A

ADJ: Adjustable

AISC: American Institute of Steel Construction

AIS: American and Steel Institute

Al: Aluminum

ANSI: American National Standards Institute

Approx: Approximate

ASME: American Society of Mechanical Engineers

ASTM: American Society for Testing and Materials

AWG: American Wire Gauge

B

BC: Bolt Circle

B.O.M.: Bill of Material

BOT: Bottom

Brz: Bronze

C

CAD: Computer-Aided Drafting

CAM: Computer-Aided Manufacturing

CBORE: Counterbore

C.I.: Cast Iron

CL: Center Line

CONT: Continuous

CMM: Coordinate Measuring Machine

CRS: Colled Rolled Steel

CTR: Center

D

DB: Double

DET: Detail

DIA: Diameter

DIM: Dimension

DP: Deep

DR: Drill

DWG: Drawing

F

FAO: Finish All Over

FIN: Finish

FOS: Feature of Size

FT: Foot or Feet

G

GA: Gauge

GALV: Galvanized

GD&T: Geometric Dimensioning & Tolerancing

H

HRS: Hot Rolled Steel

HT TR: Heat Treat

I

ID: Inner Diameter

ISO: International Standards Organization

M

MATL: Material

MAX: Maximum

MECH: Mechanical

MIN: Minimum

MISC: Miscellaneous

N

NTS: Not to Scale

O

OD: Outer Diameter

OPP: Opposite

P

PD: Pitch Diameter

R

R: Radius

REF: Reference

REQD: Required

S

SAE: Society of Automotive Engineers

SPEC: Specification

SS: Stainless Steel

STD: Standard

STL: Steel

T

TOL: Tolerance

TPF: Taper Per Foot

TYP: Typical

U

UNC: Unified National Coarse

UNEF: Unified National Extra Fine

UNF: Unified National Fine