PartsTable
Technical Data Sheet
118758 ✓ 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 CHAMBER HALF,DIAPHRAGM is a the manufacturer industrial component. Key specifications include length: 0.188 INCHES NOMINAL SQUARE END IN, material: STEEL OVERALL, thread_length: 0.750 INCHES MINIMUM IN, overall_length: 2.000 INCHES NOMINAL IN, shank_diameter: 0.168 INCHES MINIMUM IN, style_designator: STRAIGHT FLUTE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-421-1467, 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
118758
NSN: 4730-00-421-1467
FSC: 4730
CAGE: 24617 — GENERAL MOTORS CORP (USA)
SPECIFICATIONS
length0.188 INCHES NOMINAL SQUARE END IN
materialSTEEL OVERALL
thread_length0.750 INCHES MINIMUM IN
flute_quantity3
overall_length2.000 INCHES NOMINAL IN
shank_diameter0.168 INCHES MINIMUM IN
style_designatorSTRAIGHT FLUTE
thread_directionRIGHT-HAND
thread_structureREGULAR
width_across_flats0.110 INCHES NOMINAL IN
starting_chamfer_typeBOTTOMING
thread_forming_methodGROUND
NSN4730-00-421-1467
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 118758 · 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
THREAD CLASS: 3A FIRST END A
CONNECTION TYPE: THREADED EXTERNAL TUBE FIRST END
SEAT ANGLE: 45.0 DEGREES SECOND END
MATERIAL: COPPER ALLOY OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 0.250 INCHES SECOND END IN
LEG LENGTH: 0.828 INCHES NOMINAL FIRST END IN
CONNECTION STYLE: FLARED (TUBE) FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
THREAD CLASS3A FIRST END A
CONNECTION TYPETHREADED EXTERNAL TUBE FIRST END
SEAT ANGLE45.0 DEGREES SECOND END
MATERIALCOPPER ALLOY OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.250 INCHES SECOND END IN
LEG LENGTH0.828 INCHES NOMINAL FIRST END IN
LEG LENGTH0.781 INCHES NOMINAL THIRD END IN
CONNECTION STYLEFLARED (TUBE) FIRST END
SEAT ANGLE45.0 DEGREES FIRST END
CONNECTION TYPETHREADED EXTERNAL TUBE SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 4
08173Interchangeable
interchangeable cross-reference
interchangeable
C54234Interchangeable
interchangeable cross-reference
interchangeable
118758Interchangeable
interchangeable cross-reference
interchangeable
1188758Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 118758?
118758 is a CHAMBER HALF,DIAPHRAGM.
What parts can replace 118758?
There are 4 known substitutes for 118758: 08173, C54234, 118758 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 118758?
118758 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-421-1467. This indicates validated use in U.S. government and defense supply chains.
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