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MB61-8D45 — BOLT,CLOSE TOLERANCE

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

MB61-8D45: BOLT,CLOSE TOLERANCE.

The BOLT,CLOSE TOLERANCE is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, head_style: DOUBLE HEXAGON, grip_length: 2.802 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN, head_height: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN, thread_class: 3A A, grip_diameter: 0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-357-1903, 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
MB61-8D45
NSN: 5306-00-357-1903
FSC: 5306 — Bolts
CAGE: L4528 — LISI AEROSPACE CANADA CORP DIV HI SHEAR HOLDINGS INC (CAN)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
head_styleDOUBLE HEXAGON
grip_length2.802 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN
head_height0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
thread_class3A A
grip_diameter0.4990 INCHES MINIMUM AND 0.4995 INCHES MAXIMUM IN
thread_length0.623 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
fastener_length3.445 INCHES MINIMUM AND 3.492 INCHES MAXIMUM IN
thread_directionRIGHT-HAND
width_between_flats0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
end_item_identificationAIRCRAFT, EAGLE F-15
nominal_thread_diameter0.500 INCHES IN
NSN5306-00-357-1903
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MB61-8D45 · 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
•
HEAD HEIGHT: 0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
•
FASTENER LENGTH: 3.445 INCHES MINIMUM AND 3.492 INCHES MAXIMUM IN
•
THREAD LENGTH: 0.623 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
•
SHANK UNTHREADED HOLE DIAMETER: 0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
•
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
•
HEAD STYLE: DOUBLE HEXAGON
•
THREAD DIRECTION: RIGHT-HAND
•
SPECIFICATION/STANDARD DATA: 08524-B-17019 MANUFACTURERS STANDARD
TECHNICAL CHARACTERISTICS
HEAD HEIGHT0.271 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN
FASTENER LENGTH3.445 INCHES MINIMUM AND 3.492 INCHES MAXIMUM IN
THREAD LENGTH0.623 INCHES MINIMUM AND 0.690 INCHES MAXIMUM IN
SHANK UNTHREADED HOLE DIAMETER0.106 INCHES MINIMUM AND 0.111 INCHES MAXIMUM FIRST HOLE IN
NOMINAL THREAD DIAMETER0.500 INCHES IN
HEAD STYLEDOUBLE HEXAGON
THREAD DIRECTIONRIGHT-HAND
SPECIFICATION/STANDARD DATA08524-B-17019 MANUFACTURERS STANDARD
GRIP LENGTH2.802 INCHES MINIMUM AND 2.822 INCHES MAXIMUM IN
WIDTH BETWEEN FLATS0.741 INCHES MINIMUM AND 0.752 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 8
S11-1060-8D45Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
109453-8D45Reference document
Same NSN cross-reference
Reference document — Secondary reference
FIT7047-8D45Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
US3204-8D45Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
AIC753-8D45Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
GS1016-8D45Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MB61-8D45?
MB61-8D45 is a BOLT,CLOSE TOLERANCE.
What parts can replace MB61-8D45?
There are 8 known substitutes for MB61-8D45: S11-1060-8D45, 109453-8D45, FIT7047-8D45 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MB61-8D45?
MB61-8D45 is cataloged in the U.S. Government catalog under NSN 5306-00-357-1903. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.