Interpretation ID: nht75-2.31

DATE: 05/20/75

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

TO: Toyo Kogyo co., Ltd.

TITLE: FMVSS INTERPRETATION

TEXT: In reply to your letter of April 22, 1975, the "wheel nuts" covered by Motor Vehicle Safety Standard No. 211 are large, center-mounted hub nuts, one to a wheel, that lock the tire to the axle.

They are not the individual nuts, often six to a wheel, that perform the same function, and which are generally covered by a wheel disc or hub cap.

Your hub nuts and hub bolts therefore need not be marked with a manufacturer's identification code.

YOURS TRULY,

April 22, 1975

James C. Schultz Chief Counsel National Highway Traffic Safety Administration

In the Docket No. 73-14; Notice 3 issued in the Federal Register dated on March 19, 1975, S 571.211 S 3.2. says,

"Each wheel nut, wheel disc, and hubcap shall be permanently and legibly marked or labeled with the manufacturer's identification code---"

As shown in the sketch below, we use two ways to put the wheels on the vehicle, that is either (a) by screwing hub bolts only, or by screwing hub nuts into hub bolts inserted in the dram or disc with the pressure.

We are now wondering if these hub nut and hub bolt will be included in above requirement. We would appreciate your view on this issue. Thank you.

H. (SPEEDY) Hirai Technical Representative Toyo Kogyo Co., Ltd. (MAZDA) Representative Office

(Graphics omitted)