BLT4745

View detailed technical data, stock status, and sourcing information for: BLT4745
DODParts.com distributes related products varnishes dopes paints, aircraft parts and consumables, electrical parts, fittings and other components for the aerospace and defense industries. Submit the short price quote form for part BLT4745 to receive an up to date pricing and availability quote by email.

Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-166-4521

Item Name Code

01847

Assigment Date

11/12/1983 (42 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

double hexagon w/hole head style, 0.750 inches minimum and 0.810 inches maximum thread length, right-hand thread direction, 1.250 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: 0.750 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: 4
Hole Type: drilled
Thread Quantity Per Inch: 28
Hole Configuration Style: double hexagon longitudinal hole
Surface Finish: 32.0 microinches grip
Surface Treatment: silver overall
Thread Series Designator: unjf

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
99-607-6408	Machine Bolt
BLT4745	Machine Bolt

FAQs

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

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