PartsTable
Technical Data Sheet
D-1903L1 ✓ 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 STUD,SHOULDERED AND STEPPED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, thread_series: UNIFIED NATIONAL COARSE (UNC), nominal_thread_size: 0.625 INCHES IN, thread_quantity_per_inch: 11, nondefinitive_spec/std_data: 2 TYPE, departure_from_cited_document: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-377-1910, 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
D-1903L1
NSN: 5307-01-377-1910
FSC: 5307
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
materialSTEEL OVERALL
thread_seriesUNIFIED NATIONAL COARSE (UNC)
nominal_thread_size0.625 INCHES IN
thread_quantity_per_inch11
nondefinitive_spec/std_data2 TYPE
departure_from_cited_documentMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
criticality_code_justificationZZZW
NSN5307-01-377-1910
COMPONENT DIAGRAM
BOLT / SCREW — THREAD VERIFICATION REQUIRED Hex HEAD LENGTH: — THREAD: — × — MATERIAL: — PN: D-1903L1 · 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
NONDEFINITIVE SPEC/STD DATA: 1 TYPE
MATERIAL: STEEL
DEPARTURE FROM CITED DOCUMENT: QUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATION: ZZZW
TECHNICAL CHARACTERISTICS (FLIS)
NONDEFINITIVE SPEC/STD DATA1 TYPE
MATERIALSTEEL
DEPARTURE FROM CITED DOCUMENTQUALITY CONTROL IN ACCORDANCE WITH NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
CRITICALITY CODE JUSTIFICATIONZZZW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
5014174-005Interchangeable
interchangeable cross-reference
interchangeable
MDL1Interchangeable
interchangeable cross-reference
interchangeable
28053-1Interchangeable
interchangeable cross-reference
interchangeable
D-1903Interchangeable
interchangeable cross-reference
interchangeable
846261L1Interchangeable
interchangeable cross-reference
interchangeable
846261Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D-1903L1?
D-1903L1 is a STUD,SHOULDERED AND STEPPED.
What parts can replace D-1903L1?
There are 17 known substitutes for D-1903L1: 5014174-005, MDL1, 28053-1 and 14 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D-1903L1?
D-1903L1 is cataloged in the Federal Logistics Information System (FLIS) under NSN 5307-01-377-1910. This indicates validated use in U.S. government and defense supply chains.
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