Interpretation ID: nht74-4.30

DATE: 07/03/74

FROM: AUTHOR UNAVAILABLE; R. B. Dyson; NHTSA

TO: Imperial-Eastman Corporation

TITLE: FMVSS INTERPRETATION

TEXT: This responds to your May 21, 1974, question whether "I" or "II" should appear as a part of the label information on renewable 3/8-inch and 1/2-inch SP fittings.

It is not permissible to include type "I" or "II" in the labeling required on renewable fittings. S7.2 calls for the end fitting identification which appears in your letter, but S7.2 reserves the use of "I" and "II" for use in reusable assemblies, that is, assemblies which include reusable end fittings. The standard classifies renewable end fittings as a type of permanently-attached end fitting.

Yours truly

May 21, 1974

Legal Department National Highway Traffic Safety Administration Attention: T. W. Herlihy

We manufacture a line of renewable fittings for 1/4, 3/8, 7/16, 1/2 and 5/8" I. D. air brake hose. These couplings have a deformable sleeve and can be assembled in our factory, or in the field, with hand tools. While the sleeve can only be used once, the other components can be reused with a new sleeve (hence, the name renewable).

According to our interpretation of FMVSS 106, these fittings will now fall into the permanently attached coupling classification. However, because they are not two piece end fittings attached by crimping or swaging, they must be permanently labeled.

After carefully studying the DOT specificaion, we have decided on the following marking for each size of fitting (the hose involved is SAE J1402 Type A and Type B). HOSE I. D. COUPLING IDENTIFICATION 1/4 DOT ** A 1/4 3/8 * DOT ** A 3/8 7/16 DOT ** A 7/16 1/2 SP * DOT ** A 1/2 SP 5/8 DOT ** A 5/8

* Shown on reusable assembly Table III.

My question is this - What, if any, designation must appear after the letter "A" on the 3/8 and 1/2 SP. fittings? The above fittings are compatible with both SAE Type A and Type B hose and your Table III does not specify which type is represented by your Type I or Type II and the dimensions of each hose are identical. Is it necessary to use I or II after the A's?

Your prompt reply will be greatly appreciated.

IMPERIAL-EASTMAN CORPORATION

Eastman Division

M. A. Chermak

Chief Product Engineer