BACB30LU7-49

View detailed technical data, stock status, and sourcing information for: BACB30LU7-49
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-435-3939

Item Name Code

29294

Assigment Date

08/22/1996 (30 years ago)

A protective device specifically designed to prevent damage to an electrical motor due to failure of the motor to start, severe overloading of short duration, too frequent starting, high ambient temperature, high or low circuit voltages, failure of ventilation or any combination thereof. It is designed to be either automatically or manually reset. Excludes:circuit breakey; switch (1), thermostatic; heater, thermal release; and relay (1), thermal.

3.7415 inches minimum and 3.7715 inches maximum fastener length, flat countersunk head style, right-hand thread direction, 0.694 inches nominal thread 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: 0.694 inches nominal
Fastener Length: 3.7415 inches minimum and 3.7715 inches maximum
Head Style: flat countersunk
Head Diameter: 0.809 inches minimum and 0.892 inches maximum
Grip Diameter: 0.4360 inches minimum and 0.4370 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.4375 inches
Grip Length: 3.0525 inches minimum and 3.0725 inches maximum
Thread Quantity Per Inch: 20
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Material: steel comp e4340 or steel comp 8740 overall
Material Document And Classification: mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or ams 6322 assn std 2nd material response overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416, type 2 class 2 fed spec single treatment response 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
BACB30LU7-49	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-435-3939?

The FSCG of the NSN 5305-01-435-3939 is 5305

Does the NSN 5305-01-435-3939 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-435-3939 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 5305-01-435-3939 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-435-3939 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 5305-01-435-3939 was assigned to the Federal Catalog?

It was assigned 30 years ago, on Thu, Aug 22, 1996