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3/8-in x 3/8-in Threaded Male Adapter Nipple Fitting

Ratings & Reviews for ProLine Series 3/8-in x 3/8-in Threaded Male Adapter Nipple Fitting

4.7
702
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Review
  4.7 out of 5
703 Reviews


95% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The reviews present mixed opinions about the product's quality and performance. While some customers found it to be a durable and reliable fitting, others reported issues such as premature failure, leaks, and cracking. The product appears to have inconsistent quality, with some customers experiencing problems when using it in pressurized systems. Customers recommend carefully inspecting the product and considering alternative options, especially for critical plumbing applications.

Customer review summary generated by AI, including incentivized reviews.
703 Customer Reviews

Needs to be threaded all the way

 Would Recommend

To short

May 8, 2026
From 1_SLASH_2-in x 1_SLASH_2-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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just as described, worked perfect

 Would Recommend

perfect fit, worked like a charm

May 7, 2026
From 1_SLASH_4-in x 1_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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As described

 Would Recommend

Fit as described and the brass material should protect against rusting in the future. Used when replacing a well pressure switch and it worked great!

May 5, 2026
From 1_SLASH_4-in x 1_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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B2589

 Would Recommend

Gets the gauge out of the way of the pressure switch

May 5, 2026
From 1_SLASH_4-in x 1_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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Great part

Worked great

May 3, 2026
From 1_SLASH_2-in x 1_SLASH_2-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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Outdoor Rinnai water heater

 Would Recommend

As advertised-- Used to finish a Rinnai outdoor tankless water heater

April 26, 2026
From 3_SLASH_4-in x 3_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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great

 Would Recommend

perfect

April 26, 2026
From 1_SLASH_2-in x 1_SLASH_2-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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good product

 Would Recommend

just what i needed

April 24, 2026
From 3_SLASH_4-in x 3_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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Good fit

 Would Recommend

Item as described

April 20, 2026
From 3_SLASH_4-in x 3_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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Would buy again

 Would Recommend

Worked fine

April 19, 2026
From 1_SLASH_4-in x 1_SLASH_4-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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Product

 Would Recommend

Great product

April 18, 2026
From 1_SLASH_2-in x 1_SLASH_2-in Threaded Male Adapter Nipple Fitting Verified Purchaser
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