5310-00-297-3720

Find complete technical information, availability, and procurement data for: 5310-00-297-3720
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5310 Nuts and Washers

National Stock Number

5310-00-297-3720

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.

0.781 inches nominal overall height, 3b thread class, prevailing torque with nonmetallic insert locking feature, 1.240 inches minimum and 1.250 inches maximum washer outside diameter, 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 with nonmetallic insert
Washer Outside Diameter: 1.240 inches minimum and 1.250 inches maximum
Overall Height: 0.781 inches nominal
Nut Style: double hexagon
Washer Thickness: 0.185 inches nominal
Width Across Flats: 0.927 inches minimum and 0.943 inches maximum
Temp Rating: 250.0 fahrenheit nominal
Thread Series: unjf
Thread Quantity Per Inch: 16
Nominal Thread Size: 0.750 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Below is a list of NSNs that have been officially superseded by this NSN: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
5310-00-275-0708	No Name Available	01/01/1961
5310-00-586-0914	No Name Available	01/01/1960
5310-00-596-8161	No Name Available	10/21/1968

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
1129E01 FIND 72	Extended Washer Self-Locking Nut
12NH-12	Extended Washer Self-Locking Nut
386B204012	Extended Washer Self-Locking Nut
612876-8	Extended Washer Self-Locking Nut
69973-8	Extended Washer Self-Locking Nut
761AS152-8	Extended Washer Self-Locking Nut
8461095	Extended Washer Self-Locking Nut
EB1216	Extended Washer Self-Locking Nut
SS5088-12	Extended Washer Self-Locking Nut

FAQs

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

What is the FSCG of the NSN 5310-00-297-3720?

The FSCG of the NSN 5310-00-297-3720 is 5310

Does the NSN 5310-00-297-3720 have a Schedule B code assigned?

Yes, the Schedule B code is 7318160000

Does NSN 5310-00-297-3720 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 5310-00-297-3720 contain precious materials?

Precious metal content is unknown

Does NSN 5310-00-297-3720 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 5310-00-297-3720 was assigned to the Federal Catalog?

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