The Fastron Co. - Manufacturing & Designing High Quality Custom Fasteners

Clamp-Fast Terminal Screws

The #1 selling screw in today's electronic products!

The patented Clamp-Fast radial angle rib design of an integral locking washer provides the best contact and resistance regardless or wire size and positioning.

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Wire sizes and combinations
Wire sizes and combinations

The Clamp-Fast screw accommodates a wide range of wire sizes and combinations, allowing you to use one terminal for wire of different sizes. This feature often permits reducing the number of terminals needed or eliminates the need to use all the same wiring.

Since one Clamp-Fast can do the job of two or more conventional terminal screws, it cuts down assembly time.

The Clamp-Fast screw makes for fumble-free wire insertion. While the screw turns freely in the clamping plate, the plate is always held directly beneath the head allowing wires to be inserted easily.

The Clamp-Fast screw's design has a slip-proof and cut-proof surface. Total area serration assure positive holding regardless of how the wire is positioned under the clamping plate. Serrations provide greater contact and pull out resistance. Edges are flattened to avoid cutting or damaging fine stands of wire.

Competitive screw products typically use a holding method of force concentrated on one or two lugs, increasing the possibility of pull out failures and cutting of stranded wires when compared to the Clamp-Fast design of 360 degree uniform pressure.

Key Benefits of the Clamp-Fast:

  • Design provides for greater contact and holding force.
  • Accommodates a wide range of wire sizes and combinations.
  • Made in the U.S.A.

For additional information on this product, contact us today and we will have a fastener expert contact you.

Clamp-Fast Specifications

Clamp-Fast™ Specifications
Clamp-Fast Specifications

Various head types are available for all combinations shown. The Clamp-Fast™ is available in thread forming, self-tapping and self-centering. Sizes other than those shown below are available on special order.

FOR WIRE SIZES
* to *
22 to 16
22 to 16
22 to 12
18 to 10
18 to 10
22 to 16
22 to 16
SAE Specifications
Metric Specifications
"A"
3-48
4-40
5-40
6-32
8-32
10-32
M 3.0
M 3.5
"B"
7/32" to 7/16"
7/32" to 7/16"
1/4" to 7/16"
1/4" to 1/2"
9/32" to 1/2"
10/32" to 1/2"
6mm to 13mm
6mm to 13mm
"C"
Table-3
Table-4
Table-5
Table-6
Table-8
Table-10
Table-30
Table-35

* Contact Fastron for available wire sizes.

NOTE: All washer sizes are available in either steel or brass.

TABLE-3
TABLE-4
TABLE-5
TABLE-6
TABLE-8
TABLE-10
TABLE-30
TABLE-35
"C"
"C"
"C"
"C"
"C"
"C"
"C"
"C"
.190/.182
.230/.225
.230/.250
.271/.266
.327/.322
.437/.431
6.88/6.75
6.98/6.85
.192/.188
.243/.237
.255/.250
.290/.284
.355/.345
.500/.494
5.84/5.71
7.62/7.49
.198/.192
.255/.250
.250/.245
.300/.294
.376/.367

6.47/6.35




.315/.311
.380/.370

8.05/7.89




.317/.313
.409/.403






.355/.345




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