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Technical Data Sheet
PartsTable / COMPONENT / 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1
5/8-11UNC-2A X 2 3/4,TYIV,CLASL1 ✓ 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 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1 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 5307-01-389-8214, 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
5/8-11UNC-2A X 2 3/4,TYIV,CLASL1
NSN: 5307-01-389-8214
FSC: 5307
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number5/8-11UNC-2A X 2 3/4,TYIV,CLASL1
NSN5307-01-389-8214
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1 · 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
•
CRITICALITY CODE JUSTIFICATION: ZZZW
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMSOL INSTRUCTION FOR LEVEL 1 ITEMS
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
•
MATERIAL: NICKEL ALLOY
•
NONDEFINITIVE SPEC/STD DATA: 4 TYPE
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZW
DEPARTURE FROM CITED DOCUMENTMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMSOL INSTRUCTION FOR LEVEL 1 ITEMS
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
MATERIALNICKEL ALLOY
NONDEFINITIVE SPEC/STD DATA4 TYPE
OVERALL LENGTH2.750 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 10
1/2-13UNC-2Z X 5, TYI CLASS AL1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222L1Interchangeable
interchangeable cross-reference
interchangeable
QQ-N-281, GRADE 400, CLASS AL1Interchangeable
interchangeable cross-reference
interchangeable
0.250-20UNRC-3A X 1.000Interchangeable
interchangeable cross-reference
interchangeable
211052570L1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222TYII GR400 SLF-LKGInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1?
5/8-11UNC-2A X 2 3/4,TYIV,CLASL1 is a 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1.
What parts can replace 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1?
There are 10 known substitutes for 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1: 1/2-13UNC-2Z X 5, TYI CLASS AL1, MIL-DTL-1222L1, QQ-N-281, GRADE 400, CLASS AL1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 5/8-11UNC-2A X 2 3/4,TYIV,CLASL1?
5/8-11UNC-2A X 2 3/4,TYIV,CLASL1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-389-8214. 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