MS51957-53
View detailed technical data, stock status, and sourcing information for: MS51957-53
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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.
1.938 inches minimum and 2.000 inches maximum thread length, 2a thread class, 2.000 inches nominal fastener length, pan head style, 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
- 1.938 inches minimum and 2.000 inches maximum
- Fastener Length
- 2.000 inches nominal
- Head Style
- pan
- Head Diameter
- 0.306 inches minimum and 0.322 inches maximum
- Head Height
- 0.105 inches minimum and 0.115 inches maximum
- Internal Drive Style
- cross recess type 1
- Nominal Thread Diameter
- 0.164 inches
- Thread Quantity Per Inch
- 32
- Minimum Tensile Strength
- 80000 pounds per square inch
- Screw Material
- steel comp 302 or steel comp 303 or steel comp 304 or steel comp 305 or steel comp 316
- Screw Material Document And Classification
- 66 fed std all material responses or aisi assn std all material responses or sae assn std all material responses
- 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Below is a list of NSNs that have been officially superseded by this NSN: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 |
|---|---|---|
| 5305-00-023-4604 | No Name Available | 12/01/1982 |
| 5305-00-069-5225 | No Name Available | 02/28/1969 |
| 5305-00-333-4138 | No Name Available | 10/07/1966 |
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 |
|---|---|
| 919-53 | Machine Screw |
| MS51957-53 | Machine Screw |
FAQs
Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.
What is the FSCG of the NSN 5305-00-054-6680?
Does the NSN 5305-00-054-6680 have a Schedule B code assigned?
Does NSN 5305-00-054-6680 require demilitarization?
Does NSN 5305-00-054-6680 contain precious materials?
Does NSN 5305-00-054-6680 contain hazardous materials?
When the NSN 5305-00-054-6680 was assigned to the Federal Catalog?
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