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BACX12CB3-28

View detailed technical data, stock status, and sourcing information for: BACX12CB3-28

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BACX12CB3-28
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-01-155-8646
Item Name Code
06657
Assigment Date
06/16/1983 (43 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.

1.734 inches minimum and 1.781 inches maximum fastener length, 3a thread class, right-hand thread direction, hexagon head style, 1.670 inches minimum and 1.749 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
3a
Thread Direction
right-hand
Thread Length
1.670 inches minimum and 1.749 inches maximum
Fastener Length
1.734 inches minimum and 1.781 inches maximum
Head Style
hexagon
Head Height
0.105 inches minimum and 0.120 inches maximum
Width Between Flats
0.305 inches minimum and 0.314 inches maximum
Internal Drive Style
cross recess type 1
Nominal Thread Diameter
0.190 inches
Thread Quantity Per Inch
32
Minimum Tensile Strength
160000 pounds per square inch
Screw Material
steel comp e4340 or steel comp 8740
Screw 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
Screw Surface Treatment Document And Classification
qq-p-416 ty 2 class 2 fed spec single treatment response
Thread Series Designator
unjf
Specification/Standard Data
80205-nas1801 professional/industrial association standard

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-01-045-2453 No Name Available 09/01/1991

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
BACX12CB3-28 Machine Screw
NAS1801-3-28 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-155-8646?
The FSCG of the NSN 5305-01-155-8646 is 5305
Does the NSN 5305-01-155-8646 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-155-8646 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 5305-01-155-8646 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-155-8646 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 5305-01-155-8646 was assigned to the Federal Catalog?
It was assigned 43 years ago, on Thu, Jun 16, 1983

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