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Locking and Non-locking Threads
These fasteners provide load-bearing threads in thin sheets and permit up to .030” adjustment for mating hole misalignment.

The self-clinching feature offers fast and simple assembly. The fasteners are squeezed into prepared holes using any standard press. The sheet remains flush on one side, and the fastener is permanently locked in place.

Extra strength and support in assembly is obtained by the threads of the floating nut extending fully into the retainer
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Unit of Measure

Specifications

Thread Size

.112-40 (#4-40)

Thread Type

Self-Locking a1369.jpg

Thread Code

440

Shank Code

1

A (Shank) Max.

0.038 in a1368.jpg
Min. Sheet Thickness1 .038 in

Hole Size in Sheet + .003 - .000

.290 in

C Max.

.289 in

D Max.

.290 in

E ± .015

.360 in

T1 Max.

.130 in

T2 Max.

.190 in

Min. Dist. Hole C/L to Edge

.300 in

Float

.015” minimum, in all directions from center, .030” total

Fastener Material

400 Series Stainless Steel

Fastener Materials - Retainer

400 Series Stainless Steel

Fastener Materials - Nut

300 Series Stainless Steel

Retainer Finish

Passivated and/or tested per ASTM A380

Nut Finish

Black Dry-film Lubricant
For Use in Sheet Hardness2 HRB 88 / HB 183 or Less

Thread Specification

Internal, ANSI B1.1, 2B

CAD Supplier

PennEngineering® (PEM®)
  • 1 For maximum performance, we recommend that you use the maximum shank length for your sheet thickness.
  • 2 HRB - Hardness Rockwell “B” Scale. HB - Hardness Brinell.