157285
View detailed technical data, stock status, and sourcing information for: 157285
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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.
2a thread class, flat countersunk head style, 0.542 inches minimum and 0.625 inches maximum thread length, 0.625 inches nominal fastener length, 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
- 0.542 inches minimum and 0.625 inches maximum
- Fastener Length
- 0.625 inches nominal
- Head Style
- flat countersunk
- Head Diameter
- 0.389 inches minimum and 0.438 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.216 inches
- Thread Quantity Per Inch
- 24
- Minimum Tensile Strength
- 60000 pounds per square inch
- Countersink Angle
- 80.0 degrees minimum and 82.0 degrees maximum
- Screw Material
- steel comp 1010 or steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019 or steel comp 1020
- Screw Material Document And Classification
- sae assn std all material responses
- Screw Surface Treatment Document And Classification
- qq-p-416,ty 1,cl 3 fed spec 1st treatment response or qq-z-325,ty 1,cl 3 fed spec 2nd treatment response
- 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-656-2360 | No Name Available | 05/12/1969 |
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 |
|---|---|
| 157285 | Machine Screw |
| SMD170732-14 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-015-7285?
Does the NSN 5305-00-015-7285 have a Schedule B code assigned?
Does NSN 5305-00-015-7285 require demilitarization?
Does NSN 5305-00-015-7285 contain precious materials?
Does NSN 5305-00-015-7285 contain hazardous materials?
When the NSN 5305-00-015-7285 was assigned to the Federal Catalog?
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