36-53950

View detailed technical data, stock status, and sourcing information for: 36-53950
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-550-3503

Item Name Code

14218

Assigment Date

01/01/1961 (65 years ago)

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

40.0 rockwell c minimum and 50.0 rockwell c maximum hardness rating, steel comp 1050 or steel comp 1551 or steel comp 1552 or steel comp 1053 or steel comp 1055 or steel comp 1059 or steel comp 1060 or steel comp 1561 or steel comp 1064 overall material, 0.032 inches minimum and 0.040 inches maximum material thickness, 0.740 inches minimum and 0.760 inches maximum outside diameter, 0.448 inches minimum and 0.464 inches maximum hole diameter

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Hole Diameter: 0.448 inches minimum and 0.464 inches maximum
Outside Diameter: 0.740 inches minimum and 0.760 inches maximum
Material Thickness: 0.032 inches minimum and 0.040 inches maximum
Hardness Rating: 40.0 rockwell c minimum and 50.0 rockwell c maximum
Material: steel comp 1050 or steel comp 1551 or steel comp 1552 or steel comp 1053 or steel comp 1055 or steel comp 1059 or steel comp 1060 or steel comp 1561 or steel comp 1064 overall
Material Document And Classification: 66 fed std all material responses overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,ty 2,cl 3 fed spec single treatment response overall
Style Designator: flat external teeth

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-013-6857	No Name Available	01/01/1960
5310-00-261-7206	No Name Available	06/01/1976
5310-00-261-7350	No Name Available	01/01/1960
5310-00-505-4730	No Name Available	11/01/1981
5310-01-166-0603	No Name Available	08/01/1994

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
10335573	Lock Washer
10512925	Lock Washer
136857	Lock Washer
226478	Lock Washer
36-53950	Lock Washer
5310005503503	Lock Washer
70178-36	Lock Washer
8E07	Lock Washer
AN936B716	Lock Washer
AU27AR-271	Lock Washer
MS35335-36	Lock Washer

FAQs

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

What is the FSCG of the NSN 5310-00-550-3503?

The FSCG of the NSN 5310-00-550-3503 is 5310

Does the NSN 5310-00-550-3503 have a Schedule B code assigned?

Yes, the Schedule B code is 7318210000

Does NSN 5310-00-550-3503 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 5310-00-550-3503 contain precious materials?

Item does not contain precious metal.

Does NSN 5310-00-550-3503 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 5310-00-550-3503 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961