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A4-832-1

SKU A4-832-1 Category Tag

Floating Self-Clinching Fasteners A4, AS, AC

Locking and Non-locking ThreadsThese 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 shank (a unique PEM feature). A self-locking version of the fastener is also offered. Thread locking torque performance is equivalent to applicable NASM25027 specifications.

Non-locking Type A4 and self-locking Type LA4 fasteners provide load-bearing threads in stainless steel sheets as thin as .038” with hardness up to HRB 88 on the Rockwell “B” scale.

Many PEM Type AS and AC self-clinching floating fasteners correspond to sizes in US NASM45938/11 specifications. Check our web site for a complete Military Specification and National Aerospace Standards Reference Guide (Bulletin NASM).

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Weight 1.432 kg
Thread Code

Thread Size

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Thread Specification

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Shank Code

Fastener Material

Fastener Materials – Nut

For Use in Sheet Hardness

Float

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Product Category

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CAD Supplier

CADPartID

Thread Type

Application Type

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Base Panel Material

Brand

Fastener Characteristics

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Industry

PEM Product Family

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Product Type

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Unit (Metric/Unified)

A Shank Max

E ± .015_in

Min. Sheet Thickness_in

C Max._in

D Max._in

T1 Max._in

THREAD CODE 832
THREAD SIZE .164-32 (#8-32), #8-32
THREAD SPECIFICATION 2B, ANSI B1.1, Internal
SHANK CODE 1
FASTENER MATERIAL 400 Series Stainless Steel
FASTENER MATERIALS – NUT 300 Series Stainless Steel
FASTENER MATERIALS – RETAINER 400 Series Stainless Steel
STANDARD FINISH – RETAINER & NUT Passivated and/or tested per ASTM A380
FOR USE IN SHEET HARDNESS HRB 88 / HB 183 or Less
FLOAT .015” minimum, in all directions from center, .030” total
PRODUCT CATEGORY Floating Self-Clinching Fasteners A4, AS, AC
CAD SUPPLIER PennEngineering® (PEM®)
CADPARTID 103680
THREAD TYPE Non-Locking
APPLICATION TYPE Industrial, Manufacturing & Sheet Metal Fabrication
BASE PANEL MATERIAL Stainless Steel
BRAND PEM
FASTENER CHARACTERISTICS Floating, Non-Locking
INDUSTRY Industrial & Commercial
INSTALLATION EQUIPMENT/METHOD C-Frame Automatic Feed, C-Frame Manual Feed
PEM PRODUCT FAMILY ALA, SS
PRODUCT TYPE Nuts
TECHNOLOGY TYPE Self-Clinching
UNIT (METRIC/UNIFIED) Unified
A SHANK MAX 0.038in
E ± .015_IN .440in
HOLE SIZE IN SHEET + .003 – .000_IN .368in
MIN. DIST. HOLE C/L TO EDGE_IN .34in
MIN. SHEET THICKNESS_IN .038in
C MAX._IN .367in
D MAX._IN .365in
T1 MAX._IN .130in

Resources

Installation & Performance Data

ala-a4-la4-unified
TYPE THREAD CODE TEST SHEET MATERIAL INSTALLATION (lbs.) RETAINER PUSHOUT (lbs.) RETAINER TORQUE-OUT (in. lbs.)
A4, LA4 832 300 Series Stainless Steel 12000 200 85
ss-a4-la4-nuts-unified
TYPE THREAD CODE TEST SHEET MATERIAL INSTALLATION (lbs.) RETAINER PUSHOUT (lbs.) RETAINER TORQUE-OUT (in. lbs.)
A4, LA4 832 300 Series Stainless Steel 12000 200 85