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Technical Data Sheet
PartsTable / COMPONENT / 1/4SQHDPP
1/4SQHDPP ✓ 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 1/4SQHDPP is a the manufacturer industrial component. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-221-2137, 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
1/4SQHDPP
NSN: 4730-00-221-2137
FSC: 4730
CAGE: 85880 — MORSE INDUSTRIAL CORP DENVER GEARING DIV SUB OF EMERSON ELECTRIC CO (USA)
SPECIFICATIONS
Part Number1/4SQHDPP
NSN4730-00-221-2137
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1/4SQHDPP · 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
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.250 INCHES IN
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
HEAD TYPE: SOLID
•
DRIVE END STYLE: RAISED SQUARE
•
NOMINAL THREAD SIZE: 0.250 INCHES EXTERNAL IN
•
OPERATING PRESSURE: 3000.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.250 INCHES IN
THREAD DIRECTIONRIGHT-HAND EXTERNAL
HEAD TYPESOLID
DRIVE END STYLERAISED SQUARE
NOMINAL THREAD SIZE0.250 INCHES EXTERNAL IN
OPERATING PRESSURE3000.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
MATERIALSTEEL OVERALL
SPECIAL FEATURESGRUMMAN AEROSPACE A-10 AIRCRAFT
CONNECTION STYLEPLAIN
BODY TYPECORED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
11383Interchangeable
interchangeable cross-reference
interchangeable
GGG-D-751 TYCSZ56Interchangeable
interchangeable cross-reference
interchangeable
B94.11MInterchangeable
interchangeable cross-reference
interchangeable
225-12Interchangeable
interchangeable cross-reference
interchangeable
A21458-95Interchangeable
interchangeable cross-reference
interchangeable
18052Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/4SQHDPP?
1/4SQHDPP is a 1/4SQHDPP.
What parts can replace 1/4SQHDPP?
There are 23 known substitutes for 1/4SQHDPP: 11383, GGG-D-751 TYCSZ56, B94.11M and 20 more. Substitute compatibility should be verified for your specific system.
Is 1/4SQHDPP still available?
1/4SQHDPP 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