AS5178-20

View detailed technical data, stock status, and sourcing information for: AS5178-20
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-734-5761

Item Name Code

01857

Assigment Date

01/01/1963 (63 years ago)

hexagon nut style, 0.391 inches minimum and 0.422 inches maximum nut height, 3b thread class, right-hand thread direction, 1.922 inches minimum and 1.954 inches maximum width across flats

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

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 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

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
AS5178-20	Hexagon Plain Nut

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5310-00-734-5761?

The FSCG of the NSN 5310-00-734-5761 is 5310

Does the NSN 5310-00-734-5761 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-734-5761 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5310-00-734-5761 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-734-5761 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5310-00-734-5761 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963