74638M624

View detailed technical data, stock status, and sourcing information for: 74638M624
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-059-0259

Item Name Code

04888

Assigment Date

04/06/1978 (48 years ago)

A nut internally threaded from one end, and completely enclosed on the opposite end. The outer periphery parallel to the threaded axis may be square, cylindrical, hexagonal, octagonal, dodecagonal or the like and taper to a cone or dome shape on the closed end. An integral feature is incorporated for locking on the threads of a mating memeber. Excludes:nut (1), stamped.

right-hand thread direction, double hexagon nut style, 3b thread class, 0.649 inches maximum washer outside diameter, 0.350 inches maximum overall height

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
Washer Outside Diameter: 0.649 inches maximum
Overall Height: 0.350 inches maximum
Nut Style: double hexagon
Washer Thickness: 0.065 inches maximum
Width Across Flats: 0.430 inches minimum and 0.439 inches maximum
Temp Rating: 450.0 fahrenheit maximum
Thread Series: unjf
Thread Quantity Per Inch: 24
Hardness Rating: 44.0 rockwell c maximum
Nominal Thread Size: 0.375 inches
Special Features: slotted and molybenum disulfide dry film lubricant after plating
Material: steel comp 8740 or steel overall
Material Document And Classification: ams 6485 assn std 2nd material response or ams 6487 assn std 2nd material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 2 fed spec single treatment response overall

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
74638M624	Nut,plain,extended Washer,double
GN511AA624M	Nut,plain,extended Washer,double

FAQs

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

What is the FSCG of the NSN 5310-01-059-0259?

The FSCG of the NSN 5310-01-059-0259 is 5310

Does the NSN 5310-01-059-0259 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-059-0259 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 5310-01-059-0259 contain precious materials?

Precious metal content is unknown

Does NSN 5310-01-059-0259 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 5310-01-059-0259 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Thu, Apr 6, 1978