Multi Piece Fastener has announced that samples are now available for the ForeverLok design, which has been vigorously tested to ensure its strength and performance. These samples are in the intended design configuration, offering a recessed nut configuration (instead of the capped version used in testing). All other aspects are identical to the tested version.
The ForeverLok design has proven to be the top anti-vibration fastener currently on the market. Through an independent laboratory, the design prototype was subject to the industry’s two most rigorous anti-vibration tests: the NASM 1312-7 and DIN 25201-4.
In the NASM 1312-7 test, the ForeverLok surpassed the military standard 14 times. On the break point torque test, this fastener design came in at 99% higher than the recommended torque rating of the tested bolt. In fact, the ForeverLoK is estimated to have a 50% higher recommended torque rating than recommended torque rating for the bolt used in this testing.
The specifications for the nut, bolt, and retainer are as follows:
1. Grade 8 steel bolt
2. Bolt length — 1″ (25.4mm)
3. Bolt thread — 1/2-13
4. Stainless steel nut (similar strength properties as steel grade 8)
5. Nut length — 75″ (19mm)
6. Locking screw thread — 1/4-20
7. Minimum clamp height — .5″ (12.7mm)
8. Maximum clamp height — .65″ (16.5mm)
9. Clamp adjustment range — 0.15″ (3.8mm)