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Technical Data Sheet

MIL-S-63540/1 — Technical Data Sheet

✓ 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 COMP 303 OR STEEL COMP 303SE, head_length: 0.105 INCHES NOMINAL IN, thread_class: 2A NUT THREAD A, head_diameter: 0.256 INCHES NOMINAL IN, thread_length: 0.645 INCHES NOMINAL NUT THREAD IN, overall_length: 0.750 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-157-9684, 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
MIL-S-63540/1
NSN: 5307-01-157-9684
FSC: 5307
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialSTEEL COMP 303 OR STEEL COMP 303SE
head_length0.105 INCHES NOMINAL IN
thread_class2A NUT THREAD A
head_diameter0.256 INCHES NOMINAL IN
thread_length0.645 INCHES NOMINAL NUT THREAD IN
overall_length0.750 INCHES NOMINAL IN
locking_featureSELF-CLINCHING HEAD
style_designatorSELF-LOCKING
thread_directionRIGHT-HAND NUT THREAD
surface_treatmentPASSIVATE OVERALL
nominal_thread_size0.190 INCHES NUT THREAD IN
end_item_identificationNSN 5840-01-412-9653
NSN5307-01-157-9684
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MIL-S-63540/1 · 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
•
STYLE DESIGNATOR: SELF-LOCKING
•
THREAD LENGTH: 0.395 INCHES MINIMUM AND 0.435 INCHES MAXIMUM 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
•
HEAD LENGTH: 0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
•
NOMINAL THREAD SIZE: 0.164 INCHES NUT THREAD IN
•
LOCKING FEATURE: SELF-CLINCHING HEAD
•
THREAD CLASS: 2A NUT THREAD A
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORSELF-LOCKING
OVERALL LENGTH0.485 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN
THREAD LENGTH0.395 INCHES MINIMUM AND 0.435 INCHES MAXIMUM 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
HEAD LENGTH0.080 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
NOMINAL THREAD SIZE0.164 INCHES NUT THREAD IN
LOCKING FEATURESELF-CLINCHING HEAD
THREAD CLASS2A NUT THREAD A
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) NUT THREAD
HEAD DIAMETER0.219 INCHES MINIMUM AND 0.249 INCHES MAXIMUM IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
134413-011Interchangeable
interchangeable cross-reference
interchangeable
FHS-832-8Interchangeable
interchangeable cross-reference
interchangeable
R10246P16Interchangeable
interchangeable cross-reference
interchangeable
5307PL1706182Interchangeable
Same NIIN cross-reference
interchangeable
5307PL1780576Interchangeable
Same NIIN cross-reference
interchangeable
721699-190Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MIL-S-63540/1?
MIL-S-63540/1 is a STUD,SELF-LOCKING.
What parts can replace MIL-S-63540/1?
There are 14 known substitutes for MIL-S-63540/1: 134413-011, FHS-832-8, R10246P16 and 11 more. Substitute compatibility should be verified for your specific system.
Is MIL-S-63540/1 still available?
MIL-S-63540/1 is currently cancelled.
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