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  • Stainless Steel 304 Cast Pipe Fitting, Hex Locknut, Class 150, NPT Female
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Stainless Steel 304 Cast Pipe Fitting, Hex Locknut, Class 150, NPT Female

Available in multiple versions

2 customer reviews

Price: $2.56 - $150.10
Product Specifications
Material Type Stainless Steel
Specification Met ISO 49 ANSI B1.20.1
System of Measurement Inch
Grade 304
Pressure Rating Class 150
Shape Locknut
Style Name Threaded
UNSPSC Code 40170000

The Merit Brass hex locknut is a class 150 stainless steel 304 cast pipe fitting with female N... Read full product description



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1 inches 25 B00N9SYE20
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1" 1 B003GSL0D4
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1-1/2" 1 B003GSL0ES
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1-1/4" 1 B003GSL0DY
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1/2 inches 25 B00N9TUOI2
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1/2" 1 B003GSL0CA
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1/4 inches 25 B00N9T6B5M
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1/4" 1 B003GSL0AM
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1/8" 1 B003GSL0A2
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2-1/2" 1 B003GSL0FW
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3" 1 B003GSL0GQ
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3/4 inches 25 B00N9TTH1C
$67.31
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3/4 inches 25 B00N9TUMV6
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3/4" 1 B003GSL0CK
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3/8" 1 B003GSL0BG
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4" 1 B003GSL0HK
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Product Features

  • Hex locknut locks two threaded fittings into place for stability and reduced vibrations
  • Female National Pipe Taper (NPT) threads for use with male threaded pipes and fittings
  • Made of stainless steel 304 for greater strength than 302 grade steel
  • Low carbon content to ensure greater resistance to corrosion
  • Meets standards ANSI B1.20.1 and ISO 49 for quality assurance

Product Details

  • Shipping Information: View shipping rates and policies
  • Domestic Shipping: Item can be shipped within U.S.
  • International Shipping: This item is not eligible for international shipping. Learn More
  • ASIN: B004XEKQEO
  • Average Customer Review: 5.0 out of 5 stars  See all reviews (2 customer reviews)
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Product Description

The Merit Brass hex locknut is a class 150 stainless steel 304 cast pipe fitting with female National Pipe Taper (NPT) threads for locking two fittings into place for stability and reduced vibrations. The locknut has NPT threads for creating tighter seals than straight threads. The hexagonal shape provides increased leverage for use with a wrench during installation and disassembly. Made of stainless steel 304, the lower carbon content of this locknut ensures higher corrosion resistance than 302 grade steel. This class 150 fitting meets steel 304 strength standards and specifications ISO 49 and ANSI 1.20.1 for quality assurance. Class is a standard relating to tolerance, construction, dimension, and wall thickness, but it is not a direct measurement of maximum working pressure.

Pipe fittings are components used for connecting, terminating, controlling flow, and changing the direction of piping in many different industries. When purchasing pipe fittings, consider the application, as this will affect material type, shape, size and required durability. Fittings are available threaded or unthreaded, in many shapes, styles, sizes, and schedules (pipe wall thickness).

Merit Brass manufactures pipe nipples following ISO 9001 standards for quality assurance. Family-owned since 1937, the company is based in Cleveland, OH. Merit Brass distributes pipe fittings to the United States and Canada.


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Most Helpful Customer Reviews

Size: 1"Number of Items: 1 Verified Purchase
Fit perfectly over 1" NPS water heater element threads. Made a tight seal for my electric HLT in a 5 gal beverage cooler.
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By Jay on December 29, 2014
Size: 3/8"Number of Items: 1 Verified Purchase
fits great, hard to find!
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