78456-624

View detailed technical data, stock status, and sourcing information for: 78456-624
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-246-8451

Item Name Code

29730

Assigment Date

12/19/1986 (39 years ago)

A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.

0.577 inches minimum washer outside diameter, 0.417 inches minimum and 0.424 inches maximum nut counterbore diameter, 3b thread class, right-hand thread direction, prevailing torque all metal design locking feature

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
Locking Feature: prevailing torque all metal design
Washer Outside Diameter: 0.577 inches minimum
Counterbore Diameter: 0.417 inches minimum and 0.424 inches maximum nut
Overall Height: 0.490 inches maximum
Nut Style: hexagon
Nut Counterbore Depth: 0.200 inches minimum and 0.210 inches maximum nut
Width Across Flats: 0.430 inches minimum and 0.439 inches maximum
Temp Rating: 232.0 celsius nominal
Thread Series: unjf
Thread Quantity Per Inch: 24
Hardness Rating: 39.0 rockwell c minimum and 43.0 rockwell c maximum
Nominal Thread Size: 0.375 inches
Material: steel comp 8740 and steel comp 4037 overall
Material Document And Classification: ams 6322 assn std 1st material response or ams 6300 assn std 2nd material response overall
Surface Treatment: tin overall
Surface Treatment Document And Classification: mil-t-10727,ty1,clb mil 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
78456-624	Extended Washer Self-Locking Nut
GN512JG6	Extended Washer Self-Locking Nut
H50437-6	Extended Washer Self-Locking Nut
N11-6	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-246-8451?

The FSCG of the NSN 5310-01-246-8451 is 5310

Does the NSN 5310-01-246-8451 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-246-8451 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 5310-01-246-8451 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-246-8451 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 5310-01-246-8451 was assigned to the Federal Catalog?

It was assigned 39 years ago, on Fri, Dec 19, 1986