EB-080

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-297-3721

Item Name Code

29729

Assigment Date

01/01/1963 (63 years ago)

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

prevailing torque with nonmetallic insert locking feature, 3b thread class, right-hand thread direction, 0.865 inches minimum and 0.875 inches maximum washer outside diameter, 0.563 inches nominal overall height

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 with nonmetallic insert
Washer Outside Diameter: 0.865 inches minimum and 0.875 inches maximum
Overall Height: 0.563 inches nominal
Nut Style: double hexagon
Washer Thickness: 0.118 inches nominal
Width Across Flats: 0.612 inches minimum and 0.628 inches maximum
Temp Rating: 250.0 fahrenheit nominal
Thread Series: unjf
Thread Quantity Per Inch: 20
Nominal Thread Size: 0.500 inches
Material: plastic polyamide (nylon) locking insert
Material: steel comp 4130 or steel comp 4340 or steel comp 3140 or steel comp 8740 nut
Material Document And Classification: aisi assn std all material responses nut
Surface Treatment: cadmium overall except insert
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response overall except insert

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5310-00-433-1262	No Name Available	01/01/1963
5310-00-856-3426	No Name Available	01/22/1969
5310-01-453-9208	No Name Available	10/01/2004

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
033534	Extended Washer Self-Locking Nut
035534A	Extended Washer Self-Locking Nut
035534B	Extended Washer Self-Locking Nut
10177803	Extended Washer Self-Locking Nut
1129E01 FIND 76	Extended Washer Self-Locking Nut
12NH-8	Extended Washer Self-Locking Nut
386B204008	Extended Washer Self-Locking Nut
53-60100-5	Extended Washer Self-Locking Nut
608889-11	Extended Washer Self-Locking Nut
9937B402	Extended Washer Self-Locking Nut
DHN 35-8	Extended Washer Self-Locking Nut
DHN35.8	Extended Washer Self-Locking Nut
EAB1402	Extended Washer Self-Locking Nut
EB-080	Extended Washer Self-Locking Nut
EB-820	Extended Washer Self-Locking Nut
EB820	Extended Washer Self-Locking Nut
MBEU141587	Extended Washer Self-Locking Nut
P30364	Extended Washer Self-Locking Nut
SS5088-07	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-297-3721?

The FSCG of the NSN 5310-00-297-3721 is 5310

Does the NSN 5310-00-297-3721 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-297-3721 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 5310-00-297-3721 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-297-3721 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 5310-00-297-3721 was assigned to the Federal Catalog?

It was assigned 63 years ago, on Tue, Jan 1, 1963