A-O Logo A-O Insert

The A-O Series™ is designed to be used in applications requiring close hole to edge applications.

A-O Series™ Threaded Insert

The A-O Series™ Threaded Insert Insert features a reduced profile head design which is similar to the superior A-K Series™ Knurled Threaded Insert. It also has a smaller body diameter than the A-K Series™ Insert. The A-O Insert can be specified when the application design parameters require a smaller hole or closer hole to edge tolerances.

The A-O Insert can be installed with AVK’s ARO brand Pneumatic Tools or AVK’s SPP™ Pneumatic/Hydraulic Tools. These tools can be located at any position on your assembly line. The A-O Insert can be installed either prior to or after finish further enhancing its flexibility in your manufacturing environment.

The A-O Series™ Insert - Part Numbering System

AO (    ) (    ) - (    ) - (    )
Material
Finish
Product
Series
Call
Out
Grade
S Steel 1010/1008
Call
Out
Specification
3T Zinc Trivalent per ASTM-B-633, FE/ZN .0003 (8μ) with Clear Protective Coating
4T Yellow Zinc Trivalent per ASTM-B-633, FE/ZN .0003 (8μ) with Clear Protective Coating
9T Tin Zinc Trivalent per ESP-P-004 .0003 (8μ) with Clear Protective Coating
Thread
Call Out
Grip
Call Out
Sample Part Number:
AOS4T-420-165
* Special order items are subject to minimum order requirements. Contact AVK for details.

The A-O Series™ Insert - Thread Sizes


Thread
Size
Thread
Call Out
Grip
Range
Grip
Call Out
Hole Size
+.006 -.000
HD
±.010
HH
±.003
L
±.015
D
Max.
IL
Max.
6-32 UNC 632 .020-.080 80 1/4 (.250) .295 .018 .385 .249 .315
8-32 UNC 832 .020-.080 80 1/4 (.250) .295 .018 .385 .249 .315
10-24 UNC 1024 .020-.130 130 9/32 (.2912) .320 .020 .440 .280 .330
10-32 UNF 1032 .020-.130 130 9/32 (.2912) .320 .020 .440 .280 .330
1/4-20 UNC 420 .030-.165 165 3/8 (.375) .425 .022 .580 .374 .440
5/16-18 UNC 518 .040-.200 200 1/2 (.500) .560 .022 .690 .499 .540
3/8-16 UNC 616 .040-.200 200 1/2 (.500) .560 .022 .690 .499 .540
 
Thread
Size
Thread
Call Out
Grip
Range
Grip
Call Out
Hole Size
+0,15 -0,00
HD
±0,25
HH
±0,08
L
±0,38
D
Max.
IL
Max.
M4x0,7 ISO 470 0,50-2,00 2.0 6,4 7,49 0,46 9,78 6,32 8,00
M5x0,8 ISO 580 0,50-3,30 3.3 7,2 8,13 0,51 11,18 7,11 8,38
M6x1,0 ISO 610 0,76-4,20 4.2 9,6 10,80 0,56 14,73 9,50 11,18
M8x1,25 ISO 8125 1,02-5,10 5.1 12,7 14,22 0,56 17,53 12,67 13,72
M10x1,5 ISO 1015 1,02-5,10 5.1 12,7 14,22 0,56 17,53 12,67 13,72

NOTE 1: Grip range can be affected by parent material density and actual hole size.
AVK suggests trial installations to determine optimum grip.
NOTE 2: Additional UNF fine thread materials are available. Contact AVK for details.
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