AVK Fasteners

A-L Seriesâ„¢ Knurled Threaded Insert

A-L Series Insert

The A-L Series™ Insert is AVK’s most versatile product that can be installed into drilled or punched holes in most any material.

The A-L Series™ Knurled Threaded Insert features a knurled body and large diameter-low profile head making it ideal for use in punched or drilled holes. It offers the highest all around strength characteristics and has been designed to be used with Grade 5 or Metric 8.8/9.8 mating screws. The A-L Insert is AVK’s most versatile performer.

The A-L Insert can be installed using 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-L Insert can be installed either before or after finish.

  • EXCEPTIONAL TORQUE STRENGTH is achieved as the insert’s knurled body expands FILLING THE HOLE.
  • QUALITY INSTALLATIONS even invariable thickness materials are assured by AVK’s spin/spin ARO Pneumatic Tools and our SPPâ„¢ Pneumatic/Hydraulic Tools.
  • SUPERIOR THREAD STRENGTH is provided due to our internal rolled thread manufacturing process.
  • THREADS GAUGE before and after installation due to the increased cross-sectional thickness of the threaded area. Thread dilation is prevented.
  • INVENTORY REDUCTION is possible because of the A-L Series’™ wide grip range capacity. It is 2.5 times greater than conventional rivet nuts.
  • CORROSION RESISTANCE is provided by our standard zinc/yellow trivalent finish (120 hours. salt spray to white corrosion). For exceptional corrosion protection we offer a trivalent tin/zinc alloy finish.
  • AVAILABLE in steel. Additional materials such as aluminum, brass and monel are available by special order. Contact AVK for details.
Open End
Open End

The open end AL-Series™ is AVK’s most versatile product.

Closed End
Closed End

Thread area is enclosed eliminating leakage past the threads from either side of the application.

Sealed Head
Sealed Head

PVC foam seal is bonded to the underside of the head and when installed provides a weathertight seal. (Also available in closed end version.)

Wedge Head
Wedge Head

The addition of wedges under the head provides even greater torque capability, especially in soft or thin materials, and is excellent for electrical grounding applications.

Step 1

The operator 1/4 turns the AVK fastener on to the tool mandrel and places it into the hole. Operator 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:

The operator can install 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.

Sample Part Number
ALS3T-420-165
AL (    ) (    ) - (    ) - (    ) (    )
 
Material
Finish
   
Type
Product
Series
Call
Out		 Grade
S Steel 1010/1008
A Aluminum 5056
B Brass 270/260
M Monel 400
C CRES 302
Call
Out		 Specification
3T Zinc Trivalent per ASTM-B-633, FE/ZN .0003 (8μ) with Clear Protective Coating
4T Yellow Zinc Trivanent 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
Call
Out		 Type
blank Open End
B Closed End
S Sealed Head
W Wedge Head

* Special order items are subject to minimum order requirements. Contact AVK for details.

