Otto Frei.
Quality Jewelry Supplies for Generations - Since 1930
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Spring Bars - All Types

What You Need To Know: #1) Lug Size (Distance between the lugs where bracelet or strap fits). KNOW THE LUG SIZE, The spring bar sizes listed on the pages below are the lug size the bar was designed to fit (not the end to end size). #2) Thickness of the Spring Bar (Most common thickness of all is 1.80 mm for leather straps, metal bracelets and rubber bands. However, some metal bracelets have narrow tubes and require 1.5 mm and sometimes smaller diameter bars. Also, certain bracelets and rubber strap where designed for thicker bars. #3) Type Of Bar To Use. Depending of the requirement and uses, spring bars come with different types and styles of ends. The two most common bars are Double Shoulder and Double Flange, which are practically interchangeable for most uses on leather, rubber and metal bracelets. Some, prefer Double Shoulder for leather and Double Flange for metal bracelets. Bracelet Clasps and Bracelet Links can require Special Ends or even Single Shoulder Spring Bars which you will find all listed on the linked pages below.

Inches to Millimeters
1/4" = 7 mm, 5/16" = 8 mm, 3/8" = 10 mm, 7/16" = 11 mm

1/2" = 13 mm, 9/16" = 14 mm, 5/8" = 16 mm, 11/16" = 18 mm

3/4" = 19 mm, 13/16" = 20 mm, 7/8" = 22 mm


High Grade, Stainless Steel Double Shoulder 1.8 mm thick

From 1/4" (7 mm) to 1" (26 mm)

High Grade, Stainless Steel Double Flange 1.8 mm thick

From 1/4" (7 mm) to 1" (26 mm)

High Grade Double Flange Thin 1.5 mm

From 1/2" (13 mm) to 7/8" (22 mm)

High Grade, Stainless Steel 1.3mm Thin Double Flange

From 1/4" (7 mm) to 1" (25 mm)

High Grade, Stainless Steel 1.5 mm Thin Extra Long Double Flange Spring Bars

From 23 mm to 40 mm.
(0.914" to 1.57 of an inch)

Swiss Made 2.0 mm Thick Extra Long Double Flange Telescopic Spring Bars

From 20 mm to 30 mm

High Grade, Stainless Steel 1.5 mm Thin Double Shoulder Spring Bars

From 6 mm to 22 mm

The Highest Quality Swiss Made Spring Bars

1.5 mm, 1.8 mm and 2.0 mm thick, from 13 mm to 24 mm
Swiss Made

Swiss Made 100% Stainless Steel 1.0 to 1.15 mm Thin Single Shoulder

From 6 mm to 20 mm, used on clasps & links

Swiss Made 100% Stainless Steel 1.17 mm Thin

One end Double Flange, the other Buckle Style-Pivot
From 12 mm to 18 mm, used on clasps & buckles.

Swiss Made 100% Stainless Steel 1.2 mm Thin Single Shoulder

From 6.5 mm to 21 mm

Swiss Made 100% Stainless Steel 1.3 mm Thin Single Shoulder

From 5 mm to 21 mm

Single Shoulder 1.8 mm Diameter Swiss Made Stainless Steel Spring Bars


Spring Bars to Fit Foldover Buckles, Center Clasps on Watch Bracelets

Diameters 1 mm to 1.5 mm Thick, Short Pivots
In Single Flange, Double Flange and Single Shoulder Styles

High Grade Spring Bars, 100% Stainless Steel Curved Spring Bars 1.5 mm thick

From 5/8" (16 mm) to 7/8" (22 mm)

Economy Spring Bars


Single Shoulder 1.5 mm Diameter Swiss Made Maillechort Spring Bars


Female Spring Bars


Shoulders Less Spring Bars

You read on a forum about Shoulder Less Spring Bars?

Click here to find out that they are really called Single Shoulder Spring Bars.


Spring Bar Assortments


Quick Change Lock-Tite Spring Bars


Seiko Spring Bars


Spring Bars To Fit Rolex®


Genuine Omega Spring Bars

During 2015 Omega/Swatch Group Stopped Supplying Parts Worldwide
If the Omega item you need is not listed, contact the Swatch Group Service Center.

101 Spring Bars Assorted Sizes & Types

Great Assortment of 101 Spring Bars for only four dollars and ninety five cents! This assortment contains a mixture of different, types, thickness, and sizes which will allow you to get started replacing spring bars right away without making a big investment. Spring Bar Tool not included.


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Watch Band Screws to fit Panerai


Carbon Fiber Style Sport Straps

On Sale $12.95


Economy Spring Bar Bending Pliers


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Spring Bar Tools


Expansion Watch Band Bracelets For Men

Click Here for Men's Expansion Bands

Jewelry - Chains - Money Clips & More - Otto Frei

Jewelry Liquidation Sale
The Otto Frei Jewelry Department is Closing Out All Jewelry Products
While the Otto Frei Jewelry Department isn't 90 years old, like the Watch Material Department. Still, Otto Frei has sold some of these Jewelry Products directly to retail jewelers for more than 80 years.
Otto Frei, Watch Parts Since 1930
Customers Entrance
126 2nd St. Oakland, California 94607
Mailing Address: PO BOX 796, Oakland Ca. 94604
Freight Shipment Address: 119 3rd St. Oakland Ca. 94607 USA

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510.832.0355 EXT. 3
800.900.3734 (fax)

510.832.0355 EXT. 3
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