74640C8

View detailed technical data, stock status, and sourcing information for: 74640C8
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-317-9021

Item Name Code

01859

Assigment Date

04/08/1990 (36 years ago)

0.250 inches nominal nut height, slotted, hexagon nut style, +0.4675 to 0.4717 inches thread pitch diameters, right-hand thread direction, 3b thread class

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 Pitch Diameters: +0.4675 to 0.4717 inches
Thread Direction: right-hand
Nut Style: slotted, hexagon
Nut Height: 0.250 inches nominal
Width Across Flats: 0.738 inches minimum and 0.752 inches maximum
Thread Series: unjf
Thread Quantity Per Inch: 20
Nominal Thread Size: 0.500 inches
Criticality Code Justification: supp
Bearing Surface Type: chamfered
Special Features: use on f15 nlg critical shear joints procluding use of an320 series
Material: steel corrosion resisting overall
Supplementary Features: item is not csi but has critical features such as heat treatment, surface finish, or material type and special inspection requirements such as magnetic particle insp. or fluorescent penetrant inspection

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
10122195	Nut,plain,slotted,hexagon
74640C8	Nut,plain,slotted,hexagon
E10080-8	Nut,plain,slotted,hexagon
NS-3-C8	Nut,plain,slotted,hexagon
ST3M404C8	Nut,plain,slotted,hexagon

FAQs

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

What is the FSCG of the NSN 5310-01-317-9021?

The FSCG of the NSN 5310-01-317-9021 is 5310

Does the NSN 5310-01-317-9021 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-317-9021 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 5310-01-317-9021 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-317-9021 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 5310-01-317-9021 was assigned to the Federal Catalog?

It was assigned 36 years ago, on Sun, Apr 8, 1990