PartsTable
Technical Data Sheet
PartsTable / COMPONENT / NASM63540
NASM63540 ✓ 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, head_length: 0.105 INCHES NOMINAL IN, thread_class: 2A STUD THREAD A, head_diameter: 0.241 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN, thread_length: 0.770 INCHES NOMINAL STUD THREAD IN, overall_length: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN. 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
NASM63540
NSN: 5307-01-171-3788
FSC: 5307
CAGE: 80205 — NATIONAL AEROSPACE STANDARDS COMMITTEE AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA INC NOT FOR RFQ OR SOLICITATION USE (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING
head_length0.105 INCHES NOMINAL IN
thread_class2A STUD THREAD A
head_diameter0.241 INCHES MINIMUM AND 0.271 INCHES MAXIMUM IN
thread_length0.770 INCHES NOMINAL STUD THREAD IN
overall_length0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN
locking_featureSELF-CLINCHING HEAD
style_designatorSELF-LOCKING
thread_directionRIGHT-HAND STUD THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.190 INCHES STUD THREAD IN
distance_across_flats0.297 INCHES MINIMUM AND 0.327 INCHES MAXIMUM IN
NSN5307-01-171-3788
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: NASM63540 · 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
•
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 DIRECTIONRIGHT-HAND NUT THREAD
HEAD LENGTH0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
THREAD CLASS2A NUT THREAD A
THREAD LENGTH0.270 INCHES MINIMUM AND 0.310 INCHES MAXIMUM NUT THREAD IN
STYLE DESIGNATORSELF-LOCKING
LOCKING FEATURESELF-CLINCHING HEAD
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) NUT THREAD
NOMINAL THREAD SIZE0.164 INCHES NUT THREAD IN
MATERIALSTEEL 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
THREAD QUANTITY PER INCH32 NUT THREAD
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
MIL-S-63540/1Interchangeable
Same NIIN cross-reference
interchangeable
M63540/1-20CInterchangeable
Same NIIN cross-reference
interchangeable
70-730247-1Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy NASM63540?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is NASM63540?
NASM63540 is a STUD,SELF-LOCKING.
What parts can replace NASM63540?
There are 3 known substitutes for NASM63540: MIL-S-63540/1, M63540/1-20C, 70-730247-1. Substitute compatibility should be verified for your specific system.
What is the NSN for NASM63540?
NASM63540 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.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — NASM63540

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026