Following is a list of manufacturers' most commonly used thread sizes. Each manufacturer may have some models that use threads other than listed, so it's always best to measure spike threads before purchasing. Proper thread can be determined easily by taking a spike to the hardware store and matching the thread with an available bolt or nut.

U.S. thread sizes:

8-32 = .164" outside diameter, 32 threads per inch

10-32 = .190" outside diameter, 32 threads per inch

1/4"-20 = 1/4" outside diameter, 20 threads per inch

5/16"-18 = 5/16" outside diameter, 18 threads per inch

3/8"-16 = 3/8" outside diameter, 16 threads per inch

Metric thread sizes:

M5 = 5mm outside diameter, 0.8mm between threads

M6 = 6mm outside diameter, 1mm between threads

M8 = 8mm outside diameter, 1.25mm between threads

M10 = 10mm outside diameter, 1.5mm between threads

  -Manufacturers' Most Common Thread Sizes-

Manufacturer:

Thread Size:

Acoustic Energy

M8

Acoustic Research
M6
ADAM Audio 1/4"-20
Aerial Acoustics
1/4"-20
ALR/Jordan
M8
Amphion
M6
Apertura M8

Apogee Speakers

5/16"-18

AR
M6
Atacama
M6
ATC
M5
ATC SCM150 ASL Tower
M8
Athena
M6

Audio Physic

M8

Audio Pro
M6
Audio Vector M3
M6
Audio Vector S6
M8
Avantgarde

M8

M10

Axiom 14"-20

Balanced Audio Tech (BAT)

1/4"-20

B&W

M6

M8

M10

Boltz-USA
5/16"-18
Boston Acoustics
1/4"-20
Bryston 1/4"-20
Canton
M6
Caravelle 1/4"-20
Cary Audio - CAD805
6-32
Cary Audio - SLI-80
6-32
Castle Acoustics

M6

M8

Celestion
M6
Chalio
M6

Chicago Speaker Stands

1/4"-20

Coda Pre & Power Amps

8-32

Coincident 1/4"-20

Core Audio Designs

  plyKraft series

  previous designs

3/8"-16

M8

Daedalus Da-RMa 14"-20

Dahlquist

1/4"-20

Dali

Dali

Dali Helicon

M6

M8

M10

Definitive Technology

1/4"-20

Dynaudio

M8

M10

Dynavoice
M6

Eminent Technology

1/4"-20

Empire M
M8
Energy

1/4"-20

M6

Forsman
M8

Fried

M8

Gale
M6
Gallo
M8
Gradient
M6

Harmonic Precision

1/4"-20
Heco

M6

M8

Highland Audio M8
Hyperion
M8

Immedia RPM Turntables

1/4"-20

Infinity Alpha
M6
Infinity Kappa
M8
Infinity USA
1/4"-20
Jamo
M8
JBL

M6

M8

JBL Studio L890

5/16"-18

JM Labs

M6

M8

Jordan/ALR
M8
JPW
M8
KEF
M6

KEF (Floor Standing)

M8

KEF Q M8
Kharma 1.0 M10

Kinergetics Electronics

6-32

Klipsch

1/4"-20

M6

Lead Balloon Turntable Stand

3/8"-16

Linn Loudspeakers

M8
   

Manufacturer:

Thread Size:

Magnat
M6

Magnepan

1/4"-20

Magnepan by MyeSound

1/4"-20
5/16"-18

Mark Levinson

10-32

Martin Logan

1/4"-20

5/16"-18

3/8"-16

MBL

M6

McIntosh
1/4"-20
Meadowlark newer models
1/4"-20

Meadowlark older models

3/8"-16
Meridian

M6

M8

Merlin

1/4"-20

Michael Yee Electronics

8-32

Mirage

1/4"-20

Mission

M6

M8

M&K Sound

1/4"-20

M.M. Sound

M6

M8

Monitor Audio
M6
Monitor Audio Studio 50 & 60
M8
Monsoon
M6

Mordaunt-Short

1/4"-20

M6

MyeSound

1/4"-20

Near

1/4"-20

NewForm Research
1/4"-20
Nexus speaker stands
M6
NHT
1/4"-20

NSM Loudspeakers

1/4"-20

Opera - Consonance M8

Oracle Turntables

1/4"-20

Paradigm 5se-9se MK3 Series

M6

Paradigm 11se MK III

and Bipolar

3/8"-16

Paragon

1/4"-20

Pass Labs

10-32

Patos Basic M6
Patos Lyric M8
Phase Tech.
1/4"-20
PMC (PB1i) M8

Proac

M6

M8

Pro Tech M8

PSB

1/4"-20

QLN M8

QUAD

M8
Rega M6
REL M8

Revel Performa Series

1/4"-20

M8

Revel Salon / Studio

(this stud size not available
from Herbie's Audio Lab)

1/2"-13

Roland Research

10-32

Ruark
M8
Ruark Templar II
M6

Salamander Racks

  Archetype

  Synergy

5/8"-11

5/16"-18

Shanling Electronics CDT 100

SCDT-200

3/8"-16

Shunyata Research Power

Distribution

8-32

Silverline

M8

Skylan

1/4"-20

Snell

1/4"-20

5/16"-18

Sonic Frontiers

8-32

Sonus Faber M8

Sota Sapphire and Star

5/16"-18

Sound Anchors Stands

1/4"-20

3/8"-16

Sound Dynamics
1/4"-20
Soundlab
1/4"-20

Spica TC-50, TC-60

1/4"-20
StandDesign
M8

Symphonic Line Amplifiers

10-32

Synthesis

1/4"-20

System Audio M8
Talon Audio
3/8"-16
Tannoy

M6

M8

TAOC - Audio Rack
M8
Target Racks

M6

M8

TDL
M6

Thiel

5/16"-18

Timbre Electronics

1/4"-20

Totem
1/4"-20

Townsend Audio Seismic Sink

M8

Vantage
M8

Vandersteen 2C, 2W, 4A

3/8"-16

Vandersteen 1B, 2C stand, 3A

1/4"-20

Vantage M8

Velodyne Subwoofers

1/4"-20

Versa Dynamics Turntables

3/8"-16

Vienna Acoustics

M6
M10

Von Schweikert VR-2, VR-4jr

M8

Von Schweikert VR3.5I,

VR-4, VR-4 III SE, VR-6

3/8"-16

VPI Turntables

10-32

Wadia Electronics

10-32

Wharfedale
M6
Wilson Beuesch
M8

Wilson Watt/Puppies

3/8"-16

Yamaha
M6
Zu Audio 3/8"-16

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