BLT4745 Machine Bolt

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5306-01-166-4521

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Official Item Classification

Name: Machine Bolt
Part Number: BLT4745
(NSN) National Stock Number: 5306-01-166-4521
(FSG) Federal Supply Group: 53 Hardware and Abrasives
(FSC) Federal Supply Classification: 5306 Bolts
(INC) Item Name Code: 01847
(FIIG) Federal Item Identification Guide: A003B0
Date: 11/12/1983 (42 years ago)

double hexagon w/hole head style, 1.250 inches nominal fastener length, right-hand thread direction, 0.750 inches minimum and 0.810 inches maximum thread length, 3a thread class

Specs & Compatibility

Thread Class

Thread Direction

right-hand

Thread Length

0.750 inches minimum and 0.810 inches maximum

Fastener Length

1.250 inches nominal

Head Style

double hexagon w/hole

Head Height

0.303 inches nominal

Width Between Flats

0.312 inches nominal

Extended Washer Diameter

0.438 inches nominal

Extended Washer Thickness

0.060 inches nominal

Nominal Thread Diameter

0.250 inches

Hole Quantity

Hole Type

drilled

Thread Quantity Per Inch

Hole Configuration Style

double hexagon longitudinal hole

Surface Finish

32.0 microinches grip

Surface Treatment

silver overall

Thread Series Designator

unjf

Regulatory Compliance

Precious Metals Indicator

Item contains silver.

Criticality Code

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0001847

Related Hardware Products

Part Number	Description
99-607-6408	Machine Bolt
BLT4745	Machine Bolt

Frequently Asked Questions

What is the FSCG of the NSN 5306-01-166-4521?

The FSCG of the NSN 5306-01-166-4521 is 5306

Does the NSN 5306-01-166-4521 have a Schedule B code assigned?

Yes, the Schedule B code is 8301600000

Does NSN 5306-01-166-4521 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 5306-01-166-4521 contain precious materials?

Item contains silver.

Does NSN 5306-01-166-4521 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 5306-01-166-4521 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Sat, Nov 12, 1983