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PartsTable / COMPONENT / 042-021983 PIECE 2L1#
042-021983 PIECE 2L1# ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The 042-021983 PIECE 2L1# 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 4730-01-160-5243, 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
042-021983 PIECE 2L1#
NSN: 4730-01-160-5243
FSC: 4730
CAGE: 03950 — NAVAL INVENTORY CONTROL POINT MECHANICSBURG (USA)
SPECIFICATIONS
Part Number042-021983 PIECE 2L1#
NSN4730-01-160-5243
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 042-021983 PIECE 2L1# · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: MATERIAL STEEL,ASTM A-217 WC6,3.750 IN. SQUARE,1.688 IN. THICK IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: QUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
TECHNICAL CHARACTERISTICS (FLIS)
GENERAL CHARACTERISTICS ITEM DESCRIPTIONMATERIAL STEEL,ASTM A-217 WC6,3.750 IN. SQUARE,1.688 IN. THICK IN
CRITICALITY CODE JUSTIFICATIONZZZY
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSQUALITY CONTROL IAW NAVSHIPS 0948-045-7010 MATERIAL IDENTIFICATION AND CONTROL INSTRUCTION FOR LEVEL 1 ITEMS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
27A19X306C3Interchangeable
interchangeable cross-reference
interchangeable
RY-162457 ITEM 11Interchangeable
interchangeable cross-reference
interchangeable
16412Interchangeable
interchangeable cross-reference
interchangeable
945225L1Interchangeable
Same NIIN cross-reference
interchangeable
945225Interchangeable
Same NIIN cross-reference
interchangeable
042-021983 PIECE 2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 042-021983 PIECE 2L1#?
042-021983 PIECE 2L1# is a 042-021983 PIECE 2L1#.
What parts can replace 042-021983 PIECE 2L1#?
There are 6 known substitutes for 042-021983 PIECE 2L1#: 27A19X306C3, RY-162457 ITEM 11, 16412 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 042-021983 PIECE 2L1#?
042-021983 PIECE 2L1# is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-160-5243. 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