Forged threaded fittings (ASME B16.11), Class 2000 / 3000 / 6000: elbows, tees, caps — centre-to-end, band OD, thread length — dimension sheet Source: Xem Studio, https://xemstudio.com/objects/forged-threaded-fittings-b16-11/ (sheet CC BY 4.0) Basis: Wermac's ASME B16.11 threaded tables (mm: elbows, tees, caps), cross-checked against the maker's inch catalog (Smith-Cooper 42-series); numbers and Xem-drawn envelopes Catalog version: 2026-10-20 Sizes: see table below - B16.11 threaded fittings (NPT per ASME B1.20.1): B is the minimum length of perfect thread, J the minimum length of useful thread (B plus threads with fully formed roots and flat crests), D the outside diameter of the band, G the minimum wall and A the centre-to-end of a 90° elbow or tee; C is the 45° centre-to-end. Wermac's page itself defines only B and J and orders the other columns by header position, so the letter mapping is a reading; it is confirmed by the maker: Smith-Cooper's elbow A and B (inches) equal Wermac's A and D for Class 3000 NPS 1/2 to 4 and Class 6000 NPS 1/2 to 3 within 1.5 mm (NPS 2 Class 3000: A 64 / D 84 mm vs 2.50 / 3.31 in = 63.5 / 84.1). The 'check' column shows the inch comparison. - Dropped: Wermac's Class 6000 NPS 4 elbow row (D 152, A 114, C 79) repeats the Class 3000 NPS 4 row exactly, while the Class 6000 rows from NPS 1/2 to 2-1/2 equal the next size's Class 3000 D, A and C (and NPS 3 is 146 / 106 / 79); the value is not used. The maker's 6000 series stops at NPS 3 for elbows. - Disagreement shown, not resolved: Class 3000 NPS 3/4 cap OD is printed '35.' by Wermac and 1.33 in (33.8 mm) by Smith-Cooper (all other cap ODs agree within 1 mm), so no 3/4 cap file is drawn. Tees use the same centre-to-end A as the 90° elbow (Wermac's tee table repeats the elbow columns). - Class 2000 is Wermac only (no maker cross-check read) and is table-only. Couplings: Wermac's threaded-coupling page was not available; Smith-Cooper's A and B (inches) are shown as printed, but the catalog text does not define which is the length and which the OD, so no coupling file is drawn. - Files (Xem-drawn envelopes): cylinders of the published band OD D meeting at a sphere of the same radius at the centre, out to the published centre-to-end; caps are a cylinder of OD D and length A with a plain blind bore of depth J. Threads are plain bores: the bore is the NPT tap-drill size (Ø18.3 for 1/2, Ø23.4 for 3/4, Ø29.4 for 1; from ANSI/ASME B1.20.1 as listed on npt-bsp-thread-envelopes). Taper, thread form and the true outer shape (the real band and hexagon-like body of a forged elbow) are not drawn; those are not published as numbers in the sources read. Sizes are 1/2 to 1 only because the tap-drill table on this site stops at NPS 1. - Threaded fittings take male NPT pipe directly (pipe thread sealant, no socket): see npt-bsp-thread-envelopes for the male side. part class NPS elbow/tee: B min perfect thread | cap: length A elbow/tee: J useful thread | cap: OD D (mm) elbow/tee: D band OD | cap: