Huck 360
The engineered nut-and-bolt fastening system from the leader in vibration-resistant fastening, Huck. 
Huck 360 Brochure:

The goal was simple: to design a high-strength bolting system that resists vibration loosening, no matter how extreme the environment. This system should offer quick installation and removal with conventional tools, deliver superior fatigue strength, and hold tight under high spike loads.
The result is the Huck 360 ®, the most advanced nut-and-bolt fastening system you’ll find on the market today. Easy to install, the Huck 360 fastening system is engineered to be virtually maintenance-free and resistant to vibration, even under extreme conditions.
Huck 360 stays tight under severe vibration loading by eliminating the “gap” around the crest of the bolt. When tightened, the Huck 360 fastening system fills this gap, which prevents transverse motion between the 360 nut and bolt, keeping the assembly in place.
Increased Life
Because the Huck 360 vibration-resistant bolt was designed with shallow, low-notch factor bolt threads (the grooves aren’t rolled as deep as a conventional bolt), the effective area of the fastener itself is widened by as much as 20%, increasing tensile and fatigue strength. In fact, the Huck 360 thread delivers 5 times the fatigue life of a standard thread bolt.
Improved Fatigue Performance
Finite Element Analysis (FEA) reveals that the shallow thread form of the Huck 360 results in 27% less axial stress in the root than conventional bolt threads. Stress concentration is the primary contributing factor leading to fatigue failures.
Huck 360 Brochure:

BR-360H-DT16X200
(0)
( 435 Available )
$2.0624
Availability
BR-360NH-R16RX-QS
(0)
( 0 Available )
Call For Price
Not for Sale
BR-360NH-R24RX
(0)
( 0 Available )
Call For Price
Not for Sale
BR-M360NH-R12RX
(0)
( 4130 Available )
$0.7982
Availability
BR-M360H-DT16X070
(0)
( 555 Available )
$2.7038
Availability
BR-360NH-R20RX
(0)
( 580 Available )
$1.5238
Availability
BR-360H-DT20X225
(0)
( 595 Available )
$2.3946
Availability
BR-M360H-DT12X050D1
(0)
( 275 Available )
$1.792
Availability
BR-360H-DT24X400
(0)
( 75 Available )
$5.54
Availability
BR-360H-DT28X400
(0)
( 220 Available )
Discontinued
Not for Sale
BR-360H-DT28X300
(0)
( 255 Available )
$5.8587
Availability
BR-M360H-DT12X050
(0)
( 1365 Available )
$1.3881
Availability
BR-M360H-DT12X070
(0)
( 1190 Available )
$1.6217
Availability
BR-360H-DT24X300
(0)
( 70 Available )
$4.3065
Availability
BR-360H-DT24X500
(0)
( 0 Available )
Call For Price
Not for Sale
BR-360H-DT24X250D1
(0)
( 0 Available )
Call For Price
Not for Sale