Go Green and Save Green!

When selecting finishes, select the RoHS compliant finishes. They are better for the environment and less expensive!
 

ST-1200 Line - Size 3 Studs
No Undercut

Material
Stud: hardened steel
D-ring: hard music wire
Wing: carbon steel

Finish:
Stud, D-ring, and Wing: Zinc Trivalent Clear .0003 thick. Trivalent Chromate Clear with Sealer (RoHS Compliant)
Specification(s): ASTM-B-633, Type III, SC 2, Clear
Suffix: -Z3CT

Optional Stainless Steel: Change the finish suffix from -Z3CT to -SS. (E.g., 121N-340-SS)
Stud:303 Stainless Steel
D-ring: 400 series Stainless Steel D-rings
Wing: 300 series Stainless Steel

Optional Finishes: Change the plating suffix on the part number from "Z3CT" to the desired plating. See finishes pages.

Note: The absence of an undercut on this stud prevents the use of a retainer to hold the stud in place. If this stud were installed with an ejecting spring and cup, the stud would pop out of the hole and have to be reassembled each time it is used. Therefore, the Self Ejecting (SE) configuration is not available for the "N" designated studs.

Stud Dimensions

Slotted: 121N-3*-Z3CT Wing: 121N-W3*-Z3CT
Flush: 126N-3*-Z3CT

* is the "Stud Grip" from the table. For example, 121N-340-Z3CT is an oval head stud with a "Stud Grip" of 40.

Note: For all raised head styles, the "G" (Grip) dimension is measured to the underside of the head. For the flush head style, the "G" (Grip) dimension is measured to the top of the head.

Stud Grip Callout Grip Length (G)
inch mm
25 .250 6.35
30 .300 7.62
35 .350 8.89
40 .400 10.16
45 .450 11.43
50 .500 12.70
55 .550 13.97
60 .600 15.24
65 .650 16.51
70 .700 17.78
75 .750 19.05
80 .800 20.32

Note: When our existing supply of Cadmium plated parts is exhausted, DFCI Solutions, Inc will no longer offer Cadmium plating as an option.

In place of the Cadmium plating, we recommend:

Clear: Zinc Trivalent Clear .0003 thick. Trivalent Chromate Clear with Sealer (RoHS Compliant)
Specification(s): ASTM-B-633, Type III, SC 2, Clear
Suffix: -Z3CT

Black: Zinc Trivalent Black .0003 thick. Trivalent Chromate Black Dye with Sealer (RoHS Compliant)
Specification(s): ASTM-B-633, Type II, SC 2, Black
Suffix: -Z3BT

Yellow: Zinc Trivalent Yellow .0003 thick, Trivalent Chromate Yellow Dye with Sealer

We recommend the Z3CT finish instead of the Z3YT finish. The Z3CT finish is much more cost effective and provides the same salt spray benefits as the Z3YT finish. (RoHS Compliant)
Specification(s): ASTM-B-633, Type II, SC 2, Yellow
Suffix: -Z3YT

The colored finishes offer no advantage over the clear other than the color, and they are more expensive.