5305-00-637-7778
Find complete technical information, availability, and procurement data for: 5305-00-637-7778
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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.
3a thread class, right-hand thread direction, 1.266 inches minimum and 1.313 inches maximum fastener length, 0.436 inches minimum thread length, round 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
- 0.436 inches minimum
- Fastener Length
- 1.266 inches minimum and 1.313 inches maximum
- Head Style
- round
- Head Diameter
- 0.361 inches minimum and 0.385 inches maximum
- Head Height
- 0.103 inches minimum and 0.118 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.190 inches
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 62000 pounds per square inch
- Screw Material
- aluminum alloy
- Screw Surface Treatment
- anodize
- Thread Series Designator
- unf
- Specification/Standard Data
- 80205-nas221 professional/industrial association standard
Replaces National Stock Numbers
Below is a list of NSNs that have been officially superseded by this NSN:
| NSN | Name | Date |
|---|---|---|
| 5305-00-165-0034 | No Name Available | 09/01/1982 |
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 |
|---|---|
| NAS221DD20 | Machine Screw |
FAQs
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When the NSN 5305-00-637-7778 was assigned to the Federal Catalog?
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