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Shoulder Screw 1/2"-13 x 5/8" x 1/2" - Stainless Steel 18-8

Marsoni M251S
Sale price$37.39
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Shoulder Screw 1/2"-13 x 5/8" x 1/2" - Stainless Steel 18-8Product Details : Shoulder Screw 1 2" 13 x 5 8" x 1 2" Stainless Steel 18 8 Product Type: Shoulder Screw Shoulder Diameter: 5 8" Thread Size: 1 2" 13 Bolt Diameter Size: 1 2" Thread Count (Pitch TPI): 13 Shoulder Length: 1 2" Thread Length: 3 4" Thread Type: Coarse Imperial Head Type: Hexagon Socket Head Diameter: 7 8" Head Height: 3 8" Drive Size: 5 16" Material(s): Stainless Steel 18 8 Tensile Strength: 70,000 psi Thread Direction: Right Hand Thread
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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.
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4cams
Chelsea, US
★★★★★ 5
OEM recommended.
Style: Mineral, Pattern Name: Quart - 1 Pack
It is the OEM recommended oil for my 2017 9.9 outboard. Arrived quickly and in a sealed plastic bag. No leaks. This is 32 oz and the motor only calls for 27 oz so enough for topping up in needed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 23, 2026
O
Verified Purchase
Ontik Hoque
Port Orchard, US
★★★★★ 5
Great for Mercury 4-stroke outboard
Style: Mineral, Pattern Name: Gallon - 1 Pack
The price was too good to pass; I stocked up on 3 years' worth of oil. QuikSilver is OEM Mercury oil, and this stuff has long shelf life if you can store it in stable indoor temperature/away from temperature extremes. Great buy overall, highly recommended.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 20, 2025
J
Verified Purchase
Joe H.
Charlottesville, US
★★★★★ 5
Looks well made
Looks well made. Rubber seems pliable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
D
Verified Purchase
Dct
Whiting, US
★★★★★ 5
It’s fixed
That awful boat… don’t buy boats unless you like to spend money OBVIOUSLY! This part fixed the boat!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 18, 2026
D
Verified Purchase
Don R
Charlottesville, US
★★★★★ 5
Good
Good quality
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Reviewed in the United States on April 28, 2026

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