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MC1544 ✓ 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 ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: STERI-STRIP BENZOIN TINCTURE COMPOUND, 40S. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-595-0574, 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
MC1544
NSN: 4730-00-595-0574
FSC: 4730
CAGE: 76050 — EATON AEROSPACE LLC DBA STERER ENGINEERING DIV M.C.AEROSPACE (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencySTERI-STRIP BENZOIN TINCTURE COMPOUND, 40S
NSN4730-00-595-0574
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MC1544 · 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
•
THREAD SERIES DESIGNATOR: UNF FIRST END
•
THREAD CLASS: 3A SECOND END A
•
MATERIAL: ALUMINUM ALLOY OVERALL
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 1.050 INCHES IN
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES FIRST END IN
•
NOMINAL THREAD SIZE: 0.438 INCHES FIRST END IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORUNF FIRST END
THREAD CLASS3A SECOND END A
MATERIALALUMINUM ALLOY OVERALL
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
NOMINAL OVERALL LENGTH1.050 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES FIRST END IN
THREAD SERIES DESIGNATORUNF SECOND END
NOMINAL THREAD SIZE0.438 INCHES FIRST END IN
SURFACE TREATMENTANODIZE INSIDE
CONNECTION STYLEFLARED (TUBE) FIRST END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
6510NCM162621Interchangeable
interchangeable cross-reference
interchangeable
C1544Interchangeable
interchangeable cross-reference
interchangeable
92564Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MC1544?
MC1544 is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MC1544?
There are 3 known substitutes for MC1544: 6510NCM162621, C1544, 92564. Substitute compatibility should be verified for your specific system.
Is MC1544 still available?
MC1544 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026