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78SIZE1 ✓ 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 CUP,OIL,LUBRICATING is a the manufacturer industrial component. Key specifications include height: 0.422 INCHES NOMINAL IN, material: STEEL OVERALL, shank_length: 0.219 INCHES NOMINAL IN, shank_diameter: 0.312 INCHES NOMINAL IN, style_designator: STRAIGHT, HINGED CAP, W/SHOULDER, surface_treatment: NICKEL OVERALL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-278-5760, 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
78SIZE1
NSN: 4730-00-278-5760
FSC: 4730
CAGE: 90655 — BOWEN PRODUCTS CORP (USA)
SPECIFICATIONS
height0.422 INCHES NOMINAL IN
materialSTEEL OVERALL
shank_length0.219 INCHES NOMINAL IN
shank_diameter0.312 INCHES NOMINAL IN
style_designatorSTRAIGHT, HINGED CAP, W/SHOULDER
surface_treatmentNICKEL OVERALL
NSN4730-00-278-5760
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 78SIZE1 · 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
•
SURFACE TREATMENT: NICKEL OVERALL
•
HEIGHT: 0.422 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
STYLE DESIGNATOR: STRAIGHT, HINGED CAP, W/SHOULDER
•
SHANK DIAMETER: 0.312 INCHES NOMINAL IN
•
SHANK LENGTH: 0.219 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
SURFACE TREATMENTNICKEL OVERALL
HEIGHT0.422 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
STYLE DESIGNATORSTRAIGHT, HINGED CAP, W/SHOULDER
SHANK DIAMETER0.312 INCHES NOMINAL IN
SHANK LENGTH0.219 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 17
CGC-W-MInterchangeable
interchangeable cross-reference
interchangeable
SC-1Interchangeable
interchangeable cross-reference
interchangeable
A-A-51152Interchangeable
interchangeable cross-reference
interchangeable
10-5199Interchangeable
interchangeable cross-reference
interchangeable
114998Interchangeable
interchangeable cross-reference
interchangeable
00502-0133-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 78SIZE1?
78SIZE1 is a CUP,OIL,LUBRICATING.
What parts can replace 78SIZE1?
There are 17 known substitutes for 78SIZE1: CGC-W-M, SC-1, A-A-51152 and 14 more. Substitute compatibility should be verified for your specific system.
Is 78SIZE1 still available?
78SIZE1 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