THE A-L SERIESâ„¢ INSERT - THREAD SIZES - STANDARD HEAD
AL Series Standard Head
Thread
Size		Thread
Call
Out		Grip
Range		Grip
Call
Out		Hole Size
+.006
-.000		HD
±.010
±0.25*		HH
±.003		L
±.015		D
Max.		IL
Max.		LB
±.015		ILB
Max		IATD*
Max.
6-32 UNC 632 .020-.080 80 17/64 (.2656) .390 .030 .420 .265 .305 .740 .640 .610
6-32 UNC 632 .080-.130 130 17/64 (.2656) .390 .030 .470 .265 .305 .740 .580 .670
8-32 UNC 832 .020-.080 80 17/64 (.2656) .390 .030 .420 .265 .305 .740 .640 .610
8-32 UNC 832 .080-.130 130 17/64 (.2656) .390 .030 .470 .265 .305 .740 .580 .670
10-24 UNC 1024 .020-.130 130 19/64 (.2969) .415 .030 .475 .296 .315 .990 .845 .730
10-24 UNC 1024 .130-.225 225 19/64 (.2969) .415 .030 .585 .296 .315 .990 .735 .840
10-32 UNF 1032 .020-.130 130 19/64 (.2969) .415 .030 .475 .296 .315 .990 .845 .730
10-32 UNF 1032 .130-.225 225 19/64 (.2969) .415 .030 .585 .296 .315 .990 .735 .840
1/4-20 UNC 420 .027-.165 165 25/64 (.3906) .500 .030 .580 .390 .380 1.190 1.005 .895
1/4-20 UNC 420 .165-.260 260 25/64 (.3906) .500 .030 .680 .390 .380 1.190 .905 1.035
5/16-18 UNC 518 .027-.150 150 17/32 (.5312) .685* .035 .690 .530 .470 1.390 1.175 .995
5/16-18 UNC 518 .150-.312 312 17/32 (.5312) .685* .035 .805 .530 .425 1.390 1.025 1.120
3/8-16 UNC 616 .027-.150 150 17/32 (.5312) .685* .035 .690 .530 .470 1.390 1.175 .995
3/8-16 UNC 616 .150-.312 312 17/32 (.5312) .685* .035 .805 .530 .425 1.390 1.025 1.120
1/2-13 UNC 813 .063-.200 200 11/16 (.6875) .865* .047 1.150 .685 .850 2.365 2.070 1.505
1/2-13 UNC 813 .200-.350 350 11/16 (.6875) .865* .047 1.300 .685 .850 2.365 1.920 1.505
1/2-13 UNC 813 .350-.500 500 11/16 (.6875) .865* .047 1.450 .685 .860 2.365 1.770 1.505
Metric Sizes - STANDARD HEAD
Thread
Size		Thread
Call
Out		Grip
Range		Grip
Call
Out		Hole Size
+0,15
-0,00		HD
±0,25
±0,64*		HH
±0,08		L
±0,38		D
Max.		IL
Max.		LB
±0,38		ILB
Max		IATD*
Max.
M4 x 0,7 ISO 470 0,50-2,00 2.0 6,75 9,91 0,76 10,67 6,73 7,75 18,80 16,26 15,49
M4 x 0,7 ISO 470 2,00-3,30 3.3 6,75 9,91 0,76 11,94 6,73 7,75 18,80 14,73 17,02
M5 x 0,8 ISO 580 0,50-3,30 3.3 7,60 10,54 0,76 12,07 7,52 8,00 25,15 21,46 18,54
M5 x 0,8 ISO 580 3,30-5,70 5.7 7,60 10,54 0,76 14,86 7,52 8,00 25,15 18,67 21,34
M6 x 1,0 ISO 610 0,70-4,20 4.2 10,00 12,70 0,76 14,73 9,91 9,65 30,23 25,53 22,73
M6 x 1,0 ISO 610 4,20-6,60 6.6 10,00 12,70 0,76 17,27 9,91 9,65 30,23 22,99 26,29
M8 x 1,25 ISO 8125 0,70-3,80 3.8 13,50 17,40* 0,89 17,53 13,46 11,94 35,31 29,85 25,27
M8 x 1,25 ISO 8125 3,80-7,90 7.9 13,50 17,40* 0,89 20,45 13,46 10,80 35,31 26,04 28,45
M10 x 1,5 ISO 1015 0,70-3,80 3.8 13,50 17,40* 0,89 17,53 13,46 11,94 35,31 29,85 25,27
M10 x 1,5 ISO 1015 3,80-7,90 7.9 13,50 17,40* 0,89 20,45 13,46 10,80 35,31 26,04 28,45
M12 x 1,75 ISO 12175 1,60-5,10 5.1 17,45 21,97* 1,19 29,21 17,4 21,59 60,07 52,58 38,23
M12 x 1,75 ISO 12175 5,10-8,90 8.9 17,45 21,97* 1,19 33,02 17,4 21,59 60,07 48,77 38,23
M12 x 1,75 ISO 12175 8,90-12,7 12.7 17,45 21,97* 1,19 36,83 17,4 21,84 60,07 44,96 38,23
  • 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 threads are available. Contact AVK for details.
  • NOTE 3: Additional grip lengths are available. Contact AVK for details.
  • *Dimensions in minimum grip condition.
THE A-L SERIESâ„¢ INSERT - THREAD SIZES - SEALED HEAD
AL Series Sealed Head
Thread
Size		Thread
Call
Out		Grip
Range		Grip
Call
