OmniSynk Distribution Services

AS5178-20

Nut, Plain, Hexagon

Part number
AS5178-20
NSN
5310-00-734-5761
NIIN
00-734-5761
Item name
Nut, Plain, Hexagon
Manufacturer
Aeronautical Standards Group
CAGE code
88044
FSC
5310
Unit of issue
EA
DEMIL code
A

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Alternate part numbers

Technical characteristics

Thread Class
3B
Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
0.391 inches minimum and 0.422 inches maximum
Width Across Flats
1.922 inches minimum and 1.954 inches maximum
Thread Series
UN
Thread Quantity per Inch
12
Nominal Thread Size
1.625 inches
Countersink Angle
89.5 degrees minimum nut and 90.5 degrees maximum nut
Bearing Surface Type
Chamfered or washer faced
Material
Steel overall
Surface Treatment
Cadmium overall
Special Test Features
Fleet ballistic missile quality as identified by quality control no. poso 912812
Surface Treatment Document and Classification
QQ-P-416, ty 1, cl 2 fed spec single treatment response overall
Departure from Cited Designator
As modified by special test feature
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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