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PartsTable / COMPONENT / 45-4250-900-040
45-4250-900-040 ✓ 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 WORK STATION,CLEAN AIR,LAMINAR is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY SLEEVE, leg_length: 0.375 INCHES MINIMUM SECOND END IN, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL TUBE ALL ENDS, connection_style: COMPRESSION (TUBE) ALL ENDS, special_features: WEAPON SYSTEM ESSENTIAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-289-0782, 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
45-4250-900-040
NSN: 4730-00-289-0782
FSC: 4730
CAGE: 81336 — CHIEF OF ENGINEERS DEPT OF ARMY (USA)
SPECIFICATIONS
materialCOPPER ALLOY SLEEVE
leg_length0.375 INCHES MINIMUM SECOND END IN
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL TUBE ALL ENDS
connection_styleCOMPRESSION (TUBE) ALL ENDS
special_featuresWEAPON SYSTEM ESSENTIAL
style_designatorPLAIN AND COMPRESSION W/ CENTER WRENCHING FACILITY
nominal_thread_size0.562 INCHES ALL ENDS IN
seat_nominal_radius0.062 INCHES ALL ENDS IN
nominal_overall_length0.969 INCHES IN
end_item_identificationF/A-18 HORNET AIRCRAFT
thread_series_designatorUNEF ALL ENDS
NSN4730-00-289-0782
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 45-4250-900-040 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-626,COMP 21 FED SPEC 1ST MATERIAL RESPONSE ELBOW
•
MATERIAL: COPPER ALLOY 377 OR COPPER ALLOY ELBOW
•
FURNISHED ITEMS AND QUANTITY: 2 SHORT COUPLING NUT WITH SLEEVE
•
LEG LENGTH: 0.375 INCHES MINIMUM SECOND END IN
•
STYLE DESIGNATOR: PLAIN AND COMPRESSION W/ CENTER WRENCHING FACILITY
•
SEAT NOMINAL RADIUS: 0.062 INCHES ALL ENDS IN
•
SPECIFICATION/STANDARD DATA: 81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-626,COMP 21 FED SPEC 1ST MATERIAL RESPONSE ELBOW
MATERIALCOPPER ALLOY 377 OR COPPER ALLOY ELBOW
FURNISHED ITEMS AND QUANTITY2 SHORT COUPLING NUT WITH SLEEVE
LEG LENGTH0.375 INCHES MINIMUM SECOND END IN
STYLE DESIGNATORPLAIN AND COMPRESSION W/ CENTER WRENCHING FACILITY
SEAT NOMINAL RADIUS0.062 INCHES ALL ENDS IN
SPECIFICATION/STANDARD DATA81343-J512 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
END ITEM IDENTIFICATIONF/A-18 HORNET AIRCRAFT
NONDEFINITIVE SPEC/STD DATA12B FIGURE
SPECIAL FEATURESWEAPON SYSTEM ESSENTIAL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 22
62FInterchangeable
interchangeable cross-reference
interchangeable
140298-901Interchangeable
interchangeable cross-reference
interchangeable
140298Interchangeable
interchangeable cross-reference
interchangeable
7913198-2Interchangeable
interchangeable cross-reference
interchangeable
B7842-2Interchangeable
interchangeable cross-reference
interchangeable
EL-1200Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 45-4250-900-040?
45-4250-900-040 is a WORK STATION,CLEAN AIR,LAMINAR.
What parts can replace 45-4250-900-040?
There are 22 known substitutes for 45-4250-900-040: 62F, 140298-901, 140298 and 19 more. Substitute compatibility should be verified for your specific system.
Is 45-4250-900-040 still available?
45-4250-900-040 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