BACB30AB-P8-49A
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A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.
flat countersunk head style, 0.490 inches minimum and 0.542 inches maximum thread length, right-hand thread direction, 3a thread class, 3.312 inches minimum and 3.344 inches maximum fastener 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
- 0.490 inches minimum and 0.542 inches maximum
- Fastener Length
- 3.312 inches minimum and 3.344 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
- 2.802 inches minimum and 2.822 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
- 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-P8-49A | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-059-0224?
Does the NSN 5305-01-059-0224 have a Schedule B code assigned?
Does NSN 5305-01-059-0224 require demilitarization?
Does NSN 5305-01-059-0224 contain precious materials?
Does NSN 5305-01-059-0224 contain hazardous materials?
When the NSN 5305-01-059-0224 was assigned to the Federal Catalog?
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