Fragola 1/4" NPT National Pipe Tapered Thread Blue Anodized Aluminum Allen Plugs

Dimensions for pipe thread are at the bottom of the page

Fragola 1/4" NPT National Pipe Tapered Thread Blue Anodized Aluminum Allen Plugs

Suggested: $1.99 Kartek Price: $1.59

Sold As: 1 Allen Pipe Plug

Part Number: FRA493203

MFG Number: 493203




Fragola 1/4" NPT National Pipe Tapered Thread Blue Anodized Aluminum Allen Plugs
NPT - National Pipe Tapered thread. Always remember that pipe thread fittings are measured INSIDE diameter not outside diameter of the threads. See diagram at bottom of this page.

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Pipe Thread Dimensions:
1/16" NPT is 1/16" I.D. / 0.313 O.D.
1/8" NPT is 1/8" I.D. / 0.405" O.D.
1/4" NPT is 1/4" I.D. / 0.540" O.D.
3/8" NPT is 3/8" I.D. / 0.675" O.D.
1/2" NPT is 1/2" I.D. / 0.840" O.D.
3/4" NPT is 3/4" I.D. / 1.050" O.D.
1" NPT is 1" I.D. / 1.315" O.D.
1-1/4" NPT is 1-1/4" I.D. / 1.660" O.D.
1-1/2" NPT is 1-1/2" I.D. / 1.900" O.D.
2" NPT is 2" I.D. / 2.375" O.D.
How is pipe thread measured?