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4B0537 — CUP,OIL,LUBRICATING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4B0537: CUP,OIL,LUBRICATING.

The CUP,OIL,LUBRICATING is a the manufacturer industrial component. Key specifications include height: 0.375 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, shank_length: 0.219 INCHES NOMINAL IN, shank_diameter: 0.190 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN, style_designator: STRAIGHT, HINGED CAP, W/SHOULDER, surface_treatment: NICKEL OVERALL. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-174-4518, 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
4B0537
NSN: 4730-00-174-4518
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 11083 — CATERPILLAR INC DIV CATERPILLAR DEFENSE (USA)
SPECIFICATIONS
height0.375 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
shank_length0.219 INCHES NOMINAL IN
shank_diameter0.190 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
style_designatorSTRAIGHT, HINGED CAP, W/SHOULDER
surface_treatmentNICKEL OVERALL
assembly_clearance_radius0.344 INCHES NOMINAL IN
NSN4730-00-174-4518
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4B0537 · 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
•
SHANK DIAMETER: 0.190 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
•
ASSEMBLY CLEARANCE RADIUS: 0.344 INCHES NOMINAL IN
•
SHANK LENGTH: 0.219 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT, HINGED CAP, W/SHOULDER
•
HEIGHT: 0.375 INCHES NOMINAL IN
•
SURFACE TREATMENT: NICKEL OVERALL
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
SHANK DIAMETER0.190 INCHES MINIMUM AND 0.192 INCHES MAXIMUM IN
ASSEMBLY CLEARANCE RADIUS0.344 INCHES NOMINAL IN
SHANK LENGTH0.219 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT, HINGED CAP, W/SHOULDER
HEIGHT0.375 INCHES NOMINAL IN
SURFACE TREATMENTNICKEL OVERALL
MATERIALCOPPER ALLOY OVERALL
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 3
301Reference document
Same NSN cross-reference
Reference document — Secondary reference
P6182Reference document
Same NSN cross-reference
Reference document — Secondary reference
1204Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4B0537?
4B0537 is a CUP,OIL,LUBRICATING.
What parts can replace 4B0537?
There are 3 known substitutes for 4B0537: 301, P6182, 1204. Substitute compatibility should be verified for your specific system.
What is the NSN for 4B0537?
4B0537 is cataloged in the U.S. Government catalog under NSN 4730-00-174-4518. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.