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Technical Data Sheet
PartsTable / COMPONENT / 3/8-16UNC-2A X 1 1/4 INCHESL1
3/8-16UNC-2A X 1 1/4 INCHESL1 ✓ 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 3/8-16UNC-2A X 1 1/4 INCHESL1 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 5305-01-290-0019, 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
3/8-16UNC-2A X 1 1/4 INCHESL1
NSN: 5305-01-290-0019
FSC: 5305
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number3/8-16UNC-2A X 1 1/4 INCHESL1
NSN5305-01-290-0019
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3/8-16UNC-2A X 1 1/4 INCHESL1 · 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
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
DEPARTURE FROM CITED DESIGNATOR: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
•
CRITICALITY CODE JUSTIFICATION: ZZZW
TECHNICAL CHARACTERISTICS (FLIS)
DEPARTURE FROM CITED DOCUMENTMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
DEPARTURE FROM CITED DESIGNATORQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 31
5/8-11UNC-2A X 4 1/2 INCHESL1Interchangeable
interchangeable cross-reference
interchangeable
QQ-N-281 GRADE 400, CLASS AInterchangeable
interchangeable cross-reference
interchangeable
5/8-11UNC-2A X 4 1/2 INCHESInterchangeable
interchangeable cross-reference
interchangeable
24573N PIECE 22Interchangeable
interchangeable cross-reference
interchangeable
1/2-13 UNC-2B,TYPE 1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 TYPE IL1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/8-16UNC-2A X 1 1/4 INCHESL1?
3/8-16UNC-2A X 1 1/4 INCHESL1 is a 3/8-16UNC-2A X 1 1/4 INCHESL1.
What parts can replace 3/8-16UNC-2A X 1 1/4 INCHESL1?
There are 31 known substitutes for 3/8-16UNC-2A X 1 1/4 INCHESL1: 5/8-11UNC-2A X 4 1/2 INCHESL1, QQ-N-281 GRADE 400, CLASS A, 5/8-11UNC-2A X 4 1/2 INCHES and 28 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3/8-16UNC-2A X 1 1/4 INCHESL1?
3/8-16UNC-2A X 1 1/4 INCHESL1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-290-0019. 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