H50737-4

View detailed technical data, stock status, and sourcing information for: H50737-4
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-078-9435

Item Name Code

29729

Assigment Date

06/22/1979 (47 years ago)

A washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. The hole must be 75 percent or less than the largest dimension and the bearing surface finish is greater than 32 microinch (0.8 micrometer). The thickness cannot exceed 25 percent of the largest outside dimension. When the largest outside dimension is less than 1/4 inch or 6mm, the thickness must be 0.006 inches (0.15mm) or greater and for items 1/4 inch (6mm) or larger, the thickness must be 0.016 inches (0.4mm) or greater. The maximum tolerance is applied to dimensions and used as a determining factor. Items with separable lamination use shim. For items fabricated from ceramic or electrically rated materials by specification or industry standards use insulator (1), washer. Excludes:disk, valve, graphite impregnated and lubricated items.

3b thread class, 0.363 inches maximum overall height, 0.491 inches minimum and 0.532 inches maximum washer outside diameter, prevailing torque all metal design locking feature, 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: 0.491 inches minimum and 0.532 inches maximum
Overall Height: 0.363 inches maximum
Nut Style: double hexagon
Washer Thickness: 0.035 inches minimum
Width Across Flats: 0.267 inches minimum and 0.376 inches maximum
Temp Rating: 600.0 fahrenheit maximum
Thread Series: unjf
Thread Quantity Per Inch: 24
Hardness Rating: 48.0 rockwell c maximum
Nominal Thread Size: 0.312 inches
Special Features: dyed blue color no. 15526 fed std 595
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
Precious Material And Location: threads silver
Precious Material: silver
Surface Treatment: passivate overall except threads
Surface Treatment: silver threads
Surface Treatment Document And Classification: ams2410 assn std single treatment response threads
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall except threads

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
642AS0736-4	Extended Washer Self-Locking Nut
77658-524	Extended Washer Self-Locking Nut
H50737-4	Extended Washer Self-Locking Nut
H50737-5	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-078-9435?

The FSCG of the NSN 5310-01-078-9435 is 5310

Does the NSN 5310-01-078-9435 have a Schedule B code assigned?

Yes, the Schedule B code is 7508900000

Does NSN 5310-01-078-9435 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 5310-01-078-9435 contain precious materials?

Item contains silver.

Does NSN 5310-01-078-9435 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 5310-01-078-9435 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Fri, Jun 22, 1979