PartsTable
Technical Data Sheet
4253-138-34 ✓ 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 BAR,T,TELETYPEWRITER is a the manufacturer industrial component. Key specifications include material: IRON CAST UNS F11401 OR STEEL, style_designator: OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL), external_thread_size: 1-1/2-11-1/2, internal_thread_size: 1-1/4-11-1/2, external_thread_direction: RIGHT-HAND, internal_thread_direction: RIGHT-HAND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-193-0890, 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
4253-138-34
NSN: 4730-00-193-0890
FSC: 4730
CAGE: 83395 — CONSOLIDATED WELDING AND ENGINEERING CO (USA)
SPECIFICATIONS
materialIRON CAST UNS F11401 OR STEEL
style_designatorOUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
external_thread_size1-1/2-11-1/2
internal_thread_size1-1/4-11-1/2
external_thread_directionRIGHT-HAND
internal_thread_directionRIGHT-HAND
nondefinitive_spec/std_data2 TYPE AND A STYLE
working_pressure_and_service_type150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
material_document_and_classificationQQ-I-652, CLASS 20 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE
external_screw_thread_series_designatorNPT
internal_screw_thread_series_designatorNPT
NSN4730-00-193-0890
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4253-138-34 · 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
EXTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
EXTERNAL THREAD DIRECTION: RIGHT-HAND
MATERIAL: IRON CAST UNS F11401 OR STEEL
INTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
INTERNAL THREAD DIRECTION: RIGHT-HAND
NONDEFINITIVE SPEC/STD DATA: 2 TYPE AND A STYLE
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-I-652, CLASS 20 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE
STYLE DESIGNATOR: OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
TECHNICAL CHARACTERISTICS (FLIS)
EXTERNAL SCREW THREAD SERIES DESIGNATORNPT
EXTERNAL THREAD DIRECTIONRIGHT-HAND
MATERIALIRON CAST UNS F11401 OR STEEL
INTERNAL SCREW THREAD SERIES DESIGNATORNPT
INTERNAL THREAD DIRECTIONRIGHT-HAND
NONDEFINITIVE SPEC/STD DATA2 TYPE AND A STYLE
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-I-652, CLASS 20 FED SPEC 1ST MATERIAL RESPONSE OR ASTM A216 ASSN STD 2ND MATERIAL RESPONSE
STYLE DESIGNATOROUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
INTERNAL THREAD SIZE1-1/4-11-1/2
WORKING PRESSURE AND SERVICE TYPE150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL GAS AND 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL OIL AND 150.0 POUNDS PER SQUARE INCH (PSI) NOMINAL WATER LBS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 14
7427Interchangeable
interchangeable cross-reference
interchangeable
313022-002Interchangeable
interchangeable cross-reference
interchangeable
GA800BN4Interchangeable
interchangeable cross-reference
interchangeable
4712-1Interchangeable
interchangeable cross-reference
interchangeable
AE5561-3Interchangeable
interchangeable cross-reference
interchangeable
218-27589-3Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4253-138-34?
4253-138-34 is a BAR,T,TELETYPEWRITER.
What parts can replace 4253-138-34?
There are 14 known substitutes for 4253-138-34: 7427, 313022-002, GA800BN4 and 11 more. Substitute compatibility should be verified for your specific system.
Is 4253-138-34 still available?
4253-138-34 is currently cancelled.
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