3176207-B-274

View detailed technical data, stock status, and sourcing information for: 3176207-B-274
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-274-0034

Item Name Code

16282

Assigment Date

03/04/1988 (38 years ago)

3a thread class, 4.920 inches minimum and 5.000 inches maximum fastener length, right-hand thread direction, flat chamfer head style, 4.766 inches minimum and 5.000 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: 3a
Thread Direction: right-hand
Thread Length: 4.766 inches minimum and 5.000 inches maximum
Fastener Length: 4.920 inches minimum and 5.000 inches maximum
Head Style: flat chamfer
Head Diameter: 0.735 inches minimum and 0.750 inches maximum
Head Height: 0.492 inches minimum and 0.500 inches maximum
Hole Diameter: 0.061 inches minimum and 0.067 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.500 inches
Width Across Flats: 0.375 inches nominal
Hole Quantity: 6
Hole Type: drilled
Thread Quantity Per Inch: 13
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 38.0 rockwell c minimum and 45.0 rockwell c maximum overall
Hole Configuration Style: round internal hexagon
Surface Finish: 32.0 microinches threads
Surface Finish: 63.0 microinches bearing surface of head
Material: steel overall
Surface Treatment: zinc and chromate overall
Surface Treatment Document And Classification: astm b633 ty 2 cl 3 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
3176207-B-274	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-274-0034?

The FSCG of the NSN 5305-01-274-0034 is 5305

Does the NSN 5305-01-274-0034 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-274-0034 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 5305-01-274-0034 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-274-0034 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 5305-01-274-0034 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Fri, Mar 4, 1988