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66C64280 — BOLT,HOOK

✓ Government record, cited
— · BOLT SCREW
PRODUCT OVERVIEW

66C64280: BOLT,HOOK.

The BOLT,HOOK is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1018 OVERALL, thread_class: 2A A, thread_length: 3.000 INCHES MINIMUM IN, style_designator: RIGHT ANGLE BEND, thread_direction: RIGHT-HAND, hook_inside_width: 0.751 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN. This part is cataloged in the U.S.

Government catalog under NSN 5306-00-135-7685, 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
66C64280
NSN: 5306-00-135-7685
FSC: 5306 — Bolts
CAGE: 98750 — SAN ANTONIO AIR LOGISTICS CENTER (USA)
SPECIFICATIONS
materialSTEEL COMP 1018 OVERALL
thread_class2A A
thread_length3.000 INCHES MINIMUM IN
style_designatorRIGHT ANGLE BEND
thread_directionRIGHT-HAND
hook_inside_width0.751 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
surface_treatmentCADMIUM OVERALL
nominal_thread_diameter0.375 INCHES IN
thread_quantity_per_inch16
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
material_document_and_classificationQQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
distance_from_inside_of_bend_to_shank_end7.688 INCHES MINIMUM AND 7.938 INCHES MAXIMUM IN
NSN5306-00-135-7685
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 66C64280 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
DISTANCE FROM INSIDE OF BEND TO SHANK END: 7.688 INCHES MINIMUM AND 7.938 INCHES MAXIMUM IN
•
THREAD LENGTH: 3.000 INCHES MINIMUM IN
•
HOOK INSIDE WIDTH: 0.751 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
•
STYLE DESIGNATOR: RIGHT ANGLE BEND
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
NOMINAL THREAD DIAMETER: 0.375 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 2,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
DISTANCE FROM INSIDE OF BEND TO SHANK END7.688 INCHES MINIMUM AND 7.938 INCHES MAXIMUM IN
THREAD LENGTH3.000 INCHES MINIMUM IN
HOOK INSIDE WIDTH0.751 INCHES MINIMUM AND 0.875 INCHES MAXIMUM IN
STYLE DESIGNATORRIGHT ANGLE BEND
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-634 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD DIAMETER0.375 INCHES IN
THREAD DIRECTIONRIGHT-HAND
SURFACE TREATMENTCADMIUM OVERALL
THREAD CLASS2A A
SUBSTITUTES & CROSS-REFERENCES 1
002935Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 66C64280?
66C64280 is a BOLT,HOOK.
What parts can replace 66C64280?
There is 1 known substitute for 66C64280: 002935. Substitute compatibility should be verified for your specific system.
What is the NSN for 66C64280?
66C64280 is cataloged in the U.S. Government catalog under NSN 5306-00-135-7685. 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.