NS202656S-3-4E

View detailed technical data, stock status, and sourcing information for: NS202656S-3-4E
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-01-263-3709

Item Name Code

05280

Assigment Date

09/14/1987 (38 years ago)

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

3b thread class, right-hand thread direction, prevailing torque all metal design locking feature, 0.098 inches minimum and 0.103 inches maximum mounting hole diameter, 0.240 inches minimum nut counterbore diameter

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
Counterbore Diameter: 0.240 inches minimum nut
Mounting Hole Diameter: 0.098 inches minimum and 0.103 inches maximum
Nut Style: plate
Nut Length: 0.995 inches maximum
Nut Height: 0.445 inches maximum
Plate Thickness: 0.035 inches maximum
Plate Width: 0.562 inches maximum
Nut Counterbore Depth: 0.250 inches minimum nut
Nut Mounting Provision: straight holes
Mounting Hole Arrangement Style: 2 holes
Distance From Aperture Center To Mounting Hole Center: 0.339 inches minimum and 0.349 inches maximum
Center To Center Distance Between Mounting Holes Along Length: 0.686 inches minimum and 0.690 inches maximum
Temp Rating: 225.0 fahrenheit maximum
Thread Series: unjf
Thread Quantity Per Inch: 32
Nominal Thread Size: 0.190 inches
Material: iron alloy 660 nut
Material: iron alloy 660 shell
Material: iron alloy 660 washer
Material: rubber butadiene-acrylonitrile class nbr seal
Material Document And Classification: ams 5525 assn std single material response or ams 5737 assn std single material response nut
Material Document And Classification: ams 5525 assn std single material response or ams 5737 assn std single material response shell
Material Document And Classification: ams 5525 assn std single material response or ams 5737 assn std single material response washer
Material Document And Classification: mil-r-6855,grade 60 mil spec single material response seal
Surface Treatment: passivate shell
Surface Treatment: passivate washer
Surface Treatment: silver nut
Surface Treatment Document And Classification: ams 2410 assn std single treatment response nut
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response shell
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response washer

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
NS202656S-3-4E	Plate Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-01-263-3709?

The FSCG of the NSN 5310-01-263-3709 is 5310

Does the NSN 5310-01-263-3709 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-01-263-3709 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 5310-01-263-3709 contain precious materials?

Item contains silver.

Does NSN 5310-01-263-3709 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 5310-01-263-3709 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Mon, Sep 14, 1987