BACB30AB-P8-21A

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-059-0229

Item Name Code

29294

Assigment Date

04/06/1978 (48 years ago)

1.562 inches minimum and 1.594 inches maximum fastener length, 0.490 inches minimum and 0.542 inches maximum thread length, flat countersunk head style, right-hand thread direction, 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: 0.490 inches minimum and 0.542 inches maximum
Fastener Length: 1.562 inches minimum and 1.594 inches maximum
Head Style: flat countersunk
Head Diameter: 0.929 inches minimum and 1.024 inches maximum
Grip Diameter: 0.4982 inches minimum and 0.4991 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.500 inches
Grip Length: 1.052 inches minimum and 1.072 inches maximum
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
Countersink Angle: 100.0 degrees nominal
Surface Finish: 63.0 microinches grip
Material: steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416,type 2,class 3 fed spec single treatment response overall
Thread Series Designator: unf
Specification/Standard Data: 81205-bacb30ab manufacturers standard

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
BACB30AB-P8-21A	Close Tolerance Screw
BACB30LR8-17	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-059-0229?

The FSCG of the NSN 5305-01-059-0229 is 5305

Does the NSN 5305-01-059-0229 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-059-0229 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 5305-01-059-0229 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-059-0229 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 5305-01-059-0229 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Thu, Apr 6, 1978