NAS7903A3
View detailed technical data, stock status, and sourcing information for: NAS7903A3
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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.
0.323 inches nominal thread length, 0.496 inches minimum and 0.526 inches maximum fastener length, pan head style, 3a thread class, 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
- 0.323 inches nominal
- Fastener Length
- 0.496 inches minimum and 0.526 inches maximum
- Head Style
- pan
- Head Diameter
- 0.357 inches minimum and 0.373 inches maximum
- Head Height
- 0.122 inches minimum and 0.133 inches maximum
- Grip Diameter
- 0.1885 inches minimum and 0.1895 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 0.178 inches minimum and 0.188 inches maximum
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 160000 pounds per square inch
- Material
- titanium alloy uns r56400 overall
- Material Document And Classification
- ams4928 assn std single material response or ams4967 assn std single material response overall
- Surface Treatment
- aluminum overall
- Surface Treatment Document And Classification
- nas4006 assn std single treatment response overall
- Thread Series Designator
- unjf
- Specification/Standard Data
- 80205-nas7903 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 |
|---|---|
| NAS7903A3 | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-338-4037?
Does the NSN 5305-01-338-4037 have a Schedule B code assigned?
Does NSN 5305-01-338-4037 require demilitarization?
Does NSN 5305-01-338-4037 contain precious materials?
Does NSN 5305-01-338-4037 contain hazardous materials?
When the NSN 5305-01-338-4037 was assigned to the Federal Catalog?
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