BACB30EL5CNN19
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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.
3a thread class, flat countersunk head style, 0.360 inches minimum and 0.390 inches maximum thread length, 1.538 inches minimum and 1.588 inches maximum fastener length, right-hand thread direction
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
- 0.360 inches minimum and 0.390 inches maximum
- Fastener Length
- 1.538 inches minimum and 1.588 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.429 inches minimum and 0.479 inches maximum
- Grip Diameter
- 0.3110 inches minimum and 0.3120 inches maximum
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.312 inches
- Grip Length
- 1.178 inches minimum and 1.198 inches maximum
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 160000 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 100.0 degrees maximum
- Material
- steel comp 4130 overall
- Material Document And Classification
- mil-s-6758 mil spec single material response overall
- Surface Treatment
- nickel overall
- Surface Treatment Document And Classification
- ams 2416 assn std 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 |
|---|---|
| BACB30EL5CN19 | Close Tolerance Screw |
| BACB30EL5CNN19 | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-204-6845?
Does the NSN 5305-01-204-6845 have a Schedule B code assigned?
Does NSN 5305-01-204-6845 require demilitarization?
Does NSN 5305-01-204-6845 contain precious materials?
Does NSN 5305-01-204-6845 contain hazardous materials?
When the NSN 5305-01-204-6845 was assigned to the Federal Catalog?
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