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FRAGOLA

Fragola AN Bulkhead 90 Degree Fitting 837

Availability:
Ships from Manufacturer
Shipping:
Free Over $98 In U.S. 48
Type:
Bulkhead Adapter Fittings
Material:
Aluminum
Color:
Black
Adapter Attachment:
Male AN
Swivel:
No
Notes:
Sold Individually
$8.99

Description

Fragola AN Bulkhead 90 Degree Fitting 837

Available Sizes: -4 AN to -16 AN

A-N Threads

Use the profiles below to determine the correct A-N thread before ordering. The corresponding chart displays the outer diameter of the metal tube and thread size.

A-N Size Metal Tube O.D. Thread Size
3 3/16″ 3/8-24 UNJF
4 1/4″ 7/16-20 UNJF
6 3/8″ 9/16-18 UNJF
8 1/2″ 3/4-16 UNJF
10 5/8″ 7/8-14 UNJF
12 3/4″ 1 1/16-12 UNJF
16 1″ 1 5/16-12 UNJF
20 1 1/4″ 1 5/8-12 UNJF

Torque Specifications

Many people over tighten the aluminum fitting on the adapter, which distorts the 37 degree seat, and may cause leakage. Both the threads and the seat surface should have a drop or two of oil to smooth the tightening process. The maximum torque specifications are listed here. (An alternate method of tightening is to bring the nut to “hand-tight” and then rotate it another turn with the proper wrench.)

Fitting Size Max. Torque in Foot Pounds
3 8.75
4 11.5
6 16.25
8 29
10 35
12 45
16 70
20 85

Size Chart

A-N Thread Pipe Thread B-Nut Hex
A-N Size Tube Diameter Thread Size (S.A.E.) Pipe Thread Threads Per Inch A-N Size Hex Diameter
-2 1/8″ 5/16-24 1/16″ 27    
-3 3/16″ 3/8-24 1/8″ 27 #3 1/2″
-4 1/4″ 7/16-20 1/4″ 18 #4 9/16″
-6 3/8″ 9/16-18 3/8″ 18 #6 11/16″
-8 1/2″ 3/4-16 1/2″ 14 #8 7/8″
-10 5/8″ 7/8-14 3/4″ 14 #10 1″
-12 3/4″ 1 1/16-12 1″ 11 #12 1 1/4″
-16 1″ 1 5/16-12     #16 1 1/2″
-20 1 1/4″ 1 5/8-12     #20 1 7/8″
-24 1 1/2″ 1 7/8-12        
-28 1 3/4″ 2 1/4-12        
-32 2″ 2 1/2-12
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