5340-00-774-4693

Find complete technical information, availability, and procurement data for: 5340-00-774-4693
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5340 Commercial Hardware

National Stock Number

5340-00-774-4693

Item Name Code

29785

Assigment Date

01/01/1963 (63 years ago)

A relatively thin metallic item, having a concave or cupped contour, designed to effect its own seal by compression against the circumference of a hole. It is used as a blowout plug in boilers, engines, and the like to relieve the pressure created by the expansion of fluids caused by heat or freezing.

2.750 inches nominal inside diameter, circular recess cross-sectional shape style, 0.440 inches nominal flange thickness, 3.495 inches minimum and 3.505 inches maximum width, rectangle, eared corners, four holes peripheral shape style

Product Characteristics

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

Cross-Sectional Shape Style: circular recess
Inside Diameter: 2.750 inches nominal
Width: 3.495 inches minimum and 3.505 inches maximum
Flange Thickness: 0.440 inches nominal
Peripheral Shape Style: rectangle, eared corners, four holes
Length: 4.175 inches minimum and 4.185 inches maximum
Body Radius: 2.495 inches minimum and 2.505 inches maximum
Distance Between Holes Along Length: 3.175 inches minimum and 3.185 inches maximum
Distance From First Hole Centerline To End Along Length: 0.500 inches nominal
Distance From First Hole Centerline To End Along Width: 0.500 inches nominal
Inverted Radius: 0.560 inches nominal
Ear Radius: 0.560 inches nominal
Ear Quantity: 4
First Recess Inside Height: 0.190 inches nominal
Inside Corner Radius: 0.380 inches nominal
Body Thickness: 0.250 inches nominal
Securing Device Type: threaded fastener

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
515776	Access Cover
7744692	Access Cover

FAQs

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

What is the FSCG of the NSN 5340-00-774-4693?

The FSCG of the NSN 5340-00-774-4693 is 5340

Does NSN 5340-00-774-4693 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 5340-00-774-4693 contain precious materials?

Precious metal content is unknown

Does NSN 5340-00-774-4693 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5340-00-774-4693 was assigned to the Federal Catalog?

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