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AN837-4D

Elbow, Tube to Boss

Part number
AN837-4D
NSN
4730-00-186-9996
NIIN
00-186-9996
Item name
Elbow, Tube to Boss
Manufacturer
Aeronautical Standards Group
CAGE code
88044
FSC
4730
Unit of issue
EA
DEMIL code
A

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Alternate part numbers

Technical characteristics

Thread Class
3A 1ST end bulkhead
Thread Class
3A all ends
End Item Identification
Aircraft application
Connection Style
Flared (tube) all ends
Leg Length
1.531 inches nominal 1ST end
Leg Length
0.703 inches nominal 2ND end
Connection Type
Threaded external tube all ends
Nominal Thread Size
0.438 inches all ends
Nominal Thread Size
0.438 inches 1ST end bulkhead
Seat Angle
37.0 degrees all ends
Flow Angle
45.0 degrees
Nominal Outside Diameter Tube Accommodated
0.250 inches all ends
Material
Aluminum alloy overall
Surface Treatment
Anodize overall
Surface Treatment Document and Classification
MIL-A-8625, ty 2 mil spec single treatment response inside
Surface Treatment Document and Classification
MIL-A-8625, type 2 mil spec single treatment response outside
Thread Series Designator
Unjf 1ST end bulkhead
Thread Series Designator
Unjf all ends
Specification/Standard Data
81343-AS1040D0404 professional/industrial association standard
Catalogue data is compiled from public DLA/FLIS sources and is provided for identification. Availability, condition and certification are confirmed on quotation. OmniSynk Distribution Services is a stocking distributor.

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