Burnishing a molydisulfide coating into the thread surfaces of fasteners eliminates the need for binders and vehicles which ensure coverage and retention of the lubricant during fastening. The coating may be applied by any convenient method

Gruper, J. L.

English

NASA Technical Reports Server

October 1965	 Brief 65-10302 
NASA TECH BRIEF H 
NASA Tech Briefs are issued by the Technology Utilization Division to summarize specific 
technical innovations derived from the space program. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia, 22151. 
Burnishing Technique Improves Lubrication of Threaded Fasteners 
The problem: Conventional methods of applying 
dry film lubricants such as molydisulfide to threaded 
fasteners involve the use of binders and vehicles to 
• ensure coverage and retention during fastening. These 
necessary materials are subject to displacement and 
loss during storage and handling. 
The solution: A molydisulfide coating is burn-
ished into the thread surfaces during final manufac-
turing operations. 
How it's done: The fastener threads are rolled 
0.010 to 0.015 inch oversize and the molydisulfide 
coating is applied. A final rolling operation both re-
duces the threads to design size and burnishes the dry 
film lubricant into the thread surfaces. 
Notes: 
1. The molydisulfide may be applied by any conven-
ient method including final rolling of the threads 
in a molydisulfide environment.
2. Inquiries concerning this innovation may be di-
rected to:
Technology Utilization Officer 
Lewis Research Center 
21000 Brookpark Road 
Cleveland, Ohio, 44135 
Reference: B65-10302 
Patent status: NASA encourages commercial use 
of this innovation. No patent action is contemplated 
by NASA.
Source: James L. Gruper of

Lockheed Missiles and Space Company

under contract to

Lewis Research Center

(Lewis-217) 
Category 03 
This document was prepared under the sponsorship of the National
	 Government assumes any liability resulting from the use of the 
Aeronautics and Space Administration. Neither the United States
	 information contained in this document, or warrants that such use 
Government nor any person acting on behalf of the United States
	 will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19650000300 2020-03-11T17:20:18+00:00Z


Burnishing technique improves lubrication of threaded fasteners

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