158187

View detailed technical data, stock status, and sourcing information for: 158187
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-297-8359

Item Name Code

01852

Assigment Date

01/01/1963 (63 years ago)

right-hand thread direction, 0.280 inches minimum and 0.290 inches maximum head diameter, 2a thread class, 0.734 inches minimum and 0.736 inches maximum fastener length, 0.625 inches minimum and 0.688 inches maximum thread length

Product Characteristics

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

Thread Class: 2a
Thread Direction: right-hand
Thread Length: 0.625 inches minimum and 0.688 inches maximum
Fastener Length: 0.734 inches minimum and 0.736 inches maximum
Head Diameter: 0.280 inches minimum and 0.290 inches maximum
Head Height: 0.165 inches minimum and 0.185 inches maximum
Extended Washer Diameter: 0.360 inches minimum and 0.380 inches maximum
Extended Washer Thickness: 0.043 inches minimum and 0.053 inches maximum
First Diameter From Head: 0.155 inches minimum and 0.165 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.078 inches minimum and 0.109 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 24
Hardness Rating: 32.0 rockwell c minimum and 38.0 rockwell c maximum overall
Externally Relieved Body Diameter Quantity: 1
Material: steel comp 8740 overall
Material Document And Classification: ams 6322 assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: ams 2400 assn std single treatment response overall
Thread Series Designator: unc

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
158187	Externally Relieved Body Screw
EAB1719	Externally Relieved Body Screw

FAQs

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

What is the FSCG of the NSN 5305-00-297-8359?

The FSCG of the NSN 5305-00-297-8359 is 5305

Does the NSN 5305-00-297-8359 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-297-8359 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 5305-00-297-8359 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-297-8359 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 5305-00-297-8359 was assigned to the Federal Catalog?

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