Thursday, January 7, 2016

Engineering Communication (Standard Abbereviations)

STANDARD ABBREVIATIONS

Standard abbreviations in draughting are recommended as notes to provided a brief and clear instructions.



Term
Abbreviations

Term
Abbreviations
Across corners
A/C

Manufacture
MFG
Across flats
A/F

Material
MATL
Approved
APPD

Maximum
Max.
Approximate
APPROX

Meter
m
Assembly
ASSY

Mechanical
MECH
Auxiliary
AUX

Millimeter
mm
Bearing
BRG

Minimum
Min.
Centimeter
CM

Nominal
NOM
Centers
CRS

Not to scale
NTS
Center Line
Cl

Number
No.
Center to center
C/L

Opposite
OPP
Chamfered
CHMED

Outer diameter
OD
Checked
CHD

Pitch circle
PC
Cheese head
CH HD

Pitch circle diameter
PCD
Circular pitch
CP

Quantity
QTY
Circumference
OCE

Radius
R
Continued
CONTD

Radius in note
RAD
Counter bore
C BORE

Reference
REF
Countersink
CSK

Required
REQD
Cylinder
CYL

Right hand
RH
Diameter
DIA

Round
RD
Diametrical pitch
DP

Screw
SCR
Dimension
DIM

Serial number
SI. NO.
Drawing
DRG

Specification
SPEC
Equi-spaced
EQUI-SP

Sphere/Spherical
SPHERE
External
EXT

Spot face
SF
Figure
FIG.

Square
SQ
General
GNL

Standard
STD
Ground level
GL

Symmetrical
SYM
Ground
GND

Thick
THK
Hexagonal
HEX

Thread
THD
Inspection
INSP

Through
THRU
Inside diameter
ID

Tolerance
TOL
Internal
Int

Typical
TYP
Left hand
LH

Undercut
U/C
Machine
M/c

Weight
WT

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