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PartsTable / COMPONENT / E3373 PIECE 71A
E3373 PIECE 71A ✓ 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 FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL, thickness: 0.375 INCHES NOMINAL IN, neck_height: 0.188 INCHES NOMINAL IN, flange_diameter: 3.500 INCHES NOMINAL IN, furnished_items: BOLT, style_designator: ROUND, ONE BOLT HOLE CIRCLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-235-4077, 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
E3373 PIECE 71A
NSN: 4730-00-235-4077
FSC: 4730
CAGE: 07524 — DOVER PUMPS & PROCESS SOLUTIONS SEGMENT INC DBA BLACKMER DIV BLACKMER (USA)
SPECIFICATIONS
materialSTEEL
thickness0.375 INCHES NOMINAL IN
neck_height0.188 INCHES NOMINAL IN
flange_diameter3.500 INCHES NOMINAL IN
furnished_itemsBOLT
style_designatorROUND, ONE BOLT HOLE CIRCLE
features_providedCOUNTERBORED BOLT HOLES
surface_treatmentPAINT
bolt_hole_diameter0.625 INCHES NOMINAL IN
bolt_hole_quantity4
raised_face_height0.062 INCHES NOMINAL IN
bolt_circle_diameter7.000 INCHES NOMINAL IN
NSN4730-00-235-4077
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: E3373 PIECE 71A · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 21
MIL-F-18180/3-01A01Interchangeable
interchangeable cross-reference
interchangeable
B16-5-1953TABLE21Interchangeable
interchangeable cross-reference
interchangeable
22010Interchangeable
interchangeable cross-reference
interchangeable
554Interchangeable
interchangeable cross-reference
interchangeable
50 12INInterchangeable
interchangeable cross-reference
interchangeable
50Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is E3373 PIECE 71A?
E3373 PIECE 71A is a FLANGE,PIPE.
What parts can replace E3373 PIECE 71A?
There are 21 known substitutes for E3373 PIECE 71A: MIL-F-18180/3-01A01, B16-5-1953TABLE21, 22010 and 18 more. Substitute compatibility should be verified for your specific system.
Is E3373 PIECE 71A still available?
E3373 PIECE 71A 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