5305-00-420-1756
Find complete technical information, availability, and procurement data for: 5305-00-420-1756
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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.
0.500 inches nominal fastener length, 0.451 inches minimum thread length, flat countersunk head style, 2a 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
- 2a
- Thread Direction
- right-hand
- Thread Length
- 0.451 inches minimum
- Fastener Length
- 0.500 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.225 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.112 inches
- Thread Quantity Per Inch
- 40
- Countersink Angle
- 100.0 degrees nominal
- Screw Material
- steel corrosion resisting
- Screw Surface Treatment
- passivate
- Special Features
- furnished with one silicone rubber o ring; bearing surface of head grooved to accommodate o ring
- Thread Series Designator
- unc
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-01-109-1328 | No Name Available | 03/01/1988 |
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 |
|---|---|
| 2508747-2 | Machine Screw |
| 3594857-2 | Machine Screw |
| SFR/4-40X1/2 B.0. | Machine Screw |
| SFR4-40X1-2 | Machine Screw |
FAQs
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Does NSN 5305-00-420-1756 require demilitarization?
Does NSN 5305-00-420-1756 contain precious materials?
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When the NSN 5305-00-420-1756 was assigned to the Federal Catalog?
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