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Technical Data Sheet
PartsTable / COMPONENT / 70M4
70M4 ✓ 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 BOLT,HOOK is a the manufacturer industrial component. Key specifications include thread_class: 2A A, thread_length: 2.500 INCHES MINIMUM IN, style_designator: ROUND BEND, thread_direction: RIGHT-HAND, hook_inside_width: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN, nominal_thread_diameter: 0.437 INCHES IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-770-5713, 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
70M4
NSN: 5306-00-770-5713
FSC: 5306
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
thread_class2A A
thread_length2.500 INCHES MINIMUM IN
style_designatorROUND BEND
thread_directionRIGHT-HAND
hook_inside_width0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
nominal_thread_diameter0.437 INCHES IN
thread_quantity_per_inch14
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
distance_from_inside_of_bend_to_shank_end7.375 INCHES NOMINAL IN
distance_from_inside_center_of_bend_to_hook_end0.719 INCHES NOMINAL IN
NSN5306-00-770-5713
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 70M4 · 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
•
DISTANCE FROM INSIDE CENTER OF BEND TO HOOK END: 0.719 INCHES NOMINAL IN
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 14
•
THREAD LENGTH: 2.500 INCHES MINIMUM IN
•
STYLE DESIGNATOR: ROUND BEND
•
HOOK INSIDE WIDTH: 0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
DISTANCE FROM INSIDE CENTER OF BEND TO HOOK END0.719 INCHES NOMINAL IN
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH14
THREAD LENGTH2.500 INCHES MINIMUM IN
STYLE DESIGNATORROUND BEND
HOOK INSIDE WIDTH0.505 INCHES MINIMUM AND 0.525 INCHES MAXIMUM IN
THREAD CLASS2A A
DISTANCE FROM INSIDE OF BEND TO SHANK END7.375 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.437 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
K71640Interchangeable
interchangeable cross-reference
interchangeable
2739Interchangeable
interchangeable cross-reference
interchangeable
175-191Interchangeable
interchangeable cross-reference
interchangeable
922573-1DInterchangeable
interchangeable cross-reference
interchangeable
2739C48Interchangeable
interchangeable cross-reference
interchangeable
N6485Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 70M4?
70M4 is a BOLT,HOOK.
What parts can replace 70M4?
There are 17 known substitutes for 70M4: K71640, 2739, 175-191 and 14 more. Substitute compatibility should be verified for your specific system.
Is 70M4 still available?
70M4 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026