5305-01-198-8234
Find complete technical information, availability, and procurement data for: 5305-01-198-8234
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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, 1.016 inches minimum and 1.046 inches maximum fastener length, oval countersunk head style, 3a thread class, 0.444 inches minimum and 0.494 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
- 0.444 inches minimum and 0.494 inches maximum
- Fastener Length
- 1.016 inches minimum and 1.046 inches maximum
- Head Style
- oval countersunk
- Head Diameter
- 0.3898 inches minimum and 0.3948 inches maximum
- Grip Diameter
- 0.2485 inches minimum and 0.2495 inches maximum
- Shank Unthreaded Hole Diameter
- 0.076 inches minimum and 0.086 inches maximum first hole
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.250 inches
- Grip Length
- 0.552 inches minimum and 0.572 inches maximum
- Thread Quantity Per Inch
- 28
- Minimum Tensile Strength
- 180000 pounds per square inch
- Hardness Rating
- 39.0 rockwell c minimum and 43.0 rockwell c maximum overall
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 0.890 inches minimum and 0.930 inches maximum first hole
- Surface Finish
- 32.0 microinches grip
- Surface Finish
- 32.0 microinches threads
- Material
- steel comp 8740 overall
- Material Document And Classification
- mil-s-6049 mil spec single material response overall
- Surface Treatment
- aluminum overall
- Surface Treatment Document And Classification
- mil-c-83488 ty 2 cl 3 mil spec single treatment response overall
- Thread Series Designator
- unjf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-01-130-8392 | No Name Available | 12/01/1991 |
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 |
|---|---|
| 10113531 | Close Tolerance Screw |
| HT4053-4D9A | Close Tolerance Screw |
| ST3M740-4DL9 | Close Tolerance Screw |
FAQs
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When the NSN 5305-01-198-8234 was assigned to the Federal Catalog?
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