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PartsTable / COMPONENT / M63540/1-6
M63540/1-6 ✓ Verified by PartsTable
— · BOLT SCREW
WHAT YOU NEED TO KNOW
Grade/class stamped on head determines strength Metric and imperial threads look similar — measure pitch
Verify thread pitch — metric != imperial
PRODUCT OVERVIEW

The M63540/1-6 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-189-6353, 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
M63540/1-6
NSN: 5307-01-189-6353
FSC: 5307
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part NumberM63540/1-6
NSN5307-01-189-6353
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M63540/1-6 · OEM ⚠ VERIFY BEFORE ORDERING Verify thread pitch before ordering — metric (M8×1.25) ≠ imperial (5/16-18). Wrong thread = wrong part. Grade/class stamped on bolt head determines tensile strength ✓ BROKER TIP Grade/class stamped on head determines tensile strength. Grade 8 > Grade 5 > Grade 2. Always confirm head marking matches specification requirement PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LOCKING FEATURE: SELF-CLINCHING HEAD
•
HEAD LENGTH: 0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
•
THREAD QUANTITY PER INCH: 40 NUT THREAD
•
NOMINAL THREAD SIZE: 0.112 INCHES NUT THREAD IN
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
THREAD CLASS: 2A NUT THREAD A
•
STYLE DESIGNATOR: SELF-LOCKING
•
SURFACE TREATMENT: CADMIUM AND CHROMATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
LOCKING FEATURESELF-CLINCHING HEAD
HEAD LENGTH0.075 INCHES MINIMUM AND 0.085 INCHES MAXIMUM IN
THREAD QUANTITY PER INCH40 NUT THREAD
NOMINAL THREAD SIZE0.112 INCHES NUT THREAD IN
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TYPE 2,CLASS 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
THREAD CLASS2A NUT THREAD A
STYLE DESIGNATORSELF-LOCKING
SURFACE TREATMENTCADMIUM AND CHROMATE OVERALL
THREAD LENGTH0.150 INCHES MINIMUM AND 0.190 INCHES MAXIMUM NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
S4402Interchangeable
interchangeable cross-reference
interchangeable
0405-05Interchangeable
interchangeable cross-reference
interchangeable
S-440-2CXInterchangeable
interchangeable cross-reference
interchangeable
47-00213-001Interchangeable
interchangeable cross-reference
interchangeable
24550Interchangeable
interchangeable cross-reference
interchangeable
FH-440-4C1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M63540/1-6?
M63540/1-6 is a M63540/1-6.
What parts can replace M63540/1-6?
There are 13 known substitutes for M63540/1-6: S4402, 0405-05, S-440-2CX and 10 more. Substitute compatibility should be verified for your specific system.
Is M63540/1-6 still available?
M63540/1-6 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026