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DR4-6 ✓ Verified by PartsTable
Duracell · 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

Power a range of heavy-duty applications with the Duracell sealed lead acid battery range. Wide compatibility, maintenance free, valve regulation for spill-proof use and a comprehensive 1-year warranty across all SLAs. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-297-0032, 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
DR4-6
NSN: 4730-00-297-0032
FSC: 4730
CAGE: 06185 — DEL MFG CO (USA)
SPECIFICATIONS
length1.250 INCHES NOMINAL IN
materialSTEEL COMP 303
design_typeTUBULAR, HEX SHAPE
thread_class3A LOCATION NOT OTHERWISE SPECIFIED A
thread_length0.475 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
thread_seriesUNF LOCATION NOT OTHERWISE SPECIFIED
orifice_diameter0.168 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
outside_diameter0.688 INCHES NOMINAL IN
special_featuresRESTRICTOR IDENTICAL TO AN815-4C EXCEPT SINTERED MONEL POWDER FUSED INTEGRALLY WITH WALLS OF PLUG
thread_directionRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
thread_provisionTHREADED LOCATION NOT OTHERWISE SPECIFIED
thread_size_designator7/16-20 LOCATION NOT OTHERWISE SPECIFIED
NSN4730-00-297-0032
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: DR4-6 · Duracell ⚠ 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
•
THREAD DIRECTION: RIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
•
THREAD LENGTH: 0.475 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
•
THREAD CLASS: 3A LOCATION NOT OTHERWISE SPECIFIED A
•
OUTSIDE DIAMETER: 0.688 INCHES NOMINAL IN
•
ORIFICE DIAMETER: 0.168 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
•
LENGTH: 1.250 INCHES NOMINAL IN
•
THREAD SIZE DESIGNATOR: 7/16-20 LOCATION NOT OTHERWISE SPECIFIED
•
THREAD PROVISION: THREADED LOCATION NOT OTHERWISE SPECIFIED
TECHNICAL CHARACTERISTICS (FLIS)
THREAD DIRECTIONRIGHT-HAND LOCATION NOT OTHERWISE SPECIFIED
THREAD LENGTH0.475 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN
THREAD CLASS3A LOCATION NOT OTHERWISE SPECIFIED A
OUTSIDE DIAMETER0.688 INCHES NOMINAL IN
ORIFICE DIAMETER0.168 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN
LENGTH1.250 INCHES NOMINAL IN
THREAD SIZE DESIGNATOR7/16-20 LOCATION NOT OTHERWISE SPECIFIED
THREAD PROVISIONTHREADED LOCATION NOT OTHERWISE SPECIFIED
DESIGN TYPETUBULAR, HEX SHAPE
THREAD SERIESUNF LOCATION NOT OTHERWISE SPECIFIED
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
MIL-R-3241 TYPE DR-4Interchangeable
interchangeable cross-reference
interchangeable
DR4Interchangeable
interchangeable cross-reference
interchangeable
SCD799Interchangeable
interchangeable cross-reference
interchangeable
FD104Interchangeable
interchangeable cross-reference
interchangeable
FA300Interchangeable
interchangeable cross-reference
interchangeable
13S41Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is DR4-6?
DR4-6 is a RESTRICTOR,FLUID FLOW manufactured by Duracell.
What parts can replace DR4-6?
There are 12 known substitutes for DR4-6: MIL-R-3241 TYPE DR-4, DR4, SCD799 and 9 more. Substitute compatibility should be verified for your specific system.
What is the NSN for DR4-6?
DR4-6 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-297-0032. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026