Production Range of Threaded Square Head Plug

ProductThreaded Square Head Plug
ConnectionMale / Female (NPT, BSP, BSPT)
Size 1/8″ NPS TO 4″ NPS
Pressure Rating2000LB, 3000LB, 6000LB
Process methodForged, CNC Machined
Standards:ASME/ANSI B16.11
CertificationEN 10204 3.1
  • Forged pipe fittings are available in both socket weld and threaded ends.

Threaded Square Head Plug Dimensions – ASME B16.11

Threaded Square Head Plug Drawing

Threaded Square Head Plug Drawing

DNNom.LengthSquare Head PlugRound Head PlugHex.Head Plug&Bushing
Pipe(Min)Height ofWidth FlatNominalLengthWidth FlatHex.Height (Min.
SizeASquare(Min.)Diameter(Min.)(Nom.)
  (Min.)Cof Head (Nom)EFBushingPlug
  B D  GH
61/8″106710356
81/4″1161014411636
103/8″1381118411848
151/2″14101421442258
203/4″161116274427610
251″191321335136610
321-1/4″211424435146714
401-1/2″211628485150816
502″221832606465918
652-1/2″2719367370751019
803″2821418970901021
1004″322565114761151325
  • Dimensions in Millimeters
  • Cautionary note regarding Hex Bushing – Hex head bushing if one-size reduction should not be used in services where they might be subject to harmful loads and forces other than internal pressure.

Threaded Square Head Plug Manufacturers, Suppliers, Stockist – ANSI B16.11, ASTM A105, ASTM A182 F304, F316, F304L, F316L, and A182 F5, F9, F11, F22, F91

  • Size: from 1/4″ to 4″ (6mm-100mm), Pressure: 2000LBS, 3000LBS, 6000LBS, 9000LBS
  • Dimensions of Threaded Square Head Plug as per ASME B16.11

Metallica is a well known manufacturer and supplier of threaded square head plug for the clients from oil and gas, petrochemicals, railway, construction and other industries. We manufacture different size of threaded square head plug by close die forging method. Our main products include various types of threaded pipe fittings in size range of 1/4″ to 4″ (6mm-100mm), with pressure rating of 2000LBS, 3000LBS, 6000LBS, and 9000LBS. The most common and materials include ASTM A105, ASTM A182 F304, F316, F304L, F316L, and A182 F5/F9/F11/F22/F91. In nickel alloys we manufacturing threaded pipe fittings in various grades such as Alloy 200, 201, 400, K500, 600, 625, 800H/HT, 825, X-750, C276, Hastelloy B & C22.

Forged Socket Weld & Threaded Pipe Fittings Manufacturing Standards

  • ASTM A182 – ASME SA182 – Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings
  • ASME B16.9 – Factory-Made Wrought Buttwelding Fittings
  • ASME B16.11 – Socket Welding and Threaded Forged Fittings
  • MSS SP-43 – Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications
  • MSS SP-95 – Swage(d) Nipples and Bull Plugs
  • BS3799 – Specification for Steel pipe fittings, screwed and Socket-welding for the petroleum industry

Threaded pipe fittings are generally used for small size pipes and piping systems (generally below 4 inches in diameter for Class 3000, and below 2 inches for fittings in class 6000 and 9000). Threaded pipe fittings are manufactured by forging, followed by heat treatment and machining solid steel as per ASME B16.11 and other dimensional standards. For bigger size piping systems buttweld pipe fittings produced as per ASME B16.9 are used.

Threaded Square Head Plug Materials & Grades

  • Carbon Steel: ASTM/ASME A/SA 105, ASTM/ASME A 350 LF2, LF3
  • Alloy Steel: ASTM/ASME A/SA 182 F1, F5, F9, F11, F12, F22, F91
  • Stainless Steel: ASTM A 182 F304, F304L, F304H, F316, F316L, F316Ti, F310, F321, F321H, F317, F347, F347H, F904L
  • Duplex & Super Duplex Steel: ASTM A182 F44, F45, F51, F53, F55, F60
  • Copper Nickel Alloys: UNS C 70600 (Cu-Ni 90/10), C 71500 (Cu-Ni 70/30), UNS C10100, 10200, 10300, 10800, 12000, 12200
  • Nickel Alloys: ASTM SB564, SB160, SB472, SB162 Nickel 200 (UNS N02200), Nickel 201 (UNS N02201), Monel 400 (UNS N04400), Monel 500 (UNS N05500), Inconel 800 (UNS N08800), Inconel 825 (UNS N08825), Inconel 600 (UNS N06600), Inconel 625 (UNS N06625), Inconel 601 (UNS N06601), Hastelloy C 276 (UNS N10276), Alloy 20 (UNS N08020)