# PVC Schedule 40 socket dimensions (ASTM D2466): entrance Ø, bottom Ø, socket length, 1/2 to 4 in

> What are the socket dimensions of a Schedule 40 PVC fitting: entrance diameter, bottom diameter and socket depth?

- Category: Tri-clamp & pipe › Pipe, tube & threads
- Kind: Standard part
- Basis: ASTM D2466-23 and -17 Table 1 (iTeh sample pages), Wavin data sheet and Charlotte Pipe submittal agree; numbers only; McMaster-Carr linked for CAD
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- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
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**Exact dimensions.** True size, with no tolerance added.

## Notes

- PVC pipe is NOT a straight press fit. A Schedule 40 socket is a taper: it is widest at the entrance (A) and narrowest at the bottom (B), and the pipe OD sits between them (1/2 in: pipe OD 0.840, socket 0.848 at the mouth and 0.836 at the bottom). Solvent cement fills the gap; a dry pipe goes in part-way and stops. A part that goes INTO a socket (a printed adapter spigot) is sized to the pipe OD, from the page 'pvc-schedule-40-80-pipe-od-and-wall'; the table here is for a part that is a socket.
- Same table, three readings: ASTM D2466-23 (iTeh sample pages) Table 1 for 1/2 to 4 in (1/8 to 12 in there), ASTM D2466-17 (identical for every size and column), Wavin's data sheet (A and B for all 10 sizes) and Charlotte Pipe's submittal (A, B and C for 9 sizes, no 3-1/2). All agree to the thousandth of an inch.
- C is the MINIMUM socket length. A maker's real socket can be longer (Charlotte's 1/2 in 90° elbow has a 3/4 in deep socket, Spears' 3/4 in has 15/16 in): see the laying-length page. D is the minimum inside diameter of the waterway and M the minimum hub outside diameter; makers mold the hub larger (Spears prints M = 1-1/8 in for a 1/2 in elbow vs 0.998 here).
- Charlotte's submittal also gives the Schedule 80 socket length C: 1/2 in 0.875, 3/4 in 1.000, 1 in 1.125, 1-1/4 in 1.250, 1-1/2 in 1.375, 2 in 1.500, 2-1/2 in 1.750, 3 in 1.875, 4 in 2.250 (the submittal prints one A and B for both schedules). No Schedule 80 fitting standard table was read, so no Sch 80 hub or bore is listed.
- McMaster-Carr's Schedule 40 PVC fitting page (linked) lists socket-connect elbows, tees and couplings in 1/2, 3/4, 1, 1-1/2 and 2 in (3 and 4 in for some); it does not print socket dimensions. Left out: sizes under 1/2 in and over 4 in (in D2466-23 but not asked), the wall-thickness and out-of-round columns of Table 1 whose column assignment was scrambled in extraction.

## Sizes

| nominal pipe size, in | A: socket entrance Ø, in (mm) | B: socket bottom Ø, in (mm) | tolerance on A and B, in (mm) | C: socket length, min, in (mm) | D: inside Ø, min, in (mm) | M: hub outside Ø, min, in (mm) |
|---|---|---|---|---|---|---|
| 1/2 | 0.848 (21.54) | 0.836 (21.23) | ±0.004 (±0.10) | 0.688 (17.48) | 0.578 (14.68) | 0.998 (25.35) |
| 3/4 | 1.058 (26.87) | 1.046 (26.57) | ±0.004 (±0.10) | 0.719 (18.26) | 0.740 (18.80) | 1.221 (31.01) |
| 1 | 1.325 (33.65) | 1.310 (33.27) | ±0.005 (±0.13) | 0.875 (22.22) | 0.990 (25.15) | 1.504 (38.20) |
| 1-1/4 | 1.670 (42.42) | 1.655 (42.04) | ±0.005 (±0.13) | 0.938 (23.83) | 1.335 (33.91) | 1.871 (47.52) |
| 1-1/2 | 1.912 (48.56) | 1.894 (48.11) | ±0.006 (±0.15) | 1.094 (27.79) | 1.564 (39.73) | 2.127 (54.03) |
| 2 | 2.387 (60.63) | 2.369 (60.17) | ±0.006 (±0.15) | 1.156 (29.36) | 2.021 (51.33) | 2.634 (66.90) |
| 2-1/2 | 2.889 (73.38) | 2.868 (72.85) | ±0.007 (±0.18) | 1.750 (44.45) | 2.414 (61.32) | 3.170 (80.52) |
| 3 | 3.516 (89.31) | 3.492 (88.70) | ±0.008 (±0.20) | 1.875 (47.62) | 3.008 (76.40) | 3.841 (97.56) |
| 3-1/2 | 4.016 (102.01) | 3.992 (101.40) | ±0.008 (±0.20) | 2.000 (50.80) | 3.486 (88.54) | 4.374 (111.10) |
| 4 | 4.518 (114.76) | 4.491 (114.07) | ±0.009 (±0.23) | 2.000 (50.80) | 3.961 (100.61) | 4.907 (124.64) |

