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
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Part Number: HDW01720
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Thread Size: 3/8″-16 (UNC Coarse Thread)
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Type: Nylon Insert Lock Nut (Prevailing Torque)
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Finish: Yellow Zinc (YZN) – Plated for superior corrosion resistance against salt, brine, and road chemicals.
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Wrench Size: 9/16″
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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:
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Snow Deflector Kits: Paired with HDW01719 (3/8″-16 x 1-1/2″ bolts) to secure the rubber belting to the moldboard.
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Shock Absorbers: Used on the mounting tabs for blade shock absorbers on Super-Duty and Heavy-Duty straight blades.
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Undercarriage Mounts: Frequently found in vehicle-specific fastener kits (e.g., HDW01790) for securing push beam supports and angle brackets to the truck frame.
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Light Bar Mounts: Secures the hardware for plow light bars and supplemental lighting.
Key Benefits
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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.
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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.
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Corrosion Protection: The yellow zinc plating is significantly more durable than standard clear zinc or “bright” finishes when exposed to winter road treatments.
