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M3 Stainless Steel 304 Fastener
QS Fastener: M3 Stainless Steel 304 Fastener
Name: M3 Stainless Steel 304 Fastener
Standard: DIN933
Material: SS304
Size: M3
Lenght: 40 mm
Surface: Natural color
Standard: DIN933
Material: SS304
Size: M3
Lenght: 40 mm
Surface: Natural color
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M3 Stainless Steel 304 Fastener is precision-manufactured from genuine SS304 austenitic stainless steel. This fully threaded M3×40 mm DIN933 bolt offers outstanding corrosion resistance and high strength; the 40 mm extended length meets deep-hole assembly requirements. The natural, coating-free finish produces zero magnetic interference and has passed a 96-hour salt-spray test. It is widely used in marine, medical, food-grade equipment, and high-end electronic products, giving you secure fastening once and for all.
In the electronics sector, this M3 Stainless Steel 304 Fastener (M3×40 mm DIN933, fully threaded) is chiefly employed in the following scenarios:
1. Motherboard-to-chassis fastening
The 40 mm long M3 Stainless Steel 304 Fastener passes through PCB, insulating standoffs, heat sinks, and metal housing in one step, achieving a “one-bolt-four-joint” assembly that eliminates cumulative tolerances caused by multi-stage fastening.
The 40 mm long M3 Stainless Steel 304 Fastener passes through PCB, insulating standoffs, heat sinks, and metal housing in one step, achieving a “one-bolt-four-joint” assembly that eliminates cumulative tolerances caused by multi-stage fastening.
2. Heat-sink mounting
Thanks to its fully threaded design, the nut on the M3 Stainless Steel 304 Fastener can be positioned at any height, making it easy to clamp aluminum extrusion or heat-pipe coolers onto CPU/GPU modules while also serving as an auxiliary thermal path that lowers hotspot temperatures by 2–3 °C.
Thanks to its fully threaded design, the nut on the M3 Stainless Steel 304 Fastener can be positioned at any height, making it easy to clamp aluminum extrusion or heat-pipe coolers onto CPU/GPU modules while also serving as an auxiliary thermal path that lowers hotspot temperatures by 2–3 °C.
3. Shield cans & EMI grounding
The non-magnetic nature of 304 stainless steel ensures the M3 Stainless Steel 304 Fastener does not interfere with RF signals. Its 40 mm length penetrates shield frames and conductive foam before anchoring to the base plate, creating a continuous ground loop that meets EMC requirements for 5G small cells and automotive T-boxes.
The non-magnetic nature of 304 stainless steel ensures the M3 Stainless Steel 304 Fastener does not interfere with RF signals. Its 40 mm length penetrates shield frames and conductive foam before anchoring to the base plate, creating a continuous ground loop that meets EMC requirements for 5G small cells and automotive T-boxes.
4. Battery compartments & brackets
In drones and handheld terminals, the M3 Stainless Steel 304 Fastener ties the battery clamp plate, silicone dampers, and carbon-fiber frame into a single unit. Its 96-hour salt-spray resistance solves corrosion-induced loosening during outdoor aerial photography or AGV operations.
In drones and handheld terminals, the M3 Stainless Steel 304 Fastener ties the battery clamp plate, silicone dampers, and carbon-fiber frame into a single unit. Its 96-hour salt-spray resistance solves corrosion-induced loosening during outdoor aerial photography or AGV operations.
5. Micro actuators & sensors
The M3 Stainless Steel 304 Fastener secures servo-motor flanges, optical encoders, or LiDAR modules. The fine-pitch M3 thread, combined with dowel pins, guarantees a 0.05 mm repeatability, while the SS304 material suits clean-room protocols.
The M3 Stainless Steel 304 Fastener secures servo-motor flanges, optical encoders, or LiDAR modules. The fine-pitch M3 thread, combined with dowel pins, guarantees a 0.05 mm repeatability, while the SS304 material suits clean-room protocols.
Summary:
The 40 mm “extended” M3 Stainless Steel 304 Fastener is a versatile multi-tasker in the electronics industry. From motherboards to base stations, from heat dissipation to shielding, it replaces multiple parts with a single component, simplifying the BOM and boosting reliability.
The 40 mm “extended” M3 Stainless Steel 304 Fastener is a versatile multi-tasker in the electronics industry. From motherboards to base stations, from heat dissipation to shielding, it replaces multiple parts with a single component, simplifying the BOM and boosting reliability.
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