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Q2421 — CUP,OIL,LUBRICATING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

Q2421: CUP,OIL,LUBRICATING.

The CUP,OIL,LUBRICATING is a the manufacturer industrial component. Key specifications include height: 1.812 INCHES NOMINAL IN, material: STEEL OR COPPER ALLOY OVERALL, style_designator: STRAIGHT, SPRING CAP, nominal_thread_size: 0.125 INCHES IN, thread_quantity_per_inch: 27, assembly_clearance_radius: 0.312 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-174-6835, 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
Q2421
NSN: 4730-00-174-6835
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 24981 — APACHE CORP GITS BROS MFG CO (USA)
SPECIFICATIONS
height1.812 INCHES NOMINAL IN
materialSTEEL OR COPPER ALLOY OVERALL
style_designatorSTRAIGHT, SPRING CAP
nominal_thread_size0.125 INCHES IN
thread_quantity_per_inch27
assembly_clearance_radius0.312 INCHES NOMINAL IN
nondefinitive_spec/std_dataB TYPE
screw_thread_series_designatorNPT
NSN4730-00-174-6835
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: Q2421 · 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
•
ASSEMBLY CLEARANCE RADIUS: 0.312 INCHES NOMINAL IN
•
STYLE DESIGNATOR: STRAIGHT, SPRING CAP
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
NONDEFINITIVE SPEC/STD DATA: B TYPE
•
HEIGHT: 1.812 INCHES NOMINAL IN
•
SCREW THREAD SERIES DESIGNATOR: NPT
•
THREAD QUANTITY PER INCH: 27
•
MATERIAL: STEEL OR COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS
ASSEMBLY CLEARANCE RADIUS0.312 INCHES NOMINAL IN
STYLE DESIGNATORSTRAIGHT, SPRING CAP
NOMINAL THREAD SIZE0.125 INCHES IN
NONDEFINITIVE SPEC/STD DATAB TYPE
HEIGHT1.812 INCHES NOMINAL IN
SCREW THREAD SERIES DESIGNATORNPT
THREAD QUANTITY PER INCH27
MATERIALSTEEL OR COPPER ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 4
X-2054Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
MILC1258Reference document
Same NSN cross-reference
Reference document — Secondary reference
75817Reference document
Same NSN cross-reference
Reference document — Secondary reference
D75817Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is Q2421?
Q2421 is a CUP,OIL,LUBRICATING.
What parts can replace Q2421?
There are 4 known substitutes for Q2421: X-2054, MILC1258, 75817 and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for Q2421?
Q2421 is cataloged in the U.S. Government catalog under NSN 4730-00-174-6835. 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.