min wall G elbow/tee: G min wall | cap: B thread elbow/tee: A 90° | cap: J thread elbow/tee: C 45° | cap: — check vs maker (in): elbow/tee A / OD; cap A / OD elbow / tee 2000 1/2 10.9 13.6 33 3.18 28 22 — elbow / tee 2000 3/4 12.7 13.9 38 3.18 33 25 — elbow / tee 2000 1 14.7 17.3 46 3.68 38 28 — elbow / tee 2000 1-1/4 17 18 56 3.89 44 33 — elbow / tee 2000 1-1/2 17.8 18.4 62 4.01 51 35 — elbow / tee 2000 2 19 19.2 75 4.27 60 43 — elbow / tee 2000 2-1/2 23.6 28.9 92 5.61 76 52 — elbow / tee 2000 3 25.9 30.5 109 5.99 86 64 — elbow / tee 2000 4 27.7 33 146 6.55 106 79 — elbow / tee 3000 1/2 10.9 13.6 38 4.09 33 25 1.30 / 1.50 vs 1.31 / 1.50 elbow / tee 3000 3/4 12.7 13.9 46 4.32 38 28 1.50 / 1.81 vs 1.50 / 1.81 elbow / tee 3000 1 14.7 17.3 56 4.98 44 33 1.73 / 2.20 vs 1.75 / 2.19 elbow / tee 3000 1-1/4 17 18 62 5.28 51 35 2.01 / 2.44 vs 2.00 / 2.44 elbow / tee 3000 1-1/2 17.8 18.4 75 5.56 60 43 2.36 / 2.95 vs 2.38 / 2.97 elbow / tee 3000 2 19 19.2 84 7.14 64 44 2.52 / 3.31 vs 2.50 / 3.31 elbow / tee 3000 2-1/2 23.6 28.9 102 7.65 83 52 3.27 / 4.02 vs 3.25 / 4.00 elbow / tee 3000 3 25.9 30.5 121 8.84 95 64 3.74 / 4.76 vs 3.75 / 4.75 elbow / tee 3000 4 27.7 33 152 11.18 114 79 4.49 / 5.98 vs 4.50 / 6.00 elbow / tee 6000 1/2 10.9 13.6 46 8.15 38 28 1.50 / 1.81 vs 1.50 / 1.81 elbow / tee 6000 3/4 12.7 13.9 56 8.53 44 33 1.73 / 2.20 vs 1.75 / 2.19 elbow / tee 6000 1 14.7 17.3 62 9.93 51 35 2.01 / 2.44 vs 2.00 / 2.44 elbow / tee 6000 1-1/4 17 18 75 10.59 60 43 2.36 / 2.95 vs 2.38 / 2.97 elbow / tee 6000 1-1/2 17.8 18.4 84 11.07 64 44 2.52 / 3.31 vs 2.50 / 3.31 elbow / tee 6000 2 19 19.2 102 12.09 83 52 3.27 / 4.02 vs 3.25 / 4.00 elbow / tee 6000 2-1/2 23.6 28.9 121 15.29 95 64 — elbow / tee 6000 3 25.9 30.5 146 16.64 106 79 4.17 / 5.75 vs 4.13 / 5.69 cap 3000 1/2 32 28 6.4 10.9 13.6 — 1.26 / 1.10 vs 1.25 / 1.12 cap 3000 3/4 37 35 (printed '35.') vs maker 1.33 in = 33.8 6.4 12.7 13.9 — 1.46 / 1.38 vs 1.44 / 1.33 cap 3000 1 41 44 9.7 14.7 17.3 — 1.61 / 1.73 vs 1.62 / 1.75 cap 3000 1-1/4 44 57 9.7 17 18 — 1.73 / 2.24 vs 1.75 / 2.25 cap 3000 1-1/2 44 64 11.2 17.8 18.4 — 1.73 / 2.52 vs 1.75 / 2.50 cap 3000 2 48 76 12.7 19 19.2 — 1.89 / 2.99 vs 1.88 / 3.00 cap 3000 2-1/2 60 92 15.7 23.6 28.9 — 2.36 / 3.62 vs 2.38 / 3.62 cap 3000 3 65 108 19 25.9 30.5 — 2.56 / 4.25 vs 2.56 / 4.25 cap 3000 4 68 140 22.4 27.7 33 — 2.68 / 5.51 vs 2.69 / 5.50 cap 6000 1/2 33 38 7.9 10.9 13.6 — 1.30 / 1.50 vs 1.31 / 1.50 cap 6000 3/4 38 44 7.9 12.7 13.9 — 1.50 / 1.73 vs 1.50 / 1.75 cap 6000 1 43 57 11.2 14.7 17.3 — 1.69 / 2.24 vs 1.69 / 2.25 cap 6000 1-1/4 46 64 11.2 17 18 — 1.81 / 2.52 vs 1.81 / 2.50 cap 6000 1-1/2 48 76 12.7 17.8 18.4 — 1.89 / 2.99 vs 1.88 / 3.00 cap 6000 2 51 92 15.7 19 19.2 — 2.01 / 3.62 vs 2.00 / 3.62 cap 6000 2-1/2 64 108 19 23.6 28.9 — — cap 6000 3 68 127 22.4 25.9 30.5 — — cap 6000 4 75 159 28.4 27.7 33 — — coupling (maker A, B as printed, in; letters undefined) 3000 1/2 1.12 1.88 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 3/4 1.33 2.00 