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Technical Data Sheet
PartsTable / COMPONENT / 11B4521006
11B4521006 ✓ 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 UNION,PIPE is a the manufacturer industrial component. Key specifications include material: PLASTIC OVERALL, nominal_overall_length: 1.99 INCHES IN, end_item_identification: 4210-01-627-0524, nominal_outside_diameter: 0.375 INCHES FIRST END IN, part_name_assigned_by_controlling_agency: PIPE UNION RDCR PLAS 3/8 X 1/4. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-629-5682, 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
11B4521006
NSN: 4730-01-629-5682
FSC: 4730
CAGE: 5B5M3 — DEVCOM CHEMICAL BIOLOGICAL CENTER DBA CHEMICAL BIOLOGICAL CENTER DIV U.S. DEPT OF ARMY (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
nominal_overall_length1.99 INCHES IN
end_item_identification4210-01-627-0524
nominal_outside_diameter0.375 INCHES FIRST END IN
part_name_assigned_by_controlling_agencyPIPE UNION RDCR PLAS 3/8 X 1/4
NSN4730-01-629-5682
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 11B4521006 · 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 OUTSIDE DIAMETER: 0.250 INCHES SECOND END IN
•
MATERIAL: PLASTIC OVERALL
•
NOMINAL OVERALL LENGTH: 1.99 INCHES IN
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL OUTSIDE DIAMETER0.250 INCHES SECOND END IN
PART NAME ASSIGNED BY CONTROLLING AGENCYPIPE UNION RDCR PLAS 3/8 X 1/4
MATERIALPLASTIC OVERALL
END ITEM IDENTIFICATION4210-01-627-0524
NOMINAL OUTSIDE DIAMETER0.375 INCHES FIRST END IN
NOMINAL OVERALL LENGTH1.99 INCHES IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 6
51710Interchangeable
interchangeable cross-reference
interchangeable
SC-B-70419Interchangeable
interchangeable cross-reference
interchangeable
57610-1Interchangeable
interchangeable cross-reference
interchangeable
19968Interchangeable
interchangeable cross-reference
interchangeable
8123042Interchangeable
interchangeable cross-reference
interchangeable
FT1039Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11B4521006?
11B4521006 is a UNION,PIPE.
What parts can replace 11B4521006?
There are 6 known substitutes for 11B4521006: 51710, SC-B-70419, 57610-1 and 3 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 11B4521006?
11B4521006 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-629-5682. 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