HT4057-3-18A
View detailed technical data, stock status, and sourcing information for: HT4057-3-18A
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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.
3a thread class, flat countersunk head style, right-hand thread direction, 0.381 inches minimum and 0.431 inches maximum thread length, 1.516 inches minimum and 1.546 inches maximum fastener length
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
- 0.381 inches minimum and 0.431 inches maximum
- Fastener Length
- 1.516 inches minimum and 1.546 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.338 inches minimum and 0.381 inches maximum
- Grip Diameter
- 0.1885 inches minimum and 0.1895 inches maximum
- Internal Drive Style
- high-torque
- Nominal Thread Diameter
- 0.190 inches
- Grip Length
- 1.115 inches minimum and 1.135 inches maximum
- Features Provided
- cetyl alcohol lubricant
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 125000 pounds per square inch
- Countersink Angle
- 99.0 degrees minimum and 101.0 degrees maximum
- Material
- steel comp xm-13 overall
- Material Document And Classification
- ams 5629 assn std single material response overall
- Surface Treatment
- aluminum and chromate overall
- Surface Treatment Document And Classification
- mil-c-83488 ty 2 cl 3 mil spec single treatment response overall
- Thread Series Designator
- unjf
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-01-164-9730 | No Name Available | 10/01/1989 |
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 |
|---|---|
| 11935-3L18 | Close Tolerance Screw |
| HT4057-3-18 | Close Tolerance Screw |
| HT4057-3-18A | Close Tolerance Screw |
| ST3M733-3-18 | Close Tolerance Screw |
| ST3M733-3L18 | Close Tolerance Screw |
| ST3M733-3L18A | Close Tolerance Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-01-286-3114?
Does the NSN 5305-01-286-3114 have a Schedule B code assigned?
Does NSN 5305-01-286-3114 require demilitarization?
Does NSN 5305-01-286-3114 contain precious materials?
Does NSN 5305-01-286-3114 contain hazardous materials?
When the NSN 5305-01-286-3114 was assigned to the Federal Catalog?
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