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 1 1.75 2.38 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 1-1/4 2.25 2.62 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 1-1/2 2.50 3.12 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 2 3.00 3.38 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 2-1/2 3.62 3.62 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 3 4.25 4.25 — — — — — coupling (maker A, B as printed, in; letters undefined) 3000 4 5.50 4.75 — — — — — coupling (maker A, B as printed, in; letters undefined) 6000 1/2 1.50 1.88 — — — — — coupling (maker A, B as printed, in; letters undefined) 6000 3/4 1.75 2.00 — — — — — coupling (maker A, B as printed, in; letters undefined) 6000 1 2.25 2.38 — — — — — coupling (maker A, B as printed, in; letters undefined) 6000 1-1/4 2.50 2.62 — — — — — coupling (maker A, B as printed, in; letters undefined) 6000 1-1/2 3.00 3.12 — — — — — coupling (maker A, B as printed, in; letters undefined) 6000 2 3.62 3.38 — — — — — Files elsewhere (not hosted by Xem Studio; license as stated by the publisher): - Wermac: ASME B16.11 threaded elbows 90 / 45 deg, Class 2000, 3000, 6000 (mm) — web — Publisher's page; dimensions are facts — https://wermac.org/fittings/dim_thd_elbows.html - Wermac: ASME B16.11 threaded tees and crosses, Class 2000, 3000, 6000 (mm) — web — Publisher's page; dimensions are facts — https://wermac.org/fittings/dim_thd_tees.html - Wermac: ASME B16.11 threaded end caps, Class 3000 and 6000 (mm) — web — Publisher's page; dimensions are facts — https://wermac.org/fittings/dim_thd_caps.html - Smith-Cooper (maker), via buyfittingsonline.com: Forged carbon steel fittings, Class 3000 / 6000, threaded (42-series) and socket weld (52-series): elbows, tees, couplings, caps; dimensions A and B in inches (letters not defined in the text read) — web — Maker catalog; numbers only — https://www.buyfittingsonline.com/content/pipe-fittings-forged-carbon-steel-specifications-sizing-3000-6000-lb.pdf - Bonney Forge (maker): Forged steel fittings CAD (socket weld 3000 and others; 3D models per part) — CAD — Maker's site terms: check before use [verify license at link] — https://cad.bonneyforge.com/printitem/forged-steel-fittings-unions/category-1108/3000-socket-weld-1 - Bonney Forge (maker): Forged steel fittings catalog F9-2012 (socket weld and threaded elbows, tees, couplings, caps; ASME B16.11); read for its scope only, its tables were not used (the extract disagreed with the other two sources) — web — Maker catalog — https://bonneyforge.com/assets/files/FSFU.pdf - ANSI Webstore (standard body storefront): ASME B16.11-2016 Forged Fittings, Socket-Welding and Threaded (the standard itself is paywalled; listing only) — web — Storefront page — https://webstore.ansi.org/standards/asme/asmeb16112016 Free files (CC BY 4.0, Xem Studio; STEP + STL, 13 parts): https://xemstudio.com/files/hardware/forged-threaded-fittings-b16-11/index.json API: https://xemstudio.com/api/geometry?object=forged-threaded-fittings-b16-11