Zygology - Floating nuts, locking threads - Type LA4 - Unified

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 retainermore

Floating Self-Clinching Fasteners - Types LA4, LAC, LAS 2

Unit of Measure

Items	LA4-440-1MD Floating self-clinching, locking thread fasteners LA4, LAC, LAS - Unified	LA4-632-1MD Floating self-clinching, locking thread fasteners LA4, LAC, LAS - Unified	LA4-832-1MD Floating self-clinching, locking thread fasteners LA4, LAC, LAS - Unified	LA4-032-1MD Floating self-clinching, locking thread fasteners LA4, LAC, LAS - Unified
Thread Size	N/A .112-40 (#4-40)	N/A .138-32 (#6-32)	N/A .164-32 (#8-32)	N/A .190-32 (#10-32)
Thread Type	N/A Self-Locking
Thread Code	N/A 440	N/A 632	N/A 832	N/A 032
Shank Code	N/A 1
A (Shank) Max.	N/A 0.038 in
Min. Sheet Thickness¹	N/A .038 in
Hole Size in Sheet + .003 - .000	N/A .290 in	N/A .328 in	N/A .368 in	N/A .406 in
C Max.	N/A .289 in	N/A .327 in	N/A .367 in	N/A .405 in
D Max.	N/A .290 in	N/A .335 in	N/A .365 in	N/A .405 in
E ± .015	N/A .360 in	N/A .390 in	N/A .440 in	N/A .470 in
T1 Max.	N/A .130 in	N/A .130 in	N/A .130 in	N/A .170 in
T2 Max.	N/A .190 in	N/A .200 in	N/A .210 in	N/A .270 in
Min. Dist. Hole C/L to Edge	N/A .300 in	N/A .320 in	N/A .34 in	N/A .360 in
Float	N/A .015” minimum, in all directions from center, .030” total
Fastener Material	N/A 400 Series Stainless Steel
Fastener Materials - Retainer	N/A 400 Series Stainless Steel
Fastener Materials - Nut	N/A 300 Series Stainless Steel
Retainer Finish	N/A Passivated and/or tested per ASTM A380
Nut Finish	N/A Black Dry-film Lubricant
For Use in Sheet Hardness²	N/A HRB 88 / HB 183 or Less
Thread Specification	N/A Internal, ANSI B1.1, 2B
CAD Supplier	N/A 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.