5342-00-579-1940

Find complete technical information, availability, and procurement data for: 5342-00-579-1940
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5342 Weapon System Hardware

National Stock Number

5342-00-579-1940

Item Name Code

20319

Assigment Date

01/31/1968 (58 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

40.0 included angle in deg, 3.970 inches nominal inside diameter, single latch style, 0.050 inches nominal retainer thickness, grooved retainer cross-sectional 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: grooved retainer
Inside Diameter: 3.970 inches nominal
Retainer Thickness: 0.050 inches nominal
Latch Style: single
Included Angle In Deg: 40.0
Nut Type: self-locking hexagon
Segment Quantity: 2
Sealing Inner Liner: not included
Retainer Width: 0.625 inches nominal
Root Width: 0.262 inches nominal
Band Thickness: 0.032 inches nominal
Band Width: 0.750 inches nominal
Drilled Lockwire Hole: not included
Height: 0.141 inches nominal
Material: steel bolt
Material: steel corrosion resisting band
Material: steel corrosion resisting segment
Material: steel nut
Shape: round

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
320-117	Grooved Clamp Coupling
5321C397S	Grooved Clamp Coupling

FAQs

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

What is the FSCG of the NSN 5342-00-579-1940?

The FSCG of the NSN 5342-00-579-1940 is 5342

Does the NSN 5342-00-579-1940 have a Schedule B code assigned?

Yes, the Schedule B code is 9803200000

Does NSN 5342-00-579-1940 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 5342-00-579-1940 contain precious materials?

Precious metal content is unknown

Does NSN 5342-00-579-1940 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 5342-00-579-1940 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Wed, Jan 31, 1968