PartsTable
Technical Data Sheet
801-6408778 FIND 18L1 ✓ 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 SCREW,CAP,SOCKET HEAD is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, thread_class: 3A A, fastener_length: 2.250 INCHES MAXIMUM IN, special_features: SCREW, CAP, SOCKET HEAD, SELF LOCKING (REQUESTED NAME), end_item_identification: BALL VALVE, nominal_thread_diameter: 0.750 INCHES IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-349-6831, 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
801-6408778 FIND 18L1
NSN: 5305-01-349-6831
FSC: 5305
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class3A A
fastener_length2.250 INCHES MAXIMUM IN
special_featuresSCREW, CAP, SOCKET HEAD, SELF LOCKING (REQUESTED NAME)
end_item_identificationBALL VALVE
nominal_thread_diameter0.750 INCHES IN
thread_quantity_per_inch10
thread_series_designatorUNRC
criticality_code_justificationZZZX
departure_from_cited_designatorMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
material_document_and_classificationQQ-N-286 GR500 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5305-01-349-6831
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 801-6408778 FIND 18L1 · 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: ZZZY
THREAD DIRECTION: RIGHT-HAND
MATERIAL: NICKEL ALLOY OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
THREAD SERIES DESIGNATOR: UNRC
THREAD QUANTITY PER INCH: 10
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
CRITICALITY CODE JUSTIFICATIONZZZY
THREAD DIRECTIONRIGHT-HAND
MATERIALNICKEL ALLOY OVERALL
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
THREAD SERIES DESIGNATORUNRC
THREAD QUANTITY PER INCH10
END ITEM IDENTIFICATIONVALVE BALL
THREAD CLASS3A A
NOMINAL THREAD DIAMETER0.750 INCHES IN
FASTENER LENGTH2.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 8
801-6408778 FIND 18L1Interchangeable
interchangeable cross-reference
interchangeable
211068837L1Interchangeable
interchangeable cross-reference
interchangeable
0.750-10UNRC-3A X 2.250L1Interchangeable
interchangeable cross-reference
interchangeable
211056594L1Interchangeable
Same NIIN cross-reference
interchangeable
DF330635 FIND 18L1Interchangeable
Same NIIN cross-reference
interchangeable
DF330635 FIND 18Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 801-6408778 FIND 18L1?
801-6408778 FIND 18L1 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 801-6408778 FIND 18L1?
There are 8 known substitutes for 801-6408778 FIND 18L1: 801-6408778 FIND 18L1, 211068837L1, 0.750-10UNRC-3A X 2.250L1 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 801-6408778 FIND 18L1?
801-6408778 FIND 18L1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-349-6831. This indicates validated use in U.S. government and defense supply chains.
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