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2AP253 ✓ 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 TUBE is a the manufacturer industrial component. Key specifications include width: 28.000 INCHES NOMINAL IN, length: 40.000 INCHES NOMINAL IN, material: PLASTIC CASE, duty_type: CONTINUOUS, nut_style: TUBE COUPLING, base_color: WHITE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-011-3177, 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
2AP253
NSN: 4730-00-011-3177
FSC: 4730
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
width28.000 INCHES NOMINAL IN
length40.000 INCHES NOMINAL IN
materialPLASTIC CASE
duty_typeCONTINUOUS
nut_styleTUBE COUPLING
base_colorWHITE
head_styleHEXAGON
nut_height0.906 INCHES NOMINAL IN
usage_formSHEET
head_height0.188 INCHES NOMINAL IN
storage_typeGENERAL PURPOSE WAREHOUSE
thread_class2A SINGLE MOUNTING FACILITY A
NSN4730-00-011-3177
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2AP253 · 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 32
43812Interchangeable
interchangeable cross-reference
interchangeable
37892Interchangeable
interchangeable cross-reference
interchangeable
99133Interchangeable
interchangeable cross-reference
interchangeable
830413Interchangeable
interchangeable cross-reference
interchangeable
5253-635Interchangeable
interchangeable cross-reference
interchangeable
276Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2AP253?
2AP253 is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 2AP253?
There are 32 known substitutes for 2AP253: 43812, 37892, 99133 and 29 more. Substitute compatibility should be verified for your specific system.
Is 2AP253 still available?
2AP253 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