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These studs ensure permanent mounting in metal sheets as thin as .062 in.

The fastener head is locked securely in a blind, milled hole and is able to handle substantial loads. The concealed-head feature allows the side of the sheet opposite install
Unit of Measure

Thread Size

N/A .112-40 (#4-40)

Thread Code

N/A 440

Length Code

N/A 4

Material Code

N/A C

Min. Sheet Thickness

N/A .062 in

Blind Mounting Hole Diameter + .003 - .000

N/A .172 in
Min. Depth of Blind Hole1 N/A .043 in

L - Length ± .015

N/A .250 in

A Max.

N/A .041 in

E ± .010

N/A .205 in

C Max.

N/A .171 in

Min. Dist. Hole C/L to Edge

N/A .156 in

Max. Hole in Attached Parts

N/A .135 in
For Use in Sheet Hardness2 N/A HRB 70 / HB 125 or Less

Thread Specification

N/A External, ANSI B1.1, 2A

Fastener Material

N/A 300 Series Stainless Steel

Standard Finish

N/A Passivated and/or tested per ASTM A380

CAD Supplier

N/A PennEngineering® (PEM®)
  • 1 Blind holes may be deeper than minimums except where sheet material is at or near minimum thickness. Fasteners should always be installed so the flange is flush with the surface of the sheet.
  • 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.