Product Details

Packaging Details	Plastic bag + carton + pallet	Finsh	Passivation** (Standard for optimal corrosion resistance)
Supply Ability	5000000	Tolerant	+/- 0.05mm
Minimum Order Quantity	50000	Features	Male-Female Threaded Ends
Product Application	Computer Servers	Easy To Install	Yes
Total Length	12 mm	Lead Time	15~20 working days
Corrosion Resistance	High	Place of Origin	China
Quantity	Pack of 1000	Material	304 Stainless Steel
Specification	ISO	Model Number	Customizable
Certification	ISO9001	Thread	Male-female
Brand Name	guanbiao	Payment Terms	T/T
Type	Standoff Screws	Price	Negotiable
Delivery Time	15-20 work days	Samples	free samples
Strength	High

#4-40 Hex Standoff Screw - Male-Female Threaded Spacer - Stainless Steel - Passivated

Precision-machined spacers designed for electronic and industrial applications requiring US Unified Thread Standard (UTS) components.

Product Attributes

Product Application	Computer Servers
Thread	Male-female
Lead Time	15~20 working days
Finish	Passivation (Standard for optimal corrosion resistance)
Material	304 Stainless Steel
Tolerance	+/- 0.05mm
Features	Male-Female Threaded Ends
Strength	High
Corrosion Resistance	High
Specification	ISO
Quantity	Pack of 1000
Type	Standoff Screws
Samples	Free samples available
Easy To Install	Yes
Total Length	12 mm

Technical Specifications

Thread Standard	#4-40 UNF (Unified National Fine)
Thread Diameter	Major Dia: ~0.112" / 2.84mm
Hex Size (AF)	4.75 mm (3/16 Inch)
Total Length (L)	12 mm (Common, Highly Customizable)
Male Thread Length (L_m)	7 mm (Common, Highly Customizable)
Female Thread Depth (L_f)	~5 mm (L - L_m, Customizable)
Material	304 Stainless Steel
Surface Treatment	Passivation (Standard for optimal corrosion resistance)
Key Feature	Male-Female Threaded Ends
Customization	All dimensions (L, L_m, L_f) are fully customizable

Primary Uses & Applications

Computer Servers & Motherboards: Stacking PCBs and providing ground points in equipment designed to U.S. specifications.
Networking Hardware: Mounting boards and components in routers, switches, and modems using #4-40 screws.
Data Storage Arrays: Spacing drive trays and controller boards within storage enclosures.
Test & Measurement Equipment: Building and spacing internal modules of US-made electronic test gear.
Consumer Electronics: Used in high-end audio equipment, gaming consoles, and appliances requiring fine-threaded standoffs.

Installation Guide

Tool Selection: Use a 3/16 inch (4.76mm) hex wrench to match the standoff's head size.
Install Male Thread: Screw the male thread (#4-40) into a pre-tapped hole in the chassis or a base PCB.
Stack Components: Place the board or component that needs to be spaced over the installed standoff.
Secure Assembly: Insert a #4-40 machine screw through the component and into the female thread of the standoff.
Custom Configurations: We can customize the male and female thread lengths to suit your specific requirements.

Our Advantages

Support and Services

Our team provides comprehensive support including:

Packing and Shipping

Our factory accepts customized drawings. Contact us to discuss specific certifications or custom parameters for your project.

304 Stainless Steel #4-40 Hex Standoff Screw 12mm Male-Female Thread