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1/4 DD-S — Technical Data Sheet

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— · 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 ENGRAVER-ROUTER,COMPUTERIZED is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, flow_angle: 90.0 DEGREES, leg_length: 0.969 INCHES NOMINAL ALL ENDS IN, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, surface_treatment: CADMIUM OR ZINC OVERALL. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-00-728-2021, 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
1/4 DD-S
NSN: 4730-00-728-2021
FSC: 4730
CAGE: 30780 — PARKER-HANNIFIN CORPORATION DBA PNEUTRONICS DIV TUBE FITTINGS DIVISION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
flow_angle90.0 DEGREES
leg_length0.969 INCHES NOMINAL ALL ENDS IN
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
surface_treatmentCADMIUM OR ZINC OVERALL
operating_pressure3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
nominal_thread_size0.250 INCHES ALL ENDS IN
end_item_identificationMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
media_for_which_designedWATER-OIL-GAS FIRST RESPONSE
thread_series_designatorNPT ALL ENDS
NSN4730-00-728-2021
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1/4 DD-S · 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
•
MEDIA FOR WHICH DESIGNED: HYDRAULIC FLUID SECOND RESPONSE
•
FLOW ANGLE: 90.0 DEGREES
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
MATERIAL: STEEL OVERALL
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
TECHNICAL CHARACTERISTICS
MEDIA FOR WHICH DESIGNEDHYDRAULIC FLUID SECOND RESPONSE
FLOW ANGLE90.0 DEGREES
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
MATERIALSTEEL OVERALL
END ITEM IDENTIFICATIONMULTIPLE LAUNCH ROCKET SYSTEM (MLRS)
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM SINGLE RESPONSE LBS
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
THREAD SERIES DESIGNATORNPT ALL ENDS
LEG LENGTH0.969 INCHES NOMINAL ALL ENDS IN
MEDIA FOR WHICH DESIGNEDWATER-OIL-GAS FIRST RESPONSE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
2-20244InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
13217E2216-1InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
C3509X4InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
25UJ-04InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7777*MEJI-EMZ5InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
S4EInterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 1/4 DD-S?
1/4 DD-S is a ENGRAVER-ROUTER,COMPUTERIZED.
What parts can replace 1/4 DD-S?
There are 28 known substitutes for 1/4 DD-S: 2-20244, 13217E2216-1, C3509X4 and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 1/4 DD-S?
1/4 DD-S is cataloged in the Federal Logistics Information System under NSN 4730-00-728-2021. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: September 2026