5305-01-064-7221
Find complete technical information, availability, and procurement data for: 5305-01-064-7221
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A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. The unthreaded portion is of specific grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.
double hexagon w/ hole head style, 0.615 inches minimum and 0.635 inches maximum fastener length, 0.553 inches minimum and 0.635 inches maximum thread length, right-hand thread direction, 3a thread class
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
- 0.553 inches minimum and 0.635 inches maximum
- Fastener Length
- 0.615 inches minimum and 0.635 inches maximum
- Head Style
- double hexagon w/ hole
- Head Height
- 0.250 inches nominal
- Width Between Flats
- 0.212 inches minimum and 0.220 inches maximum
- Extended Washer Diameter
- 0.312 inches nominal
- Extended Washer Thickness
- 0.030 inches minimum and 0.040 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity Per Inch
- 32
- Hardness Rating
- 26.0 rockwell c minimum and 33.0 rockwell c maximum
- Screw Material
- steel
- Thread Series Designator
- unc
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-338-5075 | No Name Available | 09/01/1993 |
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