5305-00-256-3446
Find complete technical information, availability, and procurement data for: 5305-00-256-3446
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An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
0.145 inches minimum and 0.259 inches maximum thread length, 0.344 inches minimum and 0.375 inches maximum fastener length, right-hand thread direction, 2a thread class, 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.145 inches minimum and 0.259 inches maximum
- Fastener Length
- 0.344 inches minimum and 0.375 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.340 inches minimum and 0.385 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.190 inches
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 80000 pounds per square inch
- Countersink Angle
- 80.0 degrees minimum and 82.0 degrees maximum
- Screw Material
- steel corrosion resisting or steel
- Screw Material Document And Classification
- qq-s-763,300 series fed spec 1st material response or 66,300 series fed std 1st material response or comp 16-18 or 18-8 assn std 2nd material response
- Thread Series Designator
- unc
- Nondefinitive Spec/Std Data
- 3 type and 2c style
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 |
|---|---|
| MS51959-61B | Machine Screw |
FAQs
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