## Where the files are

- ASTM International (iTeh sample pages): [ASTM D2466-23, PVC plastic pipe fittings, Schedule 40: Table 1 tapered sockets (A, B, C, D, M)](https://cdn.standards.iteh.ai/samples/115891/d554fe0f89704b3490e92629642ca418/ASTM-D2466-23.pdf) — web — Publisher's page; dimensions are facts
- ASTM International (iTeh sample pages): [ASTM D2466-17 Table 1 (identical values for 1/2 to 4 in)](https://cdn.standards.iteh.ai/samples/97866/5818cd2232884a6290af06083e9f444b/ASTM-D2466-17.pdf) — web — Publisher's page; dimensions are facts
- Wavin: [PVC Sch 40 fittings data sheet: Table 1 tapered sockets (A, B)](https://blog.wavin.com/hubfs/Product%20Literature/PVC%20Sch40%20Fittings%20Data%20Sheet.pdf) — web — Publisher's page; dimensions are facts
- Charlotte Pipe: [PVC Schedule 40 submittal: socket entrance A, bottom B, socket length C (Sch 40 and Sch 80)](https://www.charlottepipe.com/Documents/Submittal/FO-SUB-PVC-40.pdf) — web — Publisher's page; dimensions are facts
- McMaster-Carr: [PVC (Schedule 40) fittings and pipe, UV-resistant (socket-connect elbows, tees, couplings) (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/uv-resistant-pvc-(schedule-40)-pipe-fittings-and-pipe/) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)
- McMaster-Carr: [Pipe and fittings, ASTM D2665 (PVC DWV) (free STEP/IGES per part, for your own design use; no redistribution)](https://www.mcmaster.com/products/pipe-and-fittings/specifications-met~astm-d2665/) — STEP, IGES, PDF — McMaster-Carr site terms: personal design use, no redistribution (verify at link)

## Questions

**What is the inside diameter of a 1/2 in Schedule 40 PVC socket?**

0.848 in (21.54 mm) at the entrance, tapering to 0.836 in (21.23 mm) at the bottom, ±0.004 in. The pipe OD is 0.840 in.

**How deep is a Schedule 40 PVC socket?**

At least 0.688 in (1/2 in), 0.719 in (3/4), 0.875 in (1), 1.094 in (1-1/2), 1.156 in (2), 2.000 in (4); makers' real sockets can be longer.

**Why is a PVC socket tapered?**

The taper gives a dry interference fit that stops the pipe part-way and leaves a thin cement gap; the pipe OD lies between the entrance and bottom diameters.

## Fits with

- [PVC Schedule 40 and Schedule 80 pipe: OD, minimum wall and ID, 1/2 to 4 in](https://xemstudio.com/objects/pvc-schedule-40-80-pipe-od-and-wall/)
- [PVC Schedule 40 fittings: 90° and 45° elbow, tee, coupling and cap laying lengths (Charlotte vs Spears), 1/2 to 4 in](https://xemstudio.com/objects/pvc-schedule-40-fittings-laying-lengths/)
- [Schedule 40 pipe and PVC fittings, 1/2 to 2 inch](https://xemstudio.com/objects/schedule-40-pipe/)
- [NPT male thread envelopes 1/8 to 1 in (ASME B1.20.1)](https://xemstudio.com/objects/npt-thread-envelopes/)
- [Copper pipe (ASTM B88 Type L and M), 1/4 to 2 inch](https://xemstudio.com/objects/copper-pipe-type-l-m/)