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Technical Data Sheet
PartsTable / COMPONENT / 18271
18271 ✓ 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,PIPE TO HOSE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, head_style: HEXAGON, grip_length: 3.125 INCHES NOMINAL IN, head_height: 0.348 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN, grip_diameter: 0.555 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN, thread_length: 4.500 INCHES NOMINAL IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-6845, 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
18271
NSN: 4730-00-277-6845
FSC: 4730
CAGE: 96046 — CRANE PUMPS & SYSTEMS PFT CORP DIV CRANE PUMPS & SYSTEM PFT CORP. (USA)
SPECIFICATIONS
materialSTEEL OVERALL
head_styleHEXAGON
grip_length3.125 INCHES NOMINAL IN
head_height0.348 INCHES MINIMUM AND 0.371 INCHES MAXIMUM IN
grip_diameter0.555 INCHES MINIMUM AND 0.563 INCHES MAXIMUM IN
thread_length4.500 INCHES NOMINAL IN
fastener_length4.400 INCHES MINIMUM AND 4.500 INCHES MAXIMUM IN
special_featuresGRADE 8 PLAIN FINISH HEX CAP SCREW
thread_directionRIGHT-HAND
width_between_flats0.798 INCHES MINIMUM AND 0.812 INCHES MAXIMUM IN
end_item_identificationJERRV 4X4 EOD, 2355-01-532-2174
thread_quantity_per_inch18
NSN4730-00-277-6845
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 18271 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
851-C12Interchangeable
interchangeable cross-reference
interchangeable
18271Interchangeable
interchangeable cross-reference
interchangeable
3163344Interchangeable
interchangeable cross-reference
interchangeable
LL703PC5Interchangeable
interchangeable cross-reference
interchangeable
10-8242Interchangeable
interchangeable cross-reference
interchangeable
13-0A49Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 18271?
18271 is a ADAPTER,STRAIGHT,PIPE TO HOSE.
What parts can replace 18271?
There are 12 known substitutes for 18271: 851-C12, 18271, 3163344 and 9 more. Substitute compatibility should be verified for your specific system.
Is 18271 still available?
18271 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