5305-00-144-3444
Find complete technical information, availability, and procurement data for: 5305-00-144-3444
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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.
right-hand thread direction, flat countersunk undercut head style, 1.890 inches minimum and 1.937 inches maximum fastener length, 3a thread class, 0.530 inches minimum and 0.697 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
- 0.530 inches minimum and 0.697 inches maximum
- Fastener Length
- 1.890 inches minimum and 1.937 inches maximum
- Head Style
- flat countersunk undercut
- Head Diameter
- 0.881 inches minimum and 0.888 inches maximum
- Head Height
- 0.130 inches minimum and 0.133 inches maximum
- Grip Diameter
- 0.4360 inches minimum and 0.4370 inches maximum
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.438 inches
- Grip Length
- 1.240 inches minimum and 1.260 inches maximum
- Thread Quantity Per Inch
- 20
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 40.0 rockwell c minimum and 43.0 rockwell c maximum overall
- Countersink Angle
- 100.0 degrees nominal
- Surface Finish
- 32.0 microinches grip
- Special Features
- furnished w/1 preformed packing
- Material
- steel overall
- Surface Treatment
- cadmium overall
- Surface Treatment Document And Classification
- nas 672 assn std single treatment response overall
- Thread Series Designator
- unf
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 |
|---|---|
| 3M47-7-20 | Close Tolerance Screw |
| HT403A7-20 | Close Tolerance Screw |
FAQs
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When the NSN 5305-00-144-3444 was assigned to the Federal Catalog?
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