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Technical Data Sheet
PartsTable / COMPONENT / 0.250-20UNC-2AX1.25 NICUAL
0.250-20UNC-2AX1.25 NICUAL ✓ 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 0.250-20UNC-2AX1.25 NICUAL is a the manufacturer industrial component. This product is currently in active production with full OEM support. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-599-5054, 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
0.250-20UNC-2AX1.25 NICUAL
NSN: 5305-01-599-5054
FSC: 5305
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number0.250-20UNC-2AX1.25 NICUAL
NSN5305-01-599-5054
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 0.250-20UNC-2AX1.25 NICUAL · 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
•
FASTENER LENGTH: 1.250 INCHES NOMINAL IN
•
NOMINAL THREAD DIAMETER: 0.250 INCHES IN
•
THREAD CLASS: 2A A
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD QUANTITY PER INCH: 20
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
FASTENER LENGTH1.250 INCHES NOMINAL IN
NOMINAL THREAD DIAMETER0.250 INCHES IN
THREAD CLASS2A A
THREAD DIRECTIONRIGHT-HAND
THREAD QUANTITY PER INCH20
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALNICKEL ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
709-8500409 ITEM 35-2Interchangeable
interchangeable cross-reference
interchangeable
709-8500409Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 TYPE I GR 500Interchangeable
interchangeable cross-reference
interchangeable
709-8345733-004-009Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 0.250-20UNC-2AX1.25 NICUAL?
0.250-20UNC-2AX1.25 NICUAL is a 0.250-20UNC-2AX1.25 NICUAL.
What parts can replace 0.250-20UNC-2AX1.25 NICUAL?
There are 4 known substitutes for 0.250-20UNC-2AX1.25 NICUAL: 709-8500409 ITEM 35-2, 709-8500409, MIL-DTL-1222 TYPE I GR 500 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 0.250-20UNC-2AX1.25 NICUAL?
0.250-20UNC-2AX1.25 NICUAL is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-599-5054. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026