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Technical Information
Technical InformationThread Identification Guide3727 Westgate Rd. Grand Island, NE 68803 Phone: 800-323-5749 Fax: 308-382-0253 NPSMNPTF, BSPT and BSPP measure 1/4 larger than their actual size. For example, a 1/4 NPTF, BSPT or BSPP will actually measure 1/2 on the O. D. of the threads. JIC, SAE O-ring & Flat Face threads measure as listed below. The first number listed is the size of thread, the second number is the threads per Sizing ChartThread Sizing KitAllows the user to properly identify threads of all hydraulic types. This handy kit includes a fractional thread pitch gauge, a metric thread pitch gauge, inside & outside caliper (inches and millimeters), a seat angle gauge (24 degree/30 degree/37 degree/45 degree), 27-page fluid ports & connections identification guid. A carrying case is standard for easy and convenient ( pipe )JIC (37 )SAE (O-Ring)Face Seal (Flat Face)BSPP (Parallel)BSPT (Tapered)-21/8 - 275/16 - 245/16 - 24-1/8 - 281/8 - 28-3-3/8 - 243/8 - 24--- -41/4 - 187/16 - 207/16 - 209/16 - 181/4 - 191/4 - 19-5-1/2 - 201/2 - 20----63/8 - 189/16 - 189/16 - 1811/16 - 163/8 - 193/8 -19-81/2 - 143/4 - 163/4 - 1613/16 - 161/2 - 141/2 - 14-10-7/8 - 147/8 - 141 - 14---123/4 - 141-1/16 - 121-1/16 - 121 3/16 - 123/4 - 143/4 - 14-14-1-3/16 - 121-3/16 - 121 5/16 - 12---161 - 11-1/21-5/16 - 121-5/16 - 121 7/16 - 121 - 111 - 11-201-1/4 - 11-1/21-5/8 - 121-5/8 - 121 11/16 - 121-1/4 - 111-1/4 - 11-241-1/2 - 11-1/21-7/8 - 12
Commonly referred to as “female pipe swivels,” this connection is still widely used in fluid power systems. The NPSM thread design differs from the NPTF pipe thread design which seals on the threads themselves. The NPSM female pipe swivel seals on a 30° seat (flare) and is visible down inside of the swivel nut. This
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