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+86 13143444311
Email:sst@szsst88.com
Fax:+0086-755-27322278
Address:Building 9, First Industrial Zone, Tantou Industrial City, Songgang Street, Baoan District, Shenzhen 518105, Guangdong, China
Nylon patch vs liquid threadlocker is a choice between different locking mechanisms and assembly processes. A mechanical nylon patch creates resistance as it is compressed in the mating thread. An anaerobic liquid threadlocker develops its cured properties under the specified conditions after as...
2026.10.31
Micro screw tightening torque should be released as a validated process window, not selected by diameter alone. The lower boundary must achieve the required seating or clamp condition; the upper boundary must avoid the relevant damage modes. Tool error, friction variation and part variation must...
2026.10.30
A custom security screw drive should discourage unwanted access while allowing the planned installation and maintenance process. Recess shape is only one part of that decision. Driver reach, centre-pin clearance, recess depth, head wall thickness and tool availability determine whether the autho...
2026.10.29
Countersunk screw seat depth depends on the countersink diameter, the through-hole diameter and the included angle. Choosing a flush head without checking that geometry can remove too much material from a thin panel. The design review should connect screw head dimensions to the actual seat, rema...
2026.10.28
Titanium screw galling can cause a rising installation torque without producing the intended clamp load. Adhesive wear at sliding thread contacts can progress to seizure. The investigation must consider both mating surfaces, their condition and the installation process—not just the screw alloy. ...
2026.10.27
Hollow custom screws need more than a bore diameter. The critical checks are the remaining load-carrying section, the minimum local wall and the bore’s relationship to the exterior geometry. A hole can be the correct size but still leave one side too thin. Start with the passage’s function, then...
2026.10.26
Vented screw design starts with a continuous path from a trapped cavity to the evacuated space. A drilled hole helps only when it communicates with the actual pocket and remains open after installation. Bore diameter, outlet position, machining residue and the surrounding assembly all matter. A ...
2026.10.25
A captive panel screw stays with its panel during service; a SEMS screw keeps one or more washers assembled to the screw. These are different functions. A retained washer does not, by itself, prevent the complete fastener from falling out of an open cover. Select the architecture by the maintena...
2026.10.24
Specialty materials for custom screws should be selected around the joint’s failure risk, not the alloy name alone. A286, 321 stainless steel and titanium address different combinations of temperature, corrosion, strength and weight. The material condition, head and thread geometry, manufacturin...
2026.10.23
Long screws can bind in a multi-layer assembly even when each individual part appears acceptable. The cause may be offset clearance holes, a bowed shank, an unsuitable grip length, insufficient blind-hole clearance or a damaged thread. The fastest way to investigate is to identify where resistan...
2026.10.22
Custom low-profile screws solve a clearance problem only when the head, drive and joint are designed together. Reducing head height can leave less room for tool engagement and load-bearing material. The right specification balances the available space with the clamp load the assembly needs and t...
2026.10.21
ENGINEERING GUIDE / FINISHED-PART INSPECTION Thread gauge failure after plating often starts with an allowance that does not cover the deposited coating, uneven buildup, or a mismatch between the gauge and the specified finished thread. For a custom stepped screw, also check the smooth locating ...
2026.10.21