161975

View detailed technical data, stock status, and sourcing information for: 161975
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-00-638-3577

Item Name Code

06676

Assigment Date

01/01/1963 (63 years ago)

round w/wrench flats head style, 3.500 inches nominal fastener length, right-hand thread direction, 3a thread class, 0.675 inches minimum 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: 0.675 inches minimum
Fastener Length: 3.500 inches nominal
Head Style: round w/wrench flats
Head Diameter: 1.875 inches nominal
Head Height: 0.250 inches nominal
Width Between Flats: 1.500 inches nominal
Shank Unthreaded Hole Diameter: 0.141 inches nominal first hole
Concentric Hole Depth: 3.500 inches nominal
Concentric Hole Diameter: 0.750 inches nominal
Nominal Thread Diameter: 1.125 inches
Thread Quantity Per Inch: 16
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 40.0 rockwell c minimum and 46.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center: 3.125 inches nominal first hole
Material: steel comp 8740 overall
Surface Treatment: cadmium overall
Style Designator: concentric hole unthreaded
Thread Series Designator: un

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
161975	Internally Relieved Body Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-638-3577?

The FSCG of the NSN 5306-00-638-3577 is 5306

Does the NSN 5306-00-638-3577 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-00-638-3577 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 5306-00-638-3577 contain precious materials?

Precious metal content is unknown

Does NSN 5306-00-638-3577 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 5306-00-638-3577 was assigned to the Federal Catalog?

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