Round Self-Locking Nut

50-20
(NSN) National Stock Number
5310-01-139-6791
Federal Supply Classification
5310 Nuts and Washers
Item Name Code
15895
Schedule B Code
7318160000
Summary

3b thread class, right-hand thread direction, prevailing torque with nonmetallic insert locking feature, 0.080 inches nominal drive point depth, round nut style, 0.870 inches minimum and 0.880 inches maximum nut diameter

DAC HCC DMIL RNCC
5 - - 3
RNVC SADC MSDS RNAAC
2 - - KE
Identification

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protusions, slots or splines in or on the periphery or in the face opposite the bearing surface. An integral feature is incorporated for locking on the threads of a mating member. Do not use if a more specific item name applies. Excludes:collar, pin-rivet, threaded; insert, screw thread; nut (1), sleeve; nut(1), plain, cap; and turnbuckle body.

INC FIIG Concept Condition
15895 A021A0 1 1
Specifications
Thread Class
3b
Details A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
Thread Direction
right-hand
Details The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.
Locking Feature
prevailing torque with nonmetallic insert
Details An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.
Drive Point Depth
0.080 inches nominal
Details None.
Nut Style
round
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
Nut Diameter
0.870 inches minimum and 0.880 inches maximum
Details None.
Nut Thickness
0.315 inches nominal
Details A measurement between the opposite flat surfaces of the nut,in distinction from length or width.
Drive Point Quantity
4
Details None.
Drive Point Diameter
0.092 inches minimum and 0.097 inches maximum
Details None.
Thread Series
uns
Details A designation indicating the diameter-pitch combination and the number of threads per measurement scale applied to a series of diameters.
Thread Quantity Per Inch
32
Details The number of threads on the item per linear inch measured on a line parallel to the thread axis.
Nominal Thread Size
0.664 inches
Details A designation that is used for the purpose of general identification of the thread.
Material
steel comp 4130 overall except insert
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Surface Treatment
oxide overall except insert
Details The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
Master-Cross Reference List
Part CAGE DAC HCC RNCC RNVC MSDS RNAAC
10109773 A486G 9 - 6 9 - WF
SL7105 97393 5 - 3 2 - KE
5C-20 06641 5 - 3 2 - KE
2493734 99551 1 - 1 2 - KE
Material and Special Handling
Hazardous material, precious metals, criticality, and electrostatic discharge indicators.
HMIC PMIC ESD/EMI Criticality
N A - -
Freight
Universal / National Freight and Handling Information
UFC HMC LTL LCL
48950 - W -
RVC WCC TCC SHC
- 573 Z 9
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FAQs
Frequently asked questions for NSN 5310-01-139-6791
What is the NIIN of the NSN 5310-01-139-6791?
The National Item Identification Number (NIIN) of the NSN 5310-01-139-6791 is 01-139-6791
When the NSN 5310-01-139-6791 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Tue, Oct 5, 1982
Does the NSN 5310-01-139-6791 contain any precious metals?
Does not contain precious metal
Does the NSN 5310-01-139-6791 contain any hazardous material?
No data in HMIRS

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