BOSS HDW01720 – 3/8″-16 Nylok Insert Nut The Genuine BOSS HDW01720 is a high-strength Nylok Insert Lock Nut (also known as a Nyloc nut) specifically designed for the high-vibration environments of snow and ice removal equipment. It is used extensively across BOSS snowplows and spreaders to ensure critical mounting bolts remain securely fastened during operation. Technical Specifications Part Number: HDW01720 Thread Size: 3/8″-16 (UNC Coarse Thread) Type: Nylon Insert Lock Nut (Prevailing Torque) Finish: Yellow Zinc (YZN) – Plated for superior corrosion resistance against salt, brine, and road chemicals. Wrench Size: 9/16″ Material: Medium-Carbon Steel (equivalent to Grade 8 or Grade C strength levels in most applications). Primary Usage This nut is the official mating hardware for several BOSS assemblies, including: Snow Deflector Kits: Paired with HDW01719 (3/8″-16 x 1-1/2″ bolts) to secure the rubber belting to the moldboard. Shock Absorbers: Used on the mounting tabs for blade shock absorbers on Super-Duty and Heavy-Duty straight blades. Undercarriage Mounts: Frequently found in vehicle-specific fastener kits (e.g., HDW01790) for securing push beam supports and angle brackets to the truck frame. Light Bar Mounts: Secures the hardware for plow light bars and supplemental lighting. Key Benefits Vibration Resistance: The integrated nylon collar creates friction against the bolt threads, preventing the nut from backing off even under the extreme jarring and vibration of plowing. Reusability: While it is best practice to replace lock nuts that have lost their prevailing torque, the nylon insert allows for limited re-installation compared to all-metal “Stover” style lock nuts. Corrosion Protection: The yellow zinc plating is significantly more durable than standard clear zinc or “bright” finishes when exposed to winter road treatments. NOTE: In the event that we do not have a BOSS Snowplow item in stock, it will be ordered from the manufacturer. Due to certain regional restrictions, the items will have to arrive here before being sent to you. Ship times will be longer during the Winter season, as demand increases considerably.
