5305-01-348-2678
Find complete technical information, availability, and procurement data for: 5305-01-348-2678
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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, 0.573 inches minimum and 0.603 inches maximum fastener length, 0.276 inches nominal thread length, right-hand thread direction, flat chamfer head style
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
- 0.276 inches nominal
- Fastener Length
- 0.573 inches minimum and 0.603 inches maximum
- Head Style
- flat chamfer
- Head Diameter
- 0.221 inches minimum and 0.226 inches maximum
- Head Height
- 0.074 inches minimum and 0.086 inches maximum
- Grip Diameter
- 0.1365 inches minimum and 0.1375 inches maximum
- Internal Drive Style
- offset cruciform (torque set)
- Nominal Thread Diameter
- 0.138 inches
- Grip Length
- 0.302 inches minimum and 0.322 inches maximum
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Hardness Rating
- 36.0 rockwell c minimum and 40.0 rockwell c maximum overall
- Surface Finish
- 32.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads
- Material
- iron alloy 660 overall
- Material Document And Classification
- ams 5737 assn std single material response overall
- Surface Treatment
- passivate overall
- Surface Treatment Document And Classification
- qq-p-35 fed spec single treatment response overall
- Thread Series Designator
- unjc
- Specification/Standard Data
- 80205-nas1121 professional/industrial association 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 |
|---|---|
| NAS1121E5 | Close Tolerance Screw |
FAQs
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