2491621

View detailed technical data, stock status, and sourcing information for: 2491621
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-814-0113

Item Name Code

16282

Assigment Date

06/10/1968 (58 years ago)

flat chamfer head style, 0.859 inches minimum and 0.891 inches maximum fastener length, right-hand thread direction, 0.748 inches minimum and 0.875 inches maximum thread length, 3a thread class

Product Characteristics

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

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.748 inches minimum and 0.875 inches maximum
Fastener Length: 0.859 inches minimum and 0.891 inches maximum
Head Style: flat chamfer
Head Diameter: 0.429 inches minimum and 0.438 inches maximum
Head Height: 0.306 inches minimum and 0.313 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.218 inches minimum and 0.222 inches maximum
Thread Quantity Per Inch: 18
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 45.0 rockwell c maximum overall
Material: steel overall
Material Document And Classification: fed std 66 fed std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,type 2 class 3 fed spec single treatment response overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 1 type
Departure From Cited Designator: as modified by head,45 degv groove around surface of hd,0.345in.dia,0.030in.w

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
2491621	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-814-0113?

The FSCG of the NSN 5305-00-814-0113 is 5305

Does the NSN 5305-00-814-0113 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-814-0113 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 5305-00-814-0113 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-00-814-0113 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 5305-00-814-0113 was assigned to the Federal Catalog?

It was assigned 58 years ago, on Mon, Jun 10, 1968