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Briggs & Stratton snowblower shear bolt kit. 1/4-20 x 1 3/4". Shear bolts are designed to break in half if the auger strikes a hard object to prevent damage to the transmission and engine. If the shear bolt is broken, the auger won’t be able to turn.

Shear pin

Shear bolt and nut kit

Shear bolt 1/4-20 x 1 3/4"

Briggs & Stratton snowblower shear pin set. Shear bolts are designed to break in half if the auger strikes a hard object to prevent damage to the transmission and engine. If the shear bolt is broken, the auger won’t be able to turn.

Shear pin kit-wb snow

Shear bolt and nut kit

Kit shear pin

Shear bolt assy

Kit,shear bolt.31-18x
The shear pin (or shear bolt) is the most common snowblower consumable — it's designed to break when the auger hits something solid, protecting the gearbox and drive system from damage. Murray snowblowers use shear pins in the auger drive shaft, and they'll snap when you hit rocks, ice chunks, or buried debris. Keep a 5-pack in your equipment bag so you're never stranded mid-storm.
When a shear pin breaks, you'll notice the auger stops turning immediately even though the engine keeps running. It's a quick fix — usually under 10 minutes with basic tools — and a new pin costs just a few dollars. Murray snowblower shear pin parts are a seasonal required for any owner.
Yes — shear pins are engineered to break. They're a safety device that protects the auger gearbox, transmission, and engine from catastrophic damage when you hit a rock, ice chunk, or other obstacle. When the auger hits something immovable, the pin snaps instead of your gearbox failing. It's a $3 to $5 part that saves your $200+ transmission. Always buy a 5-pack and keep spares in the snowblower.
Shear pin diameter and length vary by auger shaft design — some Murray models use 5/16" × 1.5", others use different dimensions. Look up your specific Murray model number (found on the frame or engine) in our parts finder, and we'll show you the exact shear pin specifications. Don't guess — a wrong-sized pin won't break when it should, or will break too easily.
No. Regular bolts are too strong and won't break at the right load. Using a standard bolt defeats the purpose of the safety pin — you risk serious gearbox or transmission damage. Always use OEM Murray shear pins rated for your auger shaft. They cost next to nothing and are one of the simplest preventive maintenance investments you can make.
Shear pins are a consumable — they break as designed when needed. Keep spares on hand and replace them whenever one snaps. Before each winter season, inspect the pin for cracks or corrosion and replace if questionable. If you're hitting obstacles frequently, have extra pins with you when operating.


Keep your Murray snowblower running smoothly by ordering genuine shear pin parts from Repair Clinic. Our easy-to-use model or part number lookup ensures you find the exact fit for your machine, optimizing performance and reliability. We guarantee your satisfaction with No-Hassle 365-Day Returns and our Price Match Guarantee, so you can shop confidently. Plus, enjoy the convenience of same-day shipping when you order by 9:00 PM ET. Find more snowblower essentials with our broad range of Murray snowblower parts or find Murray Snowblower Parts for additional options. Need installation guidance? Visit our comprehensive Snowblower Repair Help section.
On Murray snowblowers, look for the model number on the frame behind the engine, under the handle panel, or on the auger housing. Check for a tag or stamped label and copy the full number, including letters, periods, and dashes. Type it into the model number lookup to narrow the catalog to parts made for your complete snowblower, not just one part. Using the exact model helps account for differences between machines that look similar but use different parts. It is the quickest way to be sure the part fits before you order.

Repair Clinic's online repair library is built to support Murray Snowblower owners and technicians through every stage of the fix. Symptom-based articles narrow the likely cause, part testing videos verify the failing component, and step-by-step repair guides cover the installation with photos and video. Use the model number lookup to confirm the exact OEM part, and wiring diagrams back you up on the more technical steps.

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