Precision Fittings, Inc.
Precision Fittings, Inc.
709 N. Main St., Wellington,
Ohio 44090
Phone: 440-647-4143   Fax: 440-647-5030
Email: sales@PrecisionFittings.com
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  • 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.
7-8-Taper-Hex-Socket-Pressure-Plug_dimensions
7-8-Taper-Pressure-Plug-Flush-Type
Unit of Measure
1 

Item #

Size & Pitch

D
Nominal Diameter, Ref.

J
Hex, Across Flats

T
Socket Depth, Min.

L
Overall Length

AA491763-071 N/A 1/16"-27 N/A 0.307 N/A 0.156 N/A 0.140 N/A 0.250/0.235
AA691763-071 N/A 1/8"-27 N/A 0.401 N/A 0.188 N/A 0.140 N/A 0.250/0.235
AAA91763-071 N/A 1/4"-18 N/A 0.529 N/A 0.250 N/A 0.218 N/A 0.406/0.391
AAE91763-071 N/A 3/8"-18 N/A 0.667 N/A 0.312 N/A 0.250 N/A 0.406/0.391
AAJ91763-071 N/A 1/2"-14 N/A 0.830 N/A 0.375 N/A 0.312 N/A 0.531/0.516
AAS91763-071 N/A 3/4"-14 N/A 1.041 N/A 0.562 N/A 0.312 N/A 0.531/0.516
AB291772-071 N/A 1"-11.5 N/A 1.302 N/A 0.625 N/A 0.360 N/A 0.656/0.641
ABA91772-071 N/A 1 1/4"-11.5 N/A 1.647 N/A 0.750 N/A 0.360 N/A 0.656/0.641
ABJ91772-071 N/A 1 1/2"-11.5 N/A 1.885 N/A 0.750 N/A 0.360 N/A 0.656/0.641
AC291772-071 N/A 2"-11.5 N/A 2.360 N/A 1.000 N/A 0.360 N/A 0.656/0.641
ACJ91772-071 N/A 2 1/2"-8 N/A 2.854 N/A 1.000 N/A 0.500 N/A 1.015/0.995
Unit of Measure
1