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4HB853 ✓ 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 COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, special_features: DIPPED IN RUST PREVENTATIVE, style_designator: PLAIN, nominal_thread_size: 11.500 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 4730-01-541-5297, 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
4HB853
NSN: 4730-01-541-5297
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresDIPPED IN RUST PREVