What’s the thread pitch on the 1/8” npt female?

the thread pitch on the 1/8 ”npt is 0.941mm (converted to 0.037 inches).

Will the 3/8 end connect to a standard 3/8 propane gas grill line?

If the fittings are NPT the answer is "yes". If they are POL the answer is "no".

Is the 1/8 female fine or coarse thread?

It’s NPT or national pipe thread. NPT is not v Comparable with UNF or UNC. It is used for mating to pities.

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Description

🔧 Upgrade your connections with KOOTANS – where precision meets power!

VALUE PACK CONVENIENCE - Includes 4 heavy-duty reducers so you’re always ready to upgrade or repair on the spot.
EFFORTLESS INSTALLATION - Hex bushing design allows quick tightening and loosening without the hassle of sealants in most cases.
PRECISION ENGINEERED THREADS - Deep, accurate NPT taper threads ensure leak-proof, secure connections every time.
PREMIUM FORGED BRASS DURABILITY - Corrosion-resistant, high-temperature ductile brass built to last in demanding environments.
VERSATILE INDUSTRIAL COMPATIBILITY - Perfect for plumbing, compressed air, hydraulic, and gas applications—adapt with confidence.

KOOTANS 4-piece brass reducer set converts 1/4" NPT male threads to 1/8" NPT female threads with heavy-duty forged brass construction. Rated for 1200 psi and temperatures from -65°F to 250°F, these hex bushings deliver corrosion resistance, durability, and reliable sealing for plumbing, gas, hydraulic, and compressed air systems.

Specifications

Size	1/4 x 1/8 NPT (O.D x I.D: 1/2'' x 3/8'')
Material	Brass
Brand	KOOTANS
Colour	NPT Size is the nominal pipe code, it does not represent the actual diameter. Please check the size chart before buying.
Item dimensions L x W x H	14.7 x 10.5 x 4.3 Centimeters
Connector Type	Reducer
Thread Size	1/4 NPT male thread to 1/8 NPT female thread
Exterior Finish	Brass
Thread Type	NPT
Item Weight	45 g
Number of Pieces	4
Manufacturer	KOOTANS
UPC	796862232221
Country of Origin	USA
Item model number	CA-3220BA-4-new
Product Dimensions	14.7 x 10.5 x 4.32 cm; 45.36 g
ASIN	B0823JQL2W

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