By | April 26, 2015

Standard abbreviations in draughting are recommended as notes to provide a brief and clear instructions. “Draughting Abbreviations” table provides the draughting abbreviations for general terms and “Abbreviations for Materials” table represents material abbreviations.

Draughting Abbreviations

Term Abbreviation Term Abbreviation
Across cornersAcross flats

Approved

Approximate

Assembly

Auxiliary

Bearing

Centimetre

Centres

Centre line

Centre to centre

Chamfered

Checked

Cheese head

Circular pitch

Circumference

Continued

Counterbore

Countersunk

Cylinder

Diameter

Diametral pitch

Dimension

Drawing

Equi-spaced

External

Figure

General

Ground level

Ground

Hexagonal

Inspection

Inside diameter

Internal

Left hand

Machine

A/CA/F

APPD

APPROX

ASSY

AUX

BRG

Cm

CRS

CL

C/L

CHMED

CHD

CH HD

CP

OCE

CONTD

C BORE

CSK

CYL

DIA

DP

DIM

DRG

EQUI-SP

EXT

FIG.

GNL

GL

GND

HEX

INSP

ID

INT

LH

M/C

MaunfactureMaterial

Maximum

Metre

Mechanical

Millimetre

Minimum

Nominal

Not to scale

Number

Opposite

Outside diameter

Pitch circle

Pitch circle diameter

Quantity

Radius

Radius in a note

Reference

Required

Right hand

Round

Screw

Serial number

Specification

Sphere/Spherical

Spot face

Square

Standard

Symmetrical

Thick

Thread

Through

Tolerance

Typical

Undercut

Weight

MFGMATL

max.

m

MECH

mm

min.

NOM

NTS

No.

OPP

OD

PC

PCD

QTY

R

RAD

REF

REQD

RH

RD

SCR

Sl. No.

SPEC

SPHERE

SF

SQ

STD

SYM

THK

THD

THRU

TOL

TYP

U/C

WT

Abbreviations for Materials

Material Abbreviation
AluminiumBrass

Bronze

Cast iron

Cast steel

Chromium steel

Copper

Forged steel

Galvanised iron

Gray iron

Gunmetal

High carbon steel

High speed steel

High tensile steel

Low carbon steel

Mild steel

Nickel steel

Pearlitic malleable iron

Phosphor bronze

Sheet steel

Spring steel

Structure steel

Tungston carbide steel

Wrought iron

White metal

ALBRASS

BRONZE

CI

CS

CrS

Cu

FS

GI

FG

GM

HCS

HSS

HTS

LCS

MS

Ni S

PM

PHOS.B

Sh S

Spring S

St

TCS

WI

WM

Right Hand and Left Hand Threads