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Technical Data Sheet
PartsTable / COMPONENT / 1/2-13UNC-2AX5 1/2LG
1/2-13UNC-2AX5 1/2LG ✓ 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 1/2-13UNC-2AX5 1/2LG is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-174-9477, 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
1/2-13UNC-2AX5 1/2LG
NSN: 5306-00-174-9477
FSC: 5306
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number1/2-13UNC-2AX5 1/2LG
NSN5306-00-174-9477
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 1/2-13UNC-2AX5 1/2LG · 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-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
•
HARDNESS RATING: 100.0 ROCKWELL B NOMINAL OVERALL
•
NONDEFINITIVE SPEC/STD DATA: 2,GR 1 TYPE
•
SURFACE TREATMENT: ZINC OVERALL
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
FASTENER LENGTH: 5.500 INCHES NOMINAL IN
•
FEATURES PROVIDED: FINISHED HEAD
•
THREAD CLASS: 2A A
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-Z-325,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
HARDNESS RATING100.0 ROCKWELL B NOMINAL OVERALL
NONDEFINITIVE SPEC/STD DATA2,GR 1 TYPE
SURFACE TREATMENTZINC OVERALL
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
FASTENER LENGTH5.500 INCHES NOMINAL IN
FEATURES PROVIDEDFINISHED HEAD
THREAD CLASS2A A
HEAD HEIGHT0.312 INCHES NOMINAL IN
THREAD DIRECTIONRIGHT-HAND
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
102484Upgraded Successor
successor cross-reference
successor
FFB575Upgraded Successor
successor cross-reference
successor
MS35354-201Upgraded Successor
successor cross-reference
successor
102495Upgraded Successor
successor cross-reference
successor
109177Upgraded Successor
successor cross-reference
successor
131286Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/2-13UNC-2AX5 1/2LG?
1/2-13UNC-2AX5 1/2LG is a 1/2-13UNC-2AX5 1/2LG.
What parts can replace 1/2-13UNC-2AX5 1/2LG?
There are 15 known substitutes for 1/2-13UNC-2AX5 1/2LG: 102484, FFB575, MS35354-201 and 12 more. Substitute compatibility should be verified for your specific system.
Is 1/2-13UNC-2AX5 1/2LG still available?
1/2-13UNC-2AX5 1/2LG 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