PartsTable
Technical Data Sheet
803-5001003-X8XX-156 ✓ 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, thread_length: 5.250 INCHES NOMINAL IN, special_features: USED ON ONE-QUARTER TO TWO AND ONE HALF INCH BALL VALVE, thread_direction: RIGHT-HAND, end_item_identification: BALL VALVE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-477-9035, 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
803-5001003-X8XX-156
NSN: 5305-01-477-9035
FSC: 5305
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
thread_class3A A
thread_length5.250 INCHES NOMINAL IN
special_featuresUSED ON ONE-QUARTER TO TWO AND ONE HALF INCH BALL VALVE
thread_directionRIGHT-HAND
end_item_identificationBALL VALVE
nominal_thread_diameter0.500 INCHES IN
thread_quantity_per_inch13
thread_series_designatorUNRC
material_document_and_classificationMIL-S-1222 TY II MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5305-01-477-9035
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 803-5001003-X8XX-156 · 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 LENGTH: 5.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S-1222 TY II MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIAL: NICKEL ALLOY OVERALL
THREAD DIRECTION: RIGHT-HAND
THREAD SERIES DESIGNATOR: UNRC
NOMINAL THREAD DIAMETER: 0.500 INCHES IN
THREAD CLASS: 3A A
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESUSED ON ONE-QUARTER TO TWO AND ONE HALF INCH BALL VALVE
THREAD LENGTH5.250 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S-1222 TY II MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
MATERIALNICKEL ALLOY OVERALL
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNRC
NOMINAL THREAD DIAMETER0.500 INCHES IN
THREAD CLASS3A A
THREAD QUANTITY PER INCH13
END ITEM IDENTIFICATIONBALL VALVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
803-5001003 ITEM 156L1Interchangeable
interchangeable cross-reference
interchangeable
1/2-13UNRC-3A X 5 1/4NICUALInterchangeable
interchangeable cross-reference
interchangeable
1/2-13UNRC-3A X 5 1/4NICUALL1Interchangeable
interchangeable cross-reference
interchangeable
0.500-13UNRC-3A-5.25LG NICUALInterchangeable
Same NIIN cross-reference
interchangeable
803-5001003Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 803-5001003-X8XX-156?
803-5001003-X8XX-156 is a SCREW,CAP,SOCKET HEAD.
What parts can replace 803-5001003-X8XX-156?
There are 5 known substitutes for 803-5001003-X8XX-156: 803-5001003 ITEM 156L1, 1/2-13UNRC-3A X 5 1/4NICUAL, 1/2-13UNRC-3A X 5 1/4NICUALL1 and 2 more. Substitute compatibility should be verified for your specific system.
Is 803-5001003-X8XX-156 still available?
803-5001003-X8XX-156 is currently cancelled.
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