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Technical Data Sheet
PartsTable / COMPONENT / MAS12561
MAS12561 ✓ 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,MACHINE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, fastener_length: 4.750 INCHES NOMINAL IN, special_features: 9/16-18 X 4.75 GRADE 5 PLAIN FINISH HEX CAP SCREW, end_item_identification: JERRV 4X4 EOD, 2355-01-532-2174, nominal_thread_diameter: 0.562 INCHES IN, thread_quantity_per_inch: 18. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-01-553-1323, 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
MAS12561
NSN: 5306-01-553-1323
FSC: 5306
CAGE: U7887 — NP AEROSPACE LIMITED (GBR)
SPECIFICATIONS
materialSTEEL OVERALL
fastener_length4.750 INCHES NOMINAL IN
special_features9/16-18 X 4.75 GRADE 5 PLAIN FINISH HEX CAP SCREW
end_item_identificationJERRV 4X4 EOD, 2355-01-532-2174
nominal_thread_diameter0.562 INCHES IN
thread_quantity_per_inch18
thread_series_designatorUNIFIED NATIONAL COARSE (UNC)
part_name_assigned_by_controlling_agencyBOLT
NSN5306-01-553-1323
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: MAS12561 · 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 SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
NOMINAL THREAD DIAMETER: 0.562 INCHES IN
•
THREAD QUANTITY PER INCH: 18
•
FASTENER LENGTH: 4.750 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
PART NAME ASSIGNED BY CONTROLLING AGENCYBOLT
SPECIAL FEATURES9/16-18 X 4.75 GRADE 5 PLAIN FINISH HEX CAP SCREW
NOMINAL THREAD DIAMETER0.562 INCHES IN
THREAD QUANTITY PER INCH18
END ITEM IDENTIFICATIONJERRV 4X4 EOD, 2355-01-532-2174
FASTENER LENGTH4.750 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
9626BB0440-3Interchangeable
interchangeable cross-reference
interchangeable
4200Interchangeable
interchangeable cross-reference
interchangeable
ASME B94.19Interchangeable
interchangeable cross-reference
interchangeable
1561-0625Interchangeable
interchangeable cross-reference
interchangeable
53410Interchangeable
interchangeable cross-reference
interchangeable
162-72Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MAS12561?
MAS12561 is a BOLT,MACHINE.
What parts can replace MAS12561?
There are 15 known substitutes for MAS12561: 9626BB0440-3, 4200, ASME B94.19 and 12 more. Substitute compatibility should be verified for your specific system.
Is MAS12561 still available?
MAS12561 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