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Technical Data Sheet
PartsTable / COMPONENT / 11B4550275
11B4550275 ✓ 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 ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL BODY, leg_length: 0.410 INCHES NOMINAL ALL ENDS IN, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: RIGID, SHORT CENTER WRENCHING FACILITY, nominal_thread_size: 0.250 INCHES ALL ENDS IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-724-1403, 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
11B4550275
NSN: 4730-01-724-1403
FSC: 4730
CAGE: 5B5M3 — DEVCOM CHEMICAL BIOLOGICAL CENTER DBA CHEMICAL BIOLOGICAL CENTER DIV U.S. DEPT OF ARMY (USA)
SPECIFICATIONS
materialSTEEL BODY
leg_length0.410 INCHES NOMINAL ALL ENDS IN
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorRIGID, SHORT CENTER WRENCHING FACILITY
nominal_thread_size0.250 INCHES ALL ENDS IN
end_item_identification4910-01-627-0524
thread_quantity_per_inch18 ALL ENDS
thread_series_designatorNPT ALL ENDS
nominal_width_across_flats0.750 INCHES ALL ENDS IN
part_name_assigned_by_controlling_agencyFEMALE TO FEMALE ADAPTER
NSN4730-01-724-1403
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 11B4550275 · 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
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
NOMINAL WIDTH ACROSS FLATS: 0.750 INCHES ALL ENDS IN
•
LEG LENGTH: 0.410 INCHES NOMINAL ALL ENDS IN
•
MATERIAL: STEEL BODY
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED INTERNAL PIPE ALL ENDS
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL WIDTH ACROSS FLATS0.750 INCHES ALL ENDS IN
LEG LENGTH0.410 INCHES NOMINAL ALL ENDS IN
MATERIALSTEEL BODY
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
END ITEM IDENTIFICATION4910-01-627-0524
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
PART NAME ASSIGNED BY CONTROLLING AGENCYFEMALE TO FEMALE ADAPTER
THREAD QUANTITY PER INCH18 ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
60244-90158Interchangeable
interchangeable cross-reference
interchangeable
LT-2-757Interchangeable
interchangeable cross-reference
interchangeable
0202-4-4Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 11B4550275?
11B4550275 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace 11B4550275?
There are 3 known substitutes for 11B4550275: 60244-90158, LT-2-757, 0202-4-4. Substitute compatibility should be verified for your specific system.
What is the NSN for 11B4550275?
11B4550275 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-724-1403. 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