CPP1902B001BC21
View detailed technical data, stock status, and sourcing information for: CPP1902B001BC21
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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.
0.138 inches minimum and 0.188 inches maximum thread length, 2a thread class, 0.156 inches minimum and 0.188 inches maximum fastener length, right-hand thread direction, flat countersunk undercut 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
- 0.138 inches minimum and 0.188 inches maximum
- Fastener Length
- 0.156 inches minimum and 0.188 inches maximum
- Head Style
- flat countersunk undercut
- Head Diameter
- 0.195 inches minimum and 0.225 inches maximum
- Head Height
- 0.038 inches minimum and 0.047 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.112 inches
- Thread Quantity Per Inch
- 40
- Minimum Tensile Strength
- 57000 pounds per square inch
- Countersink Angle
- 80.0 degrees minimum and 82.0 degrees maximum
- Screw Material
- copper alloy
- Screw Material Document And Classification
- qq-b-626 fed spec single material response or qq-w-321 fed spec single material 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-206-0721 | No Name Available | 05/23/1967 |
| 5305-00-616-1187 | No Name Available | 06/22/2004 |
| 5305-00-685-8029 | No Name Available | 06/04/2008 |
| 5305-00-759-9705 | No Name Available | 10/01/1982 |
| 5305-00-800-3626 | No Name Available | 10/25/2016 |
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 |
|---|---|
| 342-0151-000 | Machine Screw |
| CPP1902B001BC21 | Machine Screw |
| MS35198-11 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-959-5051?
Does the NSN 5305-00-959-5051 have a Schedule B code assigned?
Does NSN 5305-00-959-5051 require demilitarization?
Does NSN 5305-00-959-5051 contain precious materials?
Does NSN 5305-00-959-5051 contain hazardous materials?
When the NSN 5305-00-959-5051 was assigned to the Federal Catalog?
Professional Distribution
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