Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW
The M63540/1-20C is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-171-3788, indicating validated use in U.S.
government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.
WHERE IT FITS
M63540/1-20C
NSN:5307-01-171-3788 FSC:5307 CAGE:81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part Number
M63540/1-20C
NSN
5307-01-171-3788
COMPONENT DIAGRAM
KEY FEATURES
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
HEAD LENGTH: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
THREAD CLASS: 2A NUT THREAD A
•
THREAD LENGTH: 0.270 INCHES MINIMUM AND 0.310 INCHES MAXIMUM NUT THREAD IN
•
STYLE DESIGNATOR: SELF-LOCKING
•
LOCKING FEATURE: SELF-CLINCHING HEAD
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) NUT THREAD
•
NOMINAL THREAD SIZE: 0.164 INCHES NUT THREAD IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTION
RIGHT-HAND NUT THREAD
HEAD LENGTH
0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
THREAD CLASS
2A NUT THREAD A
THREAD LENGTH
0.270 INCHES MINIMUM AND 0.310 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATOR
SELF-LOCKING
LOCKING FEATURE
SELF-CLINCHING HEAD
THREAD SERIES DESIGNATOR
UNIFIED NATIONAL COARSE (UNC) NUT THREAD
NOMINAL THREAD SIZE
0.164 INCHES NUT THREAD IN
MATERIAL
STEEL COMP 301 OR STEEL COMP 302 OR STEEL COMP 302B OR STEEL COMP 303 OR STEEL COMP 303SE OR STEEL COMP 304 OR STEEL COMP 304L OR STEEL COMP 305 OR STEEL COMP 309 OR STEEL COMP 308 OR STEEL COMP 309S OR STEEL COMP 310 OR STEEL COMP 310S OR STEEL COMP 316 OR STEEL COMP 316L OR STEEL COMP 317 OR STEEL COMP 321 OR STEEL COMP 347 OR STEEL COMP 348 OR STEEL COMP 384 OR STEEL COMP 385
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FREQUENTLY ASKED QUESTIONS
What is M63540/1-20C?
M63540/1-20C is a M63540/1-20C.
What parts can replace M63540/1-20C?
There are 3 known substitutes for M63540/1-20C: MIL-S-63540/1, NASM63540, 70-730247-1. Substitute compatibility should be verified for your specific system.
What is the NSN for M63540/1-20C?
M63540/1-20C is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-171-3788. This indicates validated use in U.S. government and defense supply chains.
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