FT1046-74A
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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.
2a thread class, 0.350 inches minimum and 0.380 inches maximum head diameter, 0.642 inches minimum and 0.672 inches maximum fastener length, knurled no. 1 head style, 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
- 2a
- Thread Direction
- right-hand
- Fastener Length
- 0.642 inches minimum and 0.672 inches maximum
- Head Style
- knurled no. 1
- Head Diameter
- 0.350 inches minimum and 0.380 inches maximum
- Head Height
- 0.642 inches minimum and 0.672 inches maximum
- Internal Drive Style
- cross recess type 1
- Material Accommodated Thickness
- 0.062 inches minimum and 0.102 inches maximum
- Nominal Thread Diameter
- 0.190 inches
- Thread Quantity Per Inch
- 32
- Material
- iron alloy 660 fastener
- Material
- steel comp 302 primary washer
- Material
- steel comp 302 spring
- Material
- steel comp 301 secondary washer
- Material
- steel comp 304 stand-off
- Surface Treatment
- oxide primary washer
- Surface Treatment
- oxide stand-off
- Surface Treatment
- oxide secondary washer
- Surface Treatment
- passivate spring
- Surface Treatment
- oxide fastener
- 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 |
|---|---|
| 841581-74 | Panel Screw Assembly |
| FT1046-74A | Panel Screw Assembly |
FAQs
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What is the FSCG of the NSN 5305-01-446-7391?
Does the NSN 5305-01-446-7391 have a Schedule B code assigned?
Does NSN 5305-01-446-7391 require demilitarization?
Does NSN 5305-01-446-7391 contain precious materials?
Does NSN 5305-01-446-7391 contain hazardous materials?
When the NSN 5305-01-446-7391 was assigned to the Federal Catalog?
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