All American Products Co.

CIRCUIT BOARD, TYPE "CB" - TECHNICAL INFORMATION

**When Ordering Specify:**
EXAMPLE:	Quantity	Bushing Type	I.D. "A"
EXAMPLE:	6	CB-2	#55

*When ordering carbide bushings, add the letter "C" after bushing type.

EXAMPLE:	Quantity	Bushing Type	I.D. "A"
EXAMPLE:	6	CB-2C	#55

TECHNICAL DATA
ALL AMERICAN circuit board bushings are designed to fit a variety of circuit board drilling machines

**I.D. TOLERANCES - All American & ANSI Standard:**
Standard Drill Sizes	I.D.	Tolerance
#55 - 1/4	Nom	+.0001/+.0004
Over 1/4 - 3/4	Nom	+.0001/+.0005
Over 3/4 - 49/64	Nom	+.0002/+.0006

STANDARD SIZES:
Standard sizes in a given I.D. range are sizes listed in the decimal equivalent chart either as a fraction, number or letter size. Any other decimal or millimeter size within a given range is considered special and will be priced accordingly.

DRILL BEARING LENGTH:

1-1/2 times I.D. (A) diameter.

STEEL:
Our bushings are manufactured from selected steels known for their long wear and stability. Bushings are also available from other materials at extra cost (bronze, M-2, D-2, stainless steel, etc.)

HARDNESS:
Rockwell C 62 - 64 in the hole.

NOTE:
All headed carbide bushings are furnished with steel heads.

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All American Products Co.
1135 Aviation Pl., P.O. BOX 190, San Fernando, CA 91340
Tel.: (818) 361-0059, Fax: (818) 898-2236
E-Mail Address: sales@allamericanproducts.com cb_tech.htm