5/16 X 18 Tri-Groove Tamper Proof Security Nuts

 

New Old Stock

Made in the USA

Non magnetic

Material:  Black Anodized Stainless Steel

Quantity                                5

Thread Size                         5/16 X 18

Brand                                    Hillman Group

Socket Size                          LPF-20 (LPF20) or just plain “20”

 

Tri Groove security nuts feature a tapered diameter, making the nuts resistant to gripping devices. Security nuts are installed using a special Tri Groove socket, which grips the indentations along the outside of the fastener to turn the nut along a thread. Tri Groove nuts are also referred to as T Groove, Trident Drive and Coned Trident Drive Nuts.

 

When ordering sockets for these nuts, you must specify LPF-20 aka LPF20 aka size 20 .

 

A 15% restocking fee or more will be charged for returns
Depending on the condition when we receive.

 

PHOTOGRAPHS

 Please use the accompanying pictures to gauge condition. Photographs are part of the item description.

I try my best to take the best photographs but in the end I have an antique digital camera and pretty much no understanding of proper lighting, backgrounds, etc. I do my best to take good photographs but sometimes my best is barely adequate and for this I apologize.