78686-9

View detailed technical data, stock status, and sourcing information for: 78686-9
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-138-3258

Item Name Code

36744

Assigment Date

09/10/1982 (43 years ago)

A thin flat metal or plastic item of various peripheral shapes having a solid or laminated cross-section. It is designed to maintain a predetermined distance between two surfaces. For round items without a hole and having a solid rectangular cross-section use disk, solid, plain. Items with either (1) a solid (not laminated) cross-section, or (2) a non-separable laminated cross-section with one hole centrally located, must have a thickness less than 0.006 inch (0.152 mm) for items less than 1/4 inch (6.35 mm) outside diameter or shortest distance across peripheral flats, and less than 0.016 inch (0.406 mm) for items 1/4 inch (6.35 mm) or more outside diameter, or shortest distance across peripheral flats. For items with thickness greater than those indicated above, see spacer, plate; washer, flat and spacer, ring. When thickness and/or outside diameter or shortest distance across peripheral flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance. See also shim stock, laminated; shim stock assortment, gasket; and bearing, washer, thrust.

prevailing torque all metal design locking feature, dry film lubricant lubrication, 0.982 inches maximum washer outside diameter, 3b thread class, right-hand thread direction

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: 0.982 inches maximum
Lubrication: dry film lubricant
Overall Height: 0.562 inches maximum
Nut Style: spline drive
Drive Point Quantity: 12
Washer Thickness: 0.095 inches minimum
Thread Series: unjf
Thread Quantity Per Inch: 18
Nominal Thread Size: 0.562 inches
Material: nickel alloy 718 overall
Material Document And Classification: ams 5662 assn std single material response or ams 5663 assn std single material 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
10109755	Extended Washer Self-Locking Nut
3036AS175-1	Extended Washer Self-Locking Nut
78686-9	Extended Washer Self-Locking Nut
94435-918	Extended Washer Self-Locking Nut
BH752-9	Extended Washer Self-Locking Nut
H50609-9	Extended Washer Self-Locking Nut
H54630-9	Extended Washer Self-Locking Nut
LH12038-9	Extended Washer Self-Locking Nut
ST3M752-9	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-138-3258?

The FSCG of the NSN 5310-01-138-3258 is 5310

Does the NSN 5310-01-138-3258 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5310-01-138-3258 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 5310-01-138-3258 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-01-138-3258 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 5310-01-138-3258 was assigned to the Federal Catalog?

It was assigned 43 years ago, on Fri, Sep 10, 1982