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Technical Data Sheet
PartsTable / COMPONENT / 3/4-10UNC-3A X 3 1/2 TYIV CLASL1
3/4-10UNC-3A X 3 1/2 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 3/4-10UNC-3A X 3 1/2 TYIV CLASL1 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-187-4938, 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
3/4-10UNC-3A X 3 1/2 TYIV CLASL1
NSN: 5307-01-187-4938
FSC: 5307
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number3/4-10UNC-3A X 3 1/2 TYIV CLASL1
NSN5307-01-187-4938
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 3/4-10UNC-3A X 3 1/2 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
•
MATERIAL: NICKEL ALLOY
•
NOMINAL THREAD SIZE: 0.750 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
•
CRITICALITY CODE JUSTIFICATION: ZZZX
•
THREAD QUANTITY PER INCH: 10 LOCATION NOT OTHERWISE SPECIFIED
•
THREAD CLASS: 3A LOCATION NOT OTHERWISE SPECIFIED A
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALNICKEL ALLOY
NOMINAL THREAD SIZE0.750 INCHES LOCATION NOT OTHERWISE SPECIFIED IN
CRITICALITY CODE JUSTIFICATIONZZZX
THREAD QUANTITY PER INCH10 LOCATION NOT OTHERWISE SPECIFIED
OVERALL LENGTH3.500 INCHES NOMINAL IN
THREAD CLASS3A LOCATION NOT OTHERWISE SPECIFIED A
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC) LOCATION NOT OTHERWISE SPECIFIED
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
DEPARTURE FROM CITED DESIGNATORMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
7/8-9UNC-2A X 4IN CLASS A TYPL1Interchangeable
interchangeable cross-reference
interchangeable
MS35311-217Interchangeable
interchangeable cross-reference
interchangeable
MS35311-217L1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 QQ-N-281 GR400L1Interchangeable
interchangeable cross-reference
interchangeable
3/4-10UNC-2A X 2 3/4 TYPE 1 CLL1Interchangeable
interchangeable cross-reference
interchangeable
MIL-DTL-1222 QQ-N-281 GR400Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3/4-10UNC-3A X 3 1/2 TYIV CLASL1?
3/4-10UNC-3A X 3 1/2 TYIV CLASL1 is a 3/4-10UNC-3A X 3 1/2 TYIV CLASL1.
What parts can replace 3/4-10UNC-3A X 3 1/2 TYIV CLASL1?
There are 23 known substitutes for 3/4-10UNC-3A X 3 1/2 TYIV CLASL1: 7/8-9UNC-2A X 4IN CLASS A TYPL1, MS35311-217, MS35311-217L1 and 20 more. Substitute compatibility should be verified for your specific system.
Is 3/4-10UNC-3A X 3 1/2 TYIV CLASL1 still available?
3/4-10UNC-3A X 3 1/2 TYIV CLASL1 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