PartsTable
Technical Data Sheet
12857FX ✓ 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 material: COPPER ALLOY 377 OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.280 INCHES NOMINAL FIRST END IN, seat_angle: 45.0 DEGREES FIRST END, thread_class: 2A FIRST END A, connection_type: THREADED EXTERNAL TUBE FIRST END. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-254-6229, 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
12857FX
NSN: 4730-00-254-6229
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialCOPPER ALLOY 377 OVERALL
flow_angle90.0 DEGREES
leg_length1.280 INCHES NOMINAL FIRST END IN
seat_angle45.0 DEGREES FIRST END
thread_class2A FIRST END A
connection_typeTHREADED EXTERNAL TUBE FIRST END
connection_stylePLAIN (PIPE) SECOND END
nominal_thread_size0.500 INCHES SECOND END IN
thread_series_designatorNPTF SECOND END
nondefinitive_spec/std_data2A FIGURE A
specification/standard_data81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
material_document_and_classificationQQ-B-626,COMP 21 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-254-6229
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 12857FX · 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 DOCUMENT AND CLASSIFICATION: QQ-B-626,COMP 21 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
LEG LENGTH: 1.380 INCHES NOMINAL SECOND END IN
CONNECTION STYLE: PLAIN (PIPE) SECOND END
CONNECTION TYPE: THREADED EXTERNAL PIPE SECOND END
NONDEFINITIVE SPEC/STD DATA: 2A FIGURE A
NOMINAL THREAD SIZE: 0.500 INCHES SECOND END IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,COMP 21 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
LEG LENGTH1.380 INCHES NOMINAL SECOND END IN
CONNECTION STYLEPLAIN (PIPE) SECOND END
CONNECTION STYLEFLARED (TUBE) FIRST END
CONNECTION TYPETHREADED EXTERNAL PIPE SECOND END
NONDEFINITIVE SPEC/STD DATA2A FIGURE A
NOMINAL THREAD SIZE0.500 INCHES SECOND END IN
MATERIALCOPPER ALLOY 377 OVERALL
THREAD CLASS2A FIRST END A
VERIFIED SUBSTITUTES & CROSS-REFERENCES 7
SAE-J512Interchangeable
interchangeable cross-reference
interchangeable
8-8 010101BAInterchangeable
interchangeable cross-reference
interchangeable
J512Interchangeable
interchangeable cross-reference
interchangeable
42F8Interchangeable
Same NIIN cross-reference
interchangeable
8-8 010202BInterchangeable
Same NIIN cross-reference
interchangeable
1024-8-8BInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 12857FX?
12857FX is a ADAPTER,STRAIGHT,PIPE TO TUBE.
What parts can replace 12857FX?
There are 7 known substitutes for 12857FX: SAE-J512, 8-8 010101BA, J512 and 4 more. Substitute compatibility should be verified for your specific system.
Is 12857FX still available?
12857FX is currently cancelled.
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