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5310-01-131-5491

Find complete technical information, availability, and procurement data for: 5310-01-131-5491

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5310-01-131-5491
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5310 Nuts and Washers
National Stock Number
5310-01-131-5491
Item Name Code
15893
Assigment Date
05/12/1982 (44 years ago)

An item having two flat bearing surfaces, conforming to the same shape as the base of a nut (1), plain, plate and nut (1), self-locking, plate. It is used to provide better alignment in assembly.

0.509 inches minimum and 0.513 inches maximum pilot diameter, prevailing torque all metal design or prevailing torque with nonmetallic insert locking feature, right-hand thread direction, 0.173 inches minimum and 0.203 inches maximum pilot length, 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 Direction
right-hand
Locking Feature
prevailing torque all metal design or prevailing torque with nonmetallic insert
Pilot Diameter
0.509 inches minimum and 0.513 inches maximum
Pilot Length
0.173 inches minimum and 0.203 inches maximum
Lubrication
dry film lubricant
Nut Style
spline
Nut Diameter
0.235 inches minimum and 0.265 inches maximum
Nut Height
0.469 inches nominal
Temp Rating
250.0 fahrenheit maximum
Thread Series
unf
Thread Quantity Per Inch
24
Hardness Rating
28.0 rockwell c maximum
Nominal Thread Size
0.375 inches
Special Features
optional hex style,0.688 in. width across flat,optional nylon locking insert
Material
steel overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416,type 2 class 3 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
MS51866-35 Spline Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-131-5491?
The FSCG of the NSN 5310-01-131-5491 is 5310
Does the NSN 5310-01-131-5491 have a Schedule B code assigned?
Yes, the Schedule B code is 7318160000
Does NSN 5310-01-131-5491 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 5310-01-131-5491 contain precious materials?
Item does not contain precious metal.
Does NSN 5310-01-131-5491 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 5310-01-131-5491 was assigned to the Federal Catalog?
It was assigned 44 years ago, on Wed, May 12, 1982

Professional Distribution

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Pricing

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ITAR Registered

In Stock

This item is currently available and ready for prompt shipment. Units may be offered in various conditions — new, surplus, or refurbished — and stored at verified global facilities. Request a quote to confirm current stock and delivery time.

New Surplus 304
New Material 146
Total 450
Availability of this item was last updated on: 12/23/2025 11:12 AM EST. Stock levels and pricing are subject to change.

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