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Technical Data Sheet
PartsTable / COMPONENT / 5/8-11 UNC-2A X 3.00 LG
5/8-11 UNC-2A X 3.00 LG ✓ 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 5/8-11 UNC-2A X 3.00 LG 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 5306-00-227-0932, 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
5/8-11 UNC-2A X 3.00 LG
NSN: 5306-00-227-0932
FSC: 5306
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
Part Number5/8-11 UNC-2A X 3.00 LG
NSN5306-00-227-0932
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5/8-11 UNC-2A X 3.00 LG · 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 QUANTITY PER INCH: 11
•
WIDTH BETWEEN FLATS: 0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
•
HEAD HEIGHT: 0.391 INCHES NOMINAL IN
•
DEPARTURE FROM CITED DESIGNATOR: AS MOD BY MATERIAL SPEC
•
NOMINAL THREAD DIAMETER: 0.625 INCHES IN
•
THREAD LENGTH: 1.500 INCHES MINIMUM IN
•
MATERIAL: STEEL COMP 410 OR STEEL COMP 416 OVERALL
•
SURFACE TREATMENT: PASSIVATE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
THREAD QUANTITY PER INCH11
WIDTH BETWEEN FLATS0.906 INCHES MINIMUM AND 0.937 INCHES MAXIMUM IN
HEAD HEIGHT0.391 INCHES NOMINAL IN
DEPARTURE FROM CITED DESIGNATORAS MOD BY MATERIAL SPEC
NOMINAL THREAD DIAMETER0.625 INCHES IN
THREAD LENGTH1.500 INCHES MINIMUM IN
MATERIALSTEEL COMP 410 OR STEEL COMP 416 OVERALL
SURFACE TREATMENTPASSIVATE OVERALL
FASTENER LENGTH3.000 INCHES NOMINAL IN
HEAD STYLEHEXAGON
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
AN10H20AUpgraded Successor
successor cross-reference
successor
MIL-DTL-1222JUpgraded Successor
successor cross-reference
successor
T857Upgraded Successor
successor cross-reference
successor
MILS1222Upgraded Successor
successor cross-reference
successor
2A-4639Upgraded Successor
successor cross-reference
successor
MILB857Upgraded Successor
successor cross-reference
successor
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5/8-11 UNC-2A X 3.00 LG?
5/8-11 UNC-2A X 3.00 LG is a 5/8-11 UNC-2A X 3.00 LG.
What parts can replace 5/8-11 UNC-2A X 3.00 LG?
There are 21 known substitutes for 5/8-11 UNC-2A X 3.00 LG: AN10H20A, MIL-DTL-1222J, T857 and 18 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5/8-11 UNC-2A X 3.00 LG?
5/8-11 UNC-2A X 3.00 LG is cataloged in the Federal Logistics Information System (FLIS) under NSN 5306-00-227-0932. 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