---
kind: "section"
citation: "33 C.F.R. § 183.556"
title: "33"
number: "183.556"
heading: "Plugs and fittings."
url: "https://uscodex.org/cfr/33/183.556"
---

# §183.556. Plugs and fittings.

- (a) A fuel system must not have a fitting for draining fuel.
- (b) A plug used to service the fuel filter or strainer must have a tapered pipethread or be a screw type fitted with a locking device other than a split lock washer.

## Notes

### Source

Source: CGD 74-209, 42 FR 5950, Jan. 31, 1977, unless otherwise noted.

### Authority

Authority: 46 U.S.C. 4302; Pub. L. 103-206, 107 Stat. 2439; and Department of Homeland Security Delegation No. 0170.1, para. II, (92)(b). Subpart E is also authorized by Pub. L. 114-120, 130 Stat. 27

### Source

Source: CGD 72-61R, 37 FR 15782, Aug. 4, 1972, unless otherwise noted.