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Shoulder Screw 1/4
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Shoulder Screw 1/4"-20 x 5/16" x 5/16" - Stainless Steel 18-8

Marsoni M251S
Sale price$127.37
Pay 4 payments of $31.84 a month.Shop Pay
Get it in 3 business days with 1 day shipping. Friday, May 29
Shoulder Screw 1/4"-20 x 5/16" x 5/16" - Stainless Steel 18-8Product Details : Shoulder Screw 1 4" 20 x 5 16" x 5 16" Stainless Steel 18 8 Product Type: Shoulder Screw Shoulder Diameter: 5 16" Thread Size: 1 4" 20 Bolt Diameter Size: 1 4" Thread Count (Pitch TPI): 20 Shoulder Length: 5 16" Thread Length: 7 16" Thread Type: Coarse Imperial Head Type: Hexagon Socket Head Diameter: 7 16" Head Height: 7 32" Drive Size: 5 32" Material(s): Stainless Steel 18 8 Tensile Strength: 70,000 psi Thread Direction: Right Hand
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
4.3 ★★★★★
Based on 2098 reviews
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Product Reviews
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Verified Purchase
JayJay
West Palm Beach, US
★★★★★ 5
Works for us!
We use this regularly in my car. Seems to help keep sensors clear. My engine light comes on if I don’t add. We add it to gas tank. My husband says it’s because of poor quality (dirty) gas from other countries.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
J
Verified Purchase
Jeff Pesos
Louisville, US
★★★★★ 4
Works like a supplement
If you use it and see a difference, you will blame it on this cleaner, if not, you will say the product does not work. Exactly like your weight loss supplements! Who knows what this stuff does, but it may do something. Or maybe it does not.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 7, 2026
M
Verified Purchase
Michael Sliwinski
New York, US
★★★★★ 5
Used to clean an O2 sensor
Seems to have resolved an issue with a wavering idle for my 89 Mercedes 300e with 468,000 miles.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 27, 2026
M
Verified Purchase
Marvin Burton
Belleville, US
★★★★★ 3
Nothing
Didn’t work for me
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
M
Verified Purchase
mechanic
West Palm Beach, US
★★★★★ 1
It doesn’t work
This don’t work at all. I do not recommend. I use all four containers, and the light is still on.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026

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