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PartsTable / COMPONENT / 803-5001003 PIECE NO. 156
803-5001003 PIECE NO. 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 803-5001003 PIECE NO. 156 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 5305-01-339-9560, 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 PIECE NO. 156
NSN: 5305-01-339-9560
FSC: 5305
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
Part Number803-5001003 PIECE NO. 156
NSN5305-01-339-9560
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: 803-5001003 PIECE NO. 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 CLASS: 2A A
•
THREAD QUANTITY PER INCH: 14
•
THREAD DIRECTION: RIGHT-HAND
•
THREAD SERIES DESIGNATOR: UNIFIED NATIONAL COARSE (UNC)
•
MATERIAL: NICKEL ALLOY OVERALL
•
DEPARTURE FROM CITED DOCUMENT: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS2A A
SPECIAL FEATURESOVER ALL LENGTH 4.50IN IN
THREAD QUANTITY PER INCH14
THREAD DIRECTIONRIGHT-HAND
THREAD SERIES DESIGNATORUNIFIED NATIONAL COARSE (UNC)
MATERIALNICKEL ALLOY OVERALL
DEPARTURE FROM CITED DOCUMENTMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
HEAD STYLEHEXAGON
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 33
501-4675682 ITEM 4Interchangeable
interchangeable cross-reference
interchangeable
501-4675682 ITEM 4L1Interchangeable
interchangeable cross-reference
interchangeable
1.500-06UNC-2A X 5.000L1Interchangeable
interchangeable cross-reference
interchangeable
2642-774-01 ITEM 31L1Interchangeable
interchangeable cross-reference
interchangeable
QQ-N-286, GRADE 500Interchangeable
interchangeable cross-reference
interchangeable
FF-S-86, TYPE VI SELF-LOCKINGL1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 803-5001003 PIECE NO. 156?
803-5001003 PIECE NO. 156 is a 803-5001003 PIECE NO. 156.
What parts can replace 803-5001003 PIECE NO. 156?
There are 33 known substitutes for 803-5001003 PIECE NO. 156: 501-4675682 ITEM 4, 501-4675682 ITEM 4L1, 1.500-06UNC-2A X 5.000L1 and 30 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 803-5001003 PIECE NO. 156?
803-5001003 PIECE NO. 156 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5305-01-339-9560. 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