Out		Hole Size
+.006
-.000		HD
±.010
±0.25*		HH
±.003		L
±.015		D
Max.		IL
Max.		LB
±.015		ILB
Max		IATD*
Max.
6-32 UNC 632 .020-.060 80 17/64 (.2656) .390 .030 .420 .265 .305 .740 .640 .610
6-32 UNC 632 .060-.100 130 17/64 (.2656) .390 .030 .470 .265 .305 .740 .580 .670
8-32 UNC 832 .020-.060 80 17/64 (.2656) .390 .030 .420 .265 .305 .740 .640 .610
8-32 UNC 832 .060-.100 130 17/64 (.2656) .390 .030 .470 .265 .305 .740 .580 .670
10-24 UNC 1024 .020-.100 130 19/64 (.2969) .415 .030 .475 .296 .315 .990 .845 .730
10-24 UNC 1024 .100-.175 225 19/64 (.2969) .415 .030 .585 .296 .315 .990 .735 .840
10-32 UNF 1032 .020-.100 130 19/64 (.2969) .415 .030 .475 .296 .315 .990 .845 .730
10-32 UNF 1032 .100-.175 225 19/64 (.2969) .415 .030 .585 .296 .315 .990 .735 .840
1/4-20 UNC 420 .027-.125 165 25/64 (.3906) .500 .030 .580 .390 .380 1.190 1.005 .895
1/4-20 UNC 420 .125-.195 260 25/64 (.3906) .500 .030 .680 .390 .380 1.190 .905 1.035
5/16-18 UNC 518 .027-.115 150 17/32 (.5312) .685* .035 .690 .530 .470 1.390 1.175 .995
5/16-18 UNC 518 .115-.250 312 17/32 (.5312) .685* .035 .805 .530 .425 1.390 1.025 1.120
3/8-16 UNC 616 .027-.115 150 17/32 (.5312) .685* .035 .690 .530 .470 1.390 1.175 .995
3/8-16 UNC 616 .115-.250 312 17/32 (.5312) .685* .035 .805 .530 .425 1.390 1.025 1.120
1/2-13 UNC 813 .063-.150 200 11/16 (.6875) .865* .047 1.150 .685 .850 2.365 2.070 1.505
1/2-13 UNC 813 .150-.280 350 11/16 (.6875) .865* .047 1.300 .685 .850 2.365 1.920 1.505
1/2-13 UNC 813 .280-.400 500 11/16 (.6875) .865* .047 1.450 .685 .860 2.365 1.770 1.505
METRIC SIZES - SEALED HEAD
Thread
Size		Thread
Call
Out		Grip
Range		Grip
Call
Out		Hole Size
+0,15
-0,00		HD
±0,25
±0,64*		HH
±0,08		L
±0,38		D
Max.		IL
Max.		LB
±0,38		ILB
Max		IATD*
Max.
M4 x 0,7 ISO 470 0,50-1,52 2.0 6,75 9,91 0,76 10,67 6,73 7,75 18,80 16,26 15,49
M4 x 0,7 ISO 470 1,52-2,54 3.3 6,75 9,91 0,76 11,94 6,73 7,75 18,80 14,73 17,02
M5 x 0,8 ISO 580 0,50-2,54 3.3 7,60 10,54 0,76 12,07 7,52 8,00 25,15 21,46 18,54
M5 x 0,8 ISO 580 2,54-4,45 5.7 7,60 10,54 0,76 14,86 7,52 8,00 25,15 18,67 21,34
M6 x 1,0 ISO 610 0,70-3,17 4.2 10,00 12,70 0,76 14,73 9,91 9,65 30,23 25,53 22,73
M6 x 1,0 ISO 610 3,17-4,95 6.6 10,00 12,70 0,76 17,27 9,91 9,65 30,23 22,99 26,29
M8 x 1,25 ISO 8125 0,70-2,92 3.8 13,50 17,40* 0,89 17,53 13,46 11,94 35,31 29,85 25,27
M8 x 1,25 ISO 8125 2,92-6,35 7.9 13,50 17,40* 0,89 20,45 13,46 10,80 35,31 26,04 28,45
M10 x 1,5 ISO 1015 0,70-2,92 3.8 13,50 17,40* 0,89 17,53 13,46 11,94 35,31 29,85 25,27
M10 x 1,5 ISO 1015 2,92-6,35 7.9 13,50 17,40* 0,89 20,45 13,46 10,80 35,31 26,04 28,45
M12 x 1,75 ISO 12175 1,60-3,81 5.1 17,45 21,97* 1,19 29,21 17,4 21,59 60,07 52,58 38,23
M12 x 1,75 ISO 12175 3,81-7,11 8.9 17,45 21,97* 1,19 33,02 17,4 21,59 60,07 48,77 38,23
M12 x 1,75 ISO 12175 7,11-10,16 12.7 17,45 21,97* 1,19 36,83 17,4 21,84 60,07 44,96 38,23
  • 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.
  • NOTE 3: The A-L Series shown on this page incorporates an underhead seal which reduces the standard grip range of the part based on the seal thickness. The grip call out remains based on the standard part for part numbering simplicity.
  • NOTE 4: The PVC foam seal is not recommended for use with petroleum based liquids.
  • * Dimensions in minimum grip condition.
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