Precision Expanding Dowels

Jergens, Inc
Jergens Precision Expanding Dowels allow for fast and accurate location of twin vises on locator plates. The top and bottom half of the dowel expand separately. Aligns (2) holes concentrically and locks them into position. Both locking screws are accessed from the top of the pin.

Features, Benefits, & Product Specifications:
  • Material: Alloy Steel
  • Heat Treat: Case Hardened to 50-55 RC
  • Self-centering and repeatable within ±0.0005″ (0.013mm)
  • Patented

Installation Instructions:

1. Remove the top screw, insert the dowel into the locating hole of the first part, and expand the bottom half with a hex wrench.

2. Replace the top screw, slide the locating hole of the second part over the dowel and expand the top half with a hex wrench.

Part Number
Recommended Hole Diameter 0 001 0 000 In
A DIA. +0.000/-0.001 (In)
B DIA. +0.000/-0.010 (In)
H1 +/- 0.005 (In)
Hex Key Size Bottom: Step 1
Hex Key Size Top: Step 2
Nominal Diameter (In)
Nominal Length H (In)
L1 +/-0.005 (In)
Price
0.25
0.249
0.245
0.428
5/64
3/32
1/4
1/2
0.428
£57.85
0.375
0.374
0.37
0.634
1/8
5/32
3/8
3/4
0.634
£75.77
0.5
0.499
0.495
0.881
5/32
3/16
1/2
1
0.881
£62.33
0.625
0.624
0.62
1.162
3/16
7/32
5/8
1 1/4
1.162
£63.80
0.75
0.749
0.745
1.39
1/4
5/16
3/4
1 1/2
1.39
£66.77
1
0.999
0.995
1.758
3/8
1/2
1
2
1.758
£72.76

UK Stock – Coming Soon!

We are currently working with Jergens USA to provide a full compliment of stock here in the UK for fast next day shipping. More details to follow!

Next Day Shipping

Order before 4PM Mon-Fri for orders to be shipped next day. Orders currently are shipped from the US, 3-5 days via UPS.

On-Site Support

Our experienced technical staff are on-hand to provide expert support.