HT4049-3D6
View detailed technical data, stock status, and sourcing information for: HT4049-3D6
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A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. Attached to panel by threaded bushing or by flaring end of stand-off, or bushing. Used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. May be spring loaded.
right-hand thread direction, 0.251 inches minimum and 0.301 inches maximum thread length, 3a thread class, 0.636 inches minimum and 0.666 inches maximum fastener length, flat countersunk 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
- 0.251 inches minimum and 0.301 inches maximum
- Fastener Length
- 0.636 inches minimum and 0.666 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.376 inches minimum and 0.385 inches maximum
- Grip Diameter
- 0.1890 inches minimum and 0.1895 inches maximum
- Shank Unthreaded Hole Diameter
- 0.070 inches minimum and 0.075 inches maximum first hole
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 0.365 inches minimum and 0.385 inches maximum
- Thread Quantity Per Inch
- 32
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Distance From Head Largest Bearing Surface To Shank Hole Center
- 0.518 inches minimum and 0.548 inches maximum first hole
- Material
- steel comp xm-13 overall
- Material Document And Classification
- ams5629 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
- unjf
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 |
|---|---|
| HT4049-3D6 | Close Tolerance Screw |
| ST3M714-3D6 | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-251-0782?
Does the NSN 5305-01-251-0782 have a Schedule B code assigned?
Does NSN 5305-01-251-0782 require demilitarization?
Does NSN 5305-01-251-0782 contain precious materials?
Does NSN 5305-01-251-0782 contain hazardous materials?
When the NSN 5305-01-251-0782 was assigned to the Federal Catalog?
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