 medical device quality system certification. Focuses on the research and production of non-standard metal medical device precision parts, mainly as machined metal products. It possesses dozens of high-precision engra-ving lathes and CNCequipment,including CNC numerical control, numerical control centering machine, automatic lathes, turningmilling combined machines, precision laser cutting processing of stainless steel capillary tubes and stainless steel thin-walled tubes for sec-ondary processing. Main materials: stainless steel tubes, stainless steel, copper, aluminum alloy, etc. for non-standard processing and customization. Widely applied in tools, electronics, electrical appliances, medical devices, automotive parts, transportation, and other industries. The company has been recognized by the industry for its "quality-oriented, honest operation" philosophy, mainly providing
non-standard part prototyping and batch production processing, supporting custom drawings and sample customization, etc. The process flow is stable and efficient, integrating industry and trade for rapid delivery, with craftsmanship spirit ensuring quality, without middlemen, excellent value for money, and the company adheres to the business philosophy of "customer first, quality first, striving for excellence, win-win cooperation", "Confident and reliable after-sales guarantee!!!".

Product Advantage

It has obtained the quality system certification in accordance with GB/T 19001-2016/ISO 9001:2015, as well as the medical device quality system certification in accordance withGB/T 42061-2022/ISO13485:2016. We focus on processing and customizing products for medical device hardware, and we have dozens of precision CNC lathes and precision laser cutting processing equipment. We also have a R&D team composed of senior engineers and technicians. We are committed to providing customers with high-quality and
high-precision processing and customization services for hardware parts, ensuring that each product meets the strict standards and requirements of the medical device industry. Through continuous optimization of production processes and improvement of technical levels, we can meet the diverse needs of customers and contribute to the development of the medical device industry.

Certifications