M3 Hex Standoff 40mm A2-70 Stainless Steel PCB Spacer

Price	Negotiable
MOQ	50000
Delivery Time	15-20 work days
Brand	guanbiao
Place of Origin	China
Certification	ISO9001
Model Number	M3
Packaging Details	Plastic bag + carton + pallet
Payment Terms	T/T
Supply Ability	5000000

Product Details

Product Specification

Total Length	40 mm	Lead Time	15~20 working days
Place of Origin	China	Packaging Details	Plastic bag + carton + pallet
Quantity	Pack of 1000	Material	A2-70 Stainless Steel (304)
Specification	ISO	Finsh	Blue-White Zinc Plating
Model Number	M3	Supply Ability	5000000
Certification	ISO9001	Thread	Male-female
Tolerant	+/- 0.05mm	Brand Name	guanbiao
Payment Terms	T/T	Type	Standoff Screws
Price	Negotiable	Delivery Time	15-20 work days
Samples	free samples	Minimum Order Quantity	50000
Product Application	PCB Stacking	Easy To Install	Yes
Strength	High

Product Description

M3 Hex Standoff - Male-Female - A2-70 Stainless Steel - Blue-Zinc Plated - for PCB Spacing - H4.75-M3x40+6

M3 male-female hex standoffs. A2-70 (304) stainless steel, blue-zinc plating. Size H4.75-M3x40+6. Ideal for servers, networking gear & electronics. Fully customizable lengths & thread specs.

Our Hex Male-Female Threaded Standoffs are precision-engineered spacers designed for reliable board-level stacking and spacing in electronic assemblies. The H4.75-M3x40+6 model features a hexagonal body for easy installation with a standard wrench, with male threads on one end (6mm long) and female threads on the other (34mm deep), enabling flexible and secure connections over longer distances. Manufactured from A2-70 (304) Stainless Steel and finished with a blue-white zinc plating, they offer a cost-effective solution with good corrosion resistance for general-purpose indoor applications, making them a staple in electronics manufacturing.

Hex male-female threaded standoffs with blue-zinc plating

TECHNICAL SPECIFICATIONS

Thread Diameter	M3 x 0.5mm
Hex Size (AF)	4.75 mm (3/16 Inch)
Total Length (L)	40 mm (Fully Customizable)
Male Thread Length (L_m)	6 mm (Fully Customizable)
Female Thread Depth (L_f)	34 mm (L - L_m, Fully Customizable)
Material	A2-70 Stainless Steel (304)
Surface Treatment	Blue-White Zinc Plating
Tensile Strength	700 MPa (min)
Customization	Custom L, L_m, L_f, and thread sizes (M2-M6)

Close-up view of hex standoff showing threads and plating

Primary Uses & Applications

PCB Stacking: Creating multiple layers of printed circuit boards (PCBs) in servers, routers, and data storage equipment. The 40mm length is ideal for creating significant space for components and airflow.
Component Spacing: Providing precise space between boards and chassis for heat dissipation and to prevent electrical shorts.
Equipment Mounting: Securing modules, daughterboards, and drives within computers, industrial controls, and test instruments.
Grounding: Establishing reliable electrical grounding paths between PCBs and metal enclosures.
Consumer Electronics: Used in appliances, networking devices, and audio/video equipment.

How to Use

Tool Selection: Use a 3/16 inch (4.76mm) hex wrench to match the standoff's head size.
Install Male Thread: Screw the 6mm male thread (M3) into a pre-tapped hole in the chassis or a base PCB. Tighten securely using the hex wrench, but avoid over-torquing to prevent damaging the threads.
Stack Components: Place the board or component that needs to be spaced over the installed standoff.
Secure Assembly: Insert a M3 machine screw (sold separately, choose an appropriate length for the application, up to ~32mm to avoid bottoming out) through the component and into the female thread of the standoff. Tighten the screw to complete the assembly.
Custom Configurations: We can customize the male and female thread lengths to suit your specific design and stack-up height requirements.

Our Advantages

More than 20 years of screw production experience and non-standard screw custom development experience, providing cost-effective solutions and helping solve fastener supply chain challenges.
Precise production equipment with all imported machinery from Taiwan to produce precision screws and hardware accessories. Free sample testing available for compatibility verification.
Complete management system with multiple strict quality control checks for every batch of products.
Dedicated account management for seamless collaboration and system-supporting services.

Multiple hex standoffs showing consistent quality and finish

Support and Services

Our team of knowledgeable professionals provides comprehensive support for all aspects of our hex standoff screws, including selection advice, installation guidance, and troubleshooting assistance. We offer detailed product specifications, material safety data sheets, and step-by-step installation guides.

For maintenance tips and best practices, our experts provide valuable advice to extend product life and maintain performance. We are committed to exceptional customer support and ensuring our products meet the highest standards of quality and reliability.

Packing and Shipping

Our hex standoff screws are carefully packaged in moisture-resistant plastic bags within sturdy cardboard boxes, with packing materials to prevent movement during transit. Larger orders are palletized and shrink-wrapped for additional protection.

We ship using reliable courier services with tracking information provided for all orders.

Our factory accepts customized drawings. Please contact us if you require specific certifications or need to adjust technical parameters to meet your project requirements.

M3 Hex Standoff 40mm A2-70 Stainless Steel PCB Spacer

Product Details

Product Specification

Product Description

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