


5/16"-18 Machine Screw Square Nut - Zinc Plated Grade A ASTM A563
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
5/16"-18 Machine Screw Square Nut - Zinc Plated Grade A ASTM A563Product Details : 5 16" 18 Machine Screw Square Nut Zinc Plated Grade A ASTM A563 Product Type: Machine Screw Square Nut Thread Size: 5 16" 18 Bolt Diameter Size: 5 16" Thread Count (Pitch TPI): 18 Thread Type: Coarse Imperial Thickness: 0. 208 to 0. 225 in Tool to use: 9 16" Material(s): Zinc Plated Material Grade: Grade A Thread Fit: Unified Standard Class 2B Standards and Certifications: ASTM A563 For any information about products, please contact
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4.1 ★★★★★
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Product Reviews
★★★★★ 5
Reliable part
The price of this item was a bit of a shock. A good one though. I gave it to my mechanic, he installed it with no problems. Runs just fine. Would buy again
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Reviewed in the United States on May 5, 2026
★★★★★ 4
Entrega a tiempo
Exelente
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Reviewed in the United States on October 3, 2025
★★★★★ 5
Works and fits as described !
Works perfectly! On time ! Fits perfectly! First time I ordered this item they sent the wrong part completely but this time it’s perfect!
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Reviewed in the United States on March 5, 2025
★★★★★ 5
Excelente
Muy buen producto. Excelente recomiendo 100%
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Reviewed in the United States on November 1, 2025
★★★★★ 5
Perfect fit
Top quality parts and no worries
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Reviewed in the United States on January 15, 2025