[Code of Federal Regulations]
[Title 16, Volume 2]
[Revised as of January 1, 2007]
From the U.S. Government Printing Office via GPO Access
[CITE: 16CFR1512.4]

[Page 557-558]
 
                     TITLE 16--COMMERCIAL PRACTICES
 
             CHAPTER II--CONSUMER PRODUCT SAFETY COMMISSION
 
PART 1512_REQUIREMENTS FOR BICYCLES--Table of Contents
 
                          Subpart A_Regulations
 
Sec.  1512.4  Mechanical requirements.

    (a) Assembly. Bicycles shall be manufactured such that mechanical 
skills required of the consumer for assembly shall not exceed those 
possessed by an adult of normal intelligence and ability.
    (b) Sharp edges. There shall be no unfinished sheared metal edges or 
other sharp parts on bicycles that are, or may be, exposed to hands or 
legs; sheared metal edges that are not rolled shall be finished so as to 
remove any

[[Page 558]]

feathering of edges, or any burrs of spurs caused during the shearing 
process.
    (c) Integrity. There shall be no visible fracture of the frame or of 
any steering, wheel, pedal, crank, or brake system component resulting 
from testing in accordance with: The handbrake loading and performance 
test, Sec.  1512.18(d); the foot brake force and performance test, Sec.  
1512.18(e); and the road test, Sec.  1512.18(p) (or the sidewalk bicycle 
proof test, Sec.  1512.18(q)).
    (d) Attachment hardware. All screws, bolts, or nuts used to attach 
or secure components shall not fracture, loosen, or otherwise fail their 
intended function during the tests required in this part. All threaded 
hardware shall be of sufficient quality to allow adjustments and 
maintenance. Recommended quality thread form is specified in Handbook 
H28, ``Screw Thread Standards for Federal Service,'' \1\ issued by the 
National Bureau of Standards, Department of Commerce; recommended 
mechanical properties are specified in ISO Recommendation R898, 
``Mechanical Properties of Fasteners,'' and in ISO Recommendations 68, 
262, and 263, ``General Purpose Screw Threads.'' \2\
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    \1\ Copies may be obtained from: Superintendent of Documents, U.S. 
Government Printing Office, Washington, D.C. 20402.
    \2\ Copies may be obtained from: American National Standards 
Institute, 1430 Broadway, New York, New York 10018.
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    (e)-(f) [Reserved]
    (g) Excluded area. There shall be no protrusions located within the 
area bounded by (1) a line 89 mm (3\1/2\ in) to the rear of and parallel 
to the handlebar stem; (2) a line tangent to the front tip of the seat 
and intersecting the seat mast at the top rear stay; (3) the top surface 
of the top tube; and (4) a line connecting the front of the seat (when 
adjusted to its highest position) to the junction where the handlebar is 
attached to the handlebar stem. The top tube on a female bicycle model 
shall be the seat mast and the down tube or tubes that are nearest the 
rider in the normal riding position. Control cables no greater than 6.4 
mm (\1/4\ in) in diameter and cable clamps made from material not 
thicker than 4.8 mm (\3/16\ in) may be attached to the top tube.
    (h) [Reserved]
    (i) Control cable ends. Ends of all control cables shall be provided 
with protective caps or otherwise treated to prevent unraveling. 
Protective caps shall be tested in accordance with the protective cap 
and end-mounted devices test, Sec.  1512.18(c), and shall withstand a 
pull of 8.9 N (2.0 lbf).
    (j) Control cable abrasion. Control cables shall not abrade over 
fixed parts and shall enter and exit cable sheaths in a direction in 
line with the sheath entrance and exit so as to prevent abrading.