Precision Fittings, Inc. - Hex Socket Pressure Plug, 7/8 Taper, Flush Seal

Threads - Threads have NPTF thread form, but conform to Socket Screw Products Bureau specification SS-102 to incorporate the 7/8” per foot taper. These plugs will seat with the socket end approximately flush to the surface of the tapped hole.
Material – Alloy steel. Through Hardened to Rockwell "C" 36-43. Brass and 316, 304/302 Stainless Steels also in stock.
Pitch diameter - The pitch dia. at the socket face is the diametral equivalent of one-half thread larger than the pitch dia. (e1) of a standard pipe thread tapered tapped hole (0.750 diametral taper per 12") this provides the basic point of thread interference to produce a high pressure sealed joint.
Identification grooves - Six equally spaced identification grooves (3 permitted on 1/16-27 due to space limitations) to be located equidistant between corners of hexagon socket and edge of chamfer. No particular alignment with Hexagon is required.

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Unit of Measure

Items	AA491763-071	AA691763-071	AAA91763-071	AAE91763-071	AAJ91763-071
Taper per Foot	N/A 7/8 in
Thread Type	N/A Flush Type (PTF-7/8)
Size & Pitch	N/A 1/16"-27	N/A 1/8"-27	N/A 1/4"-18	N/A 3/8"-18	N/A 1/2"-14
D Nominal Diameter, Ref.	N/A 0.307	N/A 0.401	N/A 0.529	N/A 0.667	N/A 0.830
J Hex, Across Flats	N/A 0.156	N/A 0.188	N/A 0.250	N/A 0.312	N/A 0.375
T Socket Depth, Min.	N/A 0.140	N/A 0.140	N/A 0.218	N/A 0.250	N/A 0.312
G Min.	N/A 0.052	N/A 0.049	N/A 0.045	N/A 0.040	N/A 0.067
L Overall Length	N/A 0.250/0.235	N/A 0.250/0.235	N/A 0.406/0.391	N/A 0.406/0.391	N/A 0.531/0.516
Nom. P. D. at SOC. Face	N/A 0.283	N/A 0.375	N/A 0.494	N/A 0.629	N/A 0.991
Disclaimer	N/A Parts listed are usually in stock, but please inquire about a specific style or type of plug. While we stock most parts, some are no longer standard stock parts.