PartsTable / COMPONENT / 181/2
181/2
✓ 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 181/2 is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-5841, 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
181/2
NSN: 4730-00-277-5841 FSC: 4730 CAGE: 62727 — MID-STATE SALES, INC. DIV DEFENSE PRODUCTS GROUP (USA)
SPECIFICATIONS
Part Number 181/2 NSN 4730-00-277-5841
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL
END A: —
STRAIGHT
END B: —
SPECIFICATIONS
Thread: —
Material: —
Pressure: —
PN: 181/2 · 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
• MATERIAL: COPPER ALLOY OR STEEL BAND
• SURFACE TREATMENT: ZINC NUT
• INSIDE DIAMETER: 3.063 INCHES NOMINAL IN
• FASTENING DEVICE TYPE: PLAIN SLOTTED HEAD SCREW
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL COPPER ALLOY OR STEEL BAND SURFACE TREATMENT ZINC NUT OVERALL WIDTH 0.625 INCHES NOMINAL IN MATERIAL STEEL BOLT STYLE DESIGNATOR BAND INSIDE DIAMETER 3.063 INCHES NOMINAL IN MATERIAL STEEL NUT FASTENING DEVICE TYPE PLAIN SLOTTED HEAD SCREW
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
16-0012 Interchangeable 901715-22L
interchangeable
510427 Interchangeable interchangeable cross-reference
interchangeable
5096-28 Interchangeable interchangeable cross-reference
interchangeable
55123 Interchangeable interchangeable cross-reference
interchangeable
HP6004 Interchangeable interchangeable cross-reference
interchangeable
LIFECYCLE
Status CANCELLED
Availability —
RoHS Compliant EAR99 Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 181/2?
181/2 is a 181/2.
What parts can replace 181/2?
There are 13 known substitutes for 181/2: 16-0012, 510427, 5096-28 and 10 more. Substitute compatibility should be verified for your specific system.
Is 181/2 still available?
181/2 is currently cancelled.