Order online or call 1-800-239-6010. Telephone hours are M-F 10am to 4pm est.
708 Battlefield Blvd South., Suite 107, Chesapeake, VA 23322 (We are sorry, but we can not accommodate walk-in customers)    
    We accept all major credit cards and PayPal     Click here for Wholesale ordering

Store Front Account Search Product List Basket Contents Checkout
Customer Login or
Create New Account (Optional)

Choose a Category below:

Screw Size Chart

Wholesale Orders

ProHold Balldrivers/Hex Keys
Extra Long Balldrivers Standard and Metric
Large Extra Long Ball Drivers
Extra Small Hex Keys
Felo(tm) Screwdrivers
Bondhus Nut Drivers
Other Tools

Fastener Assortments

Socket Head Cap Screws
Socket Button Screws
Socket Flat Head (Countersink)
Socket Set Screws

Servo Mounting Screws

Servo Horn (Arm) Screws

Self Tapping....Button Head
Self Tapping Socket Head Screws

NUTS (Lock, Hex and Blind (T) nuts)

Brass Threaded Inserts for Wood

WASHERS....Flat and Lock
Rubber Backed Bonded Washers

NYLON Hardware

METRIC Socket Head Cap Screws

Metric Button Socket Screws
Metric Flat Hd. (countersink) Skts
Metric Nuts
Metric Flat and Lock Washers
Metric Set Screws

STAINLESS Assortments

Stainless Socket Heads
Stainless Sheet Metal Screws
Stainless Nuts
Stainless Washers
Stainless Metric Socket Heads
Stainless Metric Nuts
Stainless Metric Washers

Shipping and Handling

Customer Comments

#5000 Suggested layout
Shopping Cart Problems?
AMA Welcome
Welcome Page
New and Revised Products
Club Special Offer

Join Our Mailing List

Screw or Bolt        Diameter                 Diameter          Closest 
Size                     Inches                       MM            Metric Screw 

No.0 or 0-80           0.060 Inches         1.524 MM          M1.5

No.1 or 1-64           0.073                    1.854                M2
No.2 or 2-56           0.086                    2.184                M2

No.3 or 3-48           0.099                    2.515                M2.5

No.4 or 4-40           0.112                     2.845                M3
No.5 or 5-40           0.125                    3.175                 M3
No.6 or 6-32           0.138                    3.505                M3.5

No.8 or 8-32           0.164                    4.166                 M4

No.10 or 10-32        0.190                   4.826                 M5

"1/4"" or 1/4-20"     0.245                    6.223                 M6

How to read this chart:
 As an example:

A #2 pointy screw or a 2-56 Socket Head Cap Screw would be very close to an M2 Screw or bolt

Another example: What size metric fasteners would be very close to a #4 or 4-40 fastener. Answer would be an M3, because as you can see by the chart, it is only slightly larger. </P> <font size ="5">Screw Size Chart </font size>