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A-R Logo A-R Insert
The A-R Series™ has a very wide grip range and with its four high load bearing "legs" is excellent for use in plastics or thin sheet metals.

A-R Series™ Threaded Insert has been designed for use in plastics and thin gauge sheet metal applications where increased pull-out resistance is required.

The A-R Insert features a PreSet™ slotted body design that when installed folds into four segments gripping the backside of the parent material. This design feature allows the A-R Insert to be installed into single, variable or multiple thickness materials using AVK’s ARO torque-stall Pneumatic Tools or AVK’s SPP™ Pneumatic/Hydraulic Tools.

The A-R Series™ Insert - Design Benefits

Increased pull out in plastics and thin sheet metal.
Installs into variable thickness materials without tool adjustment.
Internal rolled threads make the A-R Series™ compatible with Grade 5 or Metric Class 8.8/9.8 screws.
All surfaces are plated for superior corrosion resistance.

A-R Series™ PreSet™ Design
HOW IT WORKS FOR YOU
The Preset™ slightly expanded slotted body design of the A-R Series™ enables it to be installed using torque type tools. Hand or pneumatic torque tools will install the A-R Series™ in single, variable or multiple thickness materials.

The A-R Series™ Insert - Installation Steps & Video

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Step 1
The operator 1/4 turns the AVK fastener on to the tool mandrel and places it into the hole. He then presses the top trigger on the tool and the AVK part installs.

Step 2
Once hole fill is complete the AVK fastener forms its backside flange behind the parent material and the tool stalls.

Step 3
The operator reverses the tool and proceeds to attach the mating component using the appropriate mating hardware. The entire installation sequence of the AVK fastener takes 3 seconds or less.

Notes:
In this demo video the operator is installing the AVK fastener into two different material thickness’. This is the key benefit of the AVK System. You are able to install our products into single, variable or multiple thickness materials without tool adjustment.

During installation the AVK fastener expands within the hole Filling The Hole. This assures excellent spin out resistance and is a feature unique to AVK fasteners.

AVK fasteners are designed to be installed right on your assembly line either before or after paint or finish is applied to your product. This saves space and improves process flow.

The A-R Series™ Insert - Various Design Types

A-R STUDS

An A-R blind side, petaled footprint produces exceptional pull-out combined with a stud for component attachment.

SPECIAL HEAD DESIGNS

Special head configurations such as square or wedge head can increase the inserts holding resistance in the parent material.

STRAIGHT BODY DESIGN

A straight body A-R Series™ insert is ideal for thin sheet metals, tubing & plastic applications where high pull-out is required.

The A-R Series™ Insert - Part Numbering System

AR (    ) (    ) - (    ) - (    )
Material
Finish
Product
Series
Call
Out 		Grade
S Steel 1010/1008
Call
Out 		Specification
4 Steel - Zinc/Yellow Dichromate per ASTM-B-633 Type II FE/ZN .0003 (8μ) with Clear Protective Coating
* By Special Order
9 Steel - Yellow Tin Zinc per BPS-TZ-327 .0003 (8μ) with Clear Protective Coating
Thread
Call Out
Grip
Call Out
Sample Part Number:
ARS4-420-280
* Special order items are subject to minimum order requirements. Contact AVK for details.

The A-R Series™ Insert - Thread Sizes


Unified (Inch) and Metric Thread Sizes
Thread
Size		 Thread
Call Out		 Grip
Range		 Grip
Call Out		 Hole
Size		 HD HH L D IL
Max.		 Grip
ID Mark
1/4-20 UNC 420 .020-.280 280 .390
.396		 .645
.610		 .063
.053		 1.015
.985		 .382
.368		 .520 Blank
1/4-20 UNC 420 .280-.500 500 .390
.396		 .645
.610		 .063
.053		 1.249
1.219		 .382
.368		 .520 1 Rad
5/16-18 UNC 518 .020-.280 280 .500
.506		 .770
.740		 .067
.057		 1.156
1.126		 .495
.490		 .775 Blank
5/16-18 UNC 518 .280-.500 500 .500
.506		 .770
.740		 .067
.057		 1.390
1.360		 .495
.490		 .775 1 Rad
3/8-16 UNC 616 .020-.280 280 .594
.600		 .865
.895		 .083
.093		 1.205
1.233		 .582
.587		 .775 Blank
M6x1,0 ISO 610 0,5-7,1 7.1 10,00
10,15		 16,38
15,49		 1,60
1,35		 25,78
25,02		 9,8
9,35		 13,21 Blank
M6x1,0 ISO 610 7,1-12,7 12.7 10,00
10,15		 16,38
15,49		 1,60
1,35		 31,72
30,96		 9,8
9,35		 13,21 1 Rad
M8x1,25 ISO 8125 0,5-7,1 7.1 12,70
12,85		 19,56
18,80		 1,70
1,45		 29,63
28.60		 12,57
12,47		 19,69 Blank
M8x1,25 ISO 8125 7,1-12,7 12.7 12,70
12,85		 19,56
18,80		 1,70
1,45		 35,31
34.54		 12,57
12,47		 19,69 1 Rad
M10x1,5 ISO 1015 0,5-7,1 7.1 15,09
15,24		 22,73
21,97		 2,36
2,11		 31,32
30.61		 14,91
14,78		 19,69 Blank

NOTE 1: Grip range stated in the dimensional chart above can be achieved using pull type installation tools and may be variable based on hole size and parent material density. AVK recommends trial installations to determine actual grip range in the application.
NOTE 2: Grip ranges will be less than stated above when using torque type installation tools. Grip range will be affected by the tool RPM speed, stall torque, hole size and parent material density. AVK recommends trial installations to determine actual grip. See page 33 for torque tool selection guidelines.