531640

View detailed technical data, stock status, and sourcing information for: 531640
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-273-5573

Item Name Code

16282

Assigment Date

01/01/1963 (63 years ago)

flat chamfer head style, 0.500 inches maximum thread length, right-hand thread direction, 0.500 inches nominal fastener 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: 0.500 inches maximum
Fastener Length: 0.500 inches nominal
Head Style: flat chamfer
Head Diameter: 0.265 inches minimum and 0.270 inches maximum
Head Height: 0.160 inches minimum and 0.164 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.164 inches
Width Across Flats: 0.125 inches minimum and 0.127 inches maximum
Thread Quantity Per Inch: 32
Hardness Rating: 36.0 rockwell c minimum and 43.0 rockwell c maximum overall
Material: steel comp 303 overall
Material Document And Classification: qq-s-763 fed spec single material response overall
Surface Treatment: passivate overall
Thread Series Designator: unc
Specification/Standard Data: 81349-mils933 professional/industrial association standard
Nondefinitive Spec/Std Data: c type

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
12F1007-32	Socket Head Cap Screw
12Z1007-32	Socket Head Cap Screw
531640	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-273-5573?

The FSCG of the NSN 5305-00-273-5573 is 5305

Does the NSN 5305-00-273-5573 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-273-5573 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 5305-00-273-5573 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-273-5573 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 5305-00-273-5573 was assigned to the Federal Catalog?

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