MS51959-27
View detailed technical data, stock status, and sourcing information for: MS51959-27
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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.
flat countersunk head style, 2a thread class, 0.281 inches minimum and 0.312 inches maximum fastener length, 0.250 inches minimum and 0.312 inches maximum thread 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
- 0.250 inches minimum and 0.312 inches maximum
- Fastener Length
- 0.281 inches minimum and 0.312 inches maximum
- Head Style
- flat countersunk
- Head Diameter
- 0.244 inches minimum and 0.279 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.138 inches
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 80 pounds per square inch
- Countersink Angle
- 80.0 degrees minimum and 82.0 degrees maximum
- Screw Material
- steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316
- Screw Surface Treatment
- passivate
- Screw Surface Treatment Document And Classification
- qq-p-35 fed spec single 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-059-7198 | No Name Available | 04/21/1969 |
| 5305-00-401-5149 | No Name Available | 08/19/1970 |
| 5305-00-718-9435 | No Name Available | 05/17/1971 |
| 5305-00-855-1169 | No Name Available | 10/16/1968 |
| 5305-00-948-0347 | No Name Available | 03/10/1969 |
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FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-763-6962?
Does the NSN 5305-00-763-6962 have a Schedule B code assigned?
Does NSN 5305-00-763-6962 require demilitarization?
Does NSN 5305-00-763-6962 contain precious materials?
Does NSN 5305-00-763-6962 contain hazardous materials?
When the NSN 5305-00-763-6962 was assigned to the Federal Catalog?
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