Spline Self-Locking Nut

MS51866-8

MS51866-8
(NSN) National Stock Number
5310-01-138-4717
Federal Supply Classification
5310 Nuts and Washers
Item Name Code
15893
Schedule B Code
7318160000
Summary

3b thread class, right-hand thread direction, prevailing torque all metal design or prevailing torque with nonmetallic insert locking feature, 0.321 inches minimum and 0.325 inches maximum pilot diameter, 0.110 inches minimum and 0.140 inches maximum pilot length, dry film lubricant lubrication

DAC HCC DMIL RNCC
4 - - 2
RNVC SADC MSDS RNAAC
2 - - KZ
Identification

A nut having an externally splined sleeve, which holds it in position when forced into a hole of slightly smaller diameter. An integral feature is incorporated for locking.

INC FIIG Concept Condition
15893 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 all metal design or 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.
Pilot Diameter
0.321 inches minimum and 0.325 inches maximum
Details The length of a straight line which passes through the center of that portion used to guide the item and terminates at the circumference.
Pilot Length
0.110 inches minimum and 0.140 inches maximum
Details The length of the pilot,which is the unthreaded portion beyond the thread used to guide the item.
Lubrication
dry film lubricant
Details A substance designed to provide a reduction of friction between the two surfaces in contact.
Nut Style
spline
Details The style designation indicating the configuration that most nearly corresponds to the appearance of the nut.
Nut Height
0.267 inches minimum and 0.327 inches maximum
Details None.
Width Across Flats
0.423 inches minimum and 0.453 inches maximum
Details The shortest straight line between flats,perpendicular to the height.
Temp Rating
250.0 deg fahrenheit maximum
Details A value which expresses the degree of heat or cold as applied to the operation,or limitation of operation,of an item.
Thread Series
unf
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
0.190 inches
Details A designation that is used for the purpose of general identification of the thread.
Material
plastic polyamide locking insert
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Material
steel comp 1013 nut or steel comp 1015 nut or steel comp 1016 nut or steel comp 1017 nut or steel comp 1018 nut or steel comp 1019 nut or steel comp 1020 nut or steel comp 1021 nut or steel comp 1022 nut or steel comp 1023 nut or steel comp 1524 nut or steel comp 1025 nut or steel comp 1026 nut or steel comp 1527 nut or steel comp 1029 nut or steel comp 1030 nut or steel comp 1033 nut or steel comp 1034 nut or steel comp 1035 nut or steel comp 1536 nut or steel comp 1037 nut or steel comp 1038 nut or steel comp 1039 nut or steel comp 1040 nut or steel comp 1541 nut
Details The chemical compound or mechanical mixture properties of which the item is fabricated.
Surface Treatment
cadmium nut
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.
Surface Treatment Document And Classification
qq-p-416 fed spec single treatment response nut
Details The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
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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Manufacturer
MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
CAGE: 96906
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FAQs
Frequently asked questions for NSN 5310-01-138-4717
What is the NIIN of the NSN 5310-01-138-4717?
The National Item Identification Number (NIIN) of the NSN 5310-01-138-4717 is 01-138-4717
When the NSN 5310-01-138-4717 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Tue, Sep 14, 1982
Does the NSN 5310-01-138-4717 contain any precious metals?
Does not contain precious metal
Does the NSN 5310-01-138-4717 contain any hazardous material?
No data in HMIRS

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