PartsTable
Technical Data Sheet
PartsTable / COMPONENT / MIL-F-20042
MIL-F-20042 ✓ 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

HEATING ELEMENT,ELECTRICAL,IMMER. Key specifications include material: RUBBER NATURAL OVERALL, outside_diameter: 5.0625 INCHES NOMINAL IN, bolt_circle_diameter: 0.5625 INCHES NOMINAL IN, cross-sectional_thickness: 0.125 INCHES NOMINAL IN, cross_section_outside_diameter: 5.0625 INCHES NOMINAL IN, part_name_assigned_by_controlling_agency: GASKET. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-104-1997, 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
MIL-F-20042
NSN: 4730-00-104-1997
FSC: 4730
CAGE: 81349 — MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialRUBBER NATURAL OVERALL
outside_diameter5.0625 INCHES NOMINAL IN
bolt_circle_diameter0.5625 INCHES NOMINAL IN
cross-sectional_thickness0.125 INCHES NOMINAL IN
cross_section_outside_diameter5.0625 INCHES NOMINAL IN
part_name_assigned_by_controlling_agencyGASKET
NSN4730-00-104-1997
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-20042 · 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
•
FACE SEATING SURFACE CONDITION: SERRATED
•
FLANGE SECTION STYLE: PLAIN FACE, SOCKET BRAZING NECK
•
BOLT HOLE DIAMETER: 0.562 INCHES NOMINAL IN
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 0.750 INCHES IN
•
BOLT HOLE QUANTITY: 4
•
NECK HEIGHT: 0.625 INCHES NOMINAL IN
•
MATERIAL: COPPER ALLOY
•
STYLE DESIGNATOR: ROUND, ONE BOLT HOLE CIRCLE
TECHNICAL CHARACTERISTICS (FLIS)
FACE SEATING SURFACE CONDITIONSERRATED
FLANGE SECTION STYLEPLAIN FACE, SOCKET BRAZING NECK
BOLT HOLE DIAMETER0.562 INCHES NOMINAL IN
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.750 INCHES IN
BOLT HOLE QUANTITY4
NECK HEIGHT0.625 INCHES NOMINAL IN
MATERIALCOPPER ALLOY
STYLE DESIGNATORROUND, ONE BOLT HOLE CIRCLE
OPERATING PRESSURE AND TYPE250.0 POUNDS PER SQUARE INCH (PSI) SALT WATER MAXIMUM REQUIRED LOCATION NOT OTHERWISE SPECIFIED LBS
SOCKET DIAMETER1.050 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
202176REVDITEM23Interchangeable
Same NIIN cross-reference
interchangeable
FIG5181-150Interchangeable
Same NIIN cross-reference
interchangeable
MIL-PRF-20042Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy MIL-F-20042?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is MIL-F-20042?
MIL-F-20042 is a HEATING ELEMENT,ELECTRICAL,IMMER.
What parts can replace MIL-F-20042?
There are 3 known substitutes for MIL-F-20042: 202176REVDITEM23, FIG5181-150, MIL-PRF-20042. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-F-20042?
MIL-F-20042 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-104-1997. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
Loading comments...
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Need a quote for MIL-F-20042?

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026