1746U21

View detailed technical data, stock status, and sourcing information for: 1746U21

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1746U21
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-00-639-2875
Item Name Code
04905
Assigment Date
01/01/1963 (63 years ago)

right-hand thread direction, hexagon head style, 2a thread class, 2.031 inches nominal fastener length, 0.635 inches minimum and 0.645 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
0.635 inches minimum and 0.645 inches maximum
Fastener Length
2.031 inches nominal
Head Style
hexagon
Head Height
0.188 inches nominal
Width Between Flats
0.750 inches nominal
Shoulder Diameter
0.469 inches nominal first shoulder
Shoulder Length
1.058 inches nominal first shoulder
Shoulder Length
1.068 inches nominal second shoulder
Nominal Thread Diameter
0.312 inches
Thread Quantity Per Inch
24
Shoulder Shape
round all shoulders
Material
steel overall
Surface Treatment
zinc overall
Thread Series Designator
unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
2530-00-693-0640 No Name Available 01/01/1963

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
1433M1 Shoulder Bolt
1746U21 Shoulder Bolt
1746U21C Shoulder Bolt
8331242 Shoulder Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-639-2875?
The FSCG of the NSN 5306-00-639-2875 is 5306
Does the NSN 5306-00-639-2875 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-639-2875 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 5306-00-639-2875 contain precious materials?
Precious metal content is unknown
Does NSN 5306-00-639-2875 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 5306-00-639-2875 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

Professional Distribution

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