Onan DYC Series Operator's Manual And Parts Catalog page 77

HARDWARE IDENTIFICATION
Illustrated hardware items are only for identification purposes. AH hardware items listed throughout this parts
catalog are steel SAE grade five (5) or lower (zinc plated with clear chromate dip) unless parts description
indicates differently. All dimensions are in inches.
WASHER TYPES —
EXTERNAL TOOTH
LOCK (ET)
INTERNAL TOOTH EXTERNAL-INTERNAL COUNTERSUNK
LOCK (IT) TOOTH LOCK (EIT) EXTERNAL TOOTH
LOCK
SPRING
LOCK
•FLAT
Flat washer dimensions given are: Inside Diameter (ID), Outside Diameter (OD)
and Thickness (Thk).
BOLT AND SCREW TYPES
CARRIAGE BOLT TRUSS HEAD BINDER HEAD
PAN HEAD HEXAGON HEAD FILLISTER HEAD FLAT HEAD
8
ROUND HEAD HEXAGON WASHER OVAL HEAD
HEAD
SQUARE HEAD SOCKET HEAD
l-i l -
TWELVE POINT
CAP
SLOTTED
SET
SOCKET
SET
L - Measure length between these points.
e
SLOTTED
INTERNAL DRIVE TYPES
CROSS RECESSED
(PHILLIPS)
SIX POINT
SOCKET
TWELVE POINT
SOCKET
Nominal size (fractional diameter or screw number)
Number of threads per inch
— Length in inches
1/4-20 x 3/4"
NUT T Y P E S
FULL HEXAGON JAM HEXAGON HEXAGON WASHER SQUARE WING ACORN
STD. #35