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Technical Data Sheet
PartsTable / COMPONENT / M161-6
M161-6 ✓ 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 STUD,SELF-LOCKING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING, thread_class: 2A NUT THREAD A, head_diameter: 0.219 INCHES NOMINAL IN, thread_length: 0.420 INCHES NOMINAL NUT THREAD IN, overall_length: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN, locking_feature: SELF-CLINCHING HEAD. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-242-8747, 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
M161-6
NSN: 5307-01-242-8747
FSC: 5307
CAGE: 54418 — MILTOPE CORPORATION (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
thread_class2A NUT THREAD A
head_diameter0.219 INCHES NOMINAL IN
thread_length0.420 INCHES NOMINAL NUT THREAD IN
overall_length0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
locking_featureSELF-CLINCHING HEAD
style_designatorSELF-LOCKING
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.138 INCHES NUT THREAD IN
thread_quantity_per_inch32 NUT THREAD
thread_series_designatorUNIFIED NATIONAL COARSE (UNC) NUT THREAD
NSN5307-01-242-8747
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: M161-6 · 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
•
NOMINAL THREAD SIZE: 0.138 INCHES NUT THREAD IN
•
THREAD DIRECTION: RIGHT-HAND NUT THREAD
•
STYLE DESIGNATOR: SELF-LOCKING
•
THREAD QUANTITY PER INCH: 32 NUT THREAD
•
MATERIAL: STEEL CORROSION RESISTING
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
LOCKING FEATURESELF-CLINCHING HEAD
NOMINAL THREAD SIZE0.138 INCHES NUT THREAD IN
THREAD DIRECTIONRIGHT-HAND NUT THREAD
STYLE DESIGNATORSELF-LOCKING
THREAD QUANTITY PER INCH32 NUT THREAD
MATERIALSTEEL CORROSION RESISTING
SURFACE TREATMENTPASSIVATE OVERALL
OVERALL LENGTH0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN
HEAD DIAMETER0.219 INCHES NOMINAL IN
THREAD LENGTH0.420 INCHES NOMINAL NUT THREAD IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
FFS92TYPE1STYLE9SInterchangeable
interchangeable cross-reference
interchangeable
MECD368696-6Interchangeable
interchangeable cross-reference
interchangeable
100-7S6-8Interchangeable
interchangeable cross-reference
interchangeable
0323006-01Interchangeable
interchangeable cross-reference
interchangeable
63-2-8Interchangeable
interchangeable cross-reference
interchangeable
59823Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is M161-6?
M161-6 is a STUD,SELF-LOCKING.
What parts can replace M161-6?
There are 14 known substitutes for M161-6: FFS92TYPE1STYLE9S, MECD368696-6, 100-7S6-8 and 11 more. Substitute compatibility should be verified for your specific system.
What is the NSN for M161-6?
M161-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-242-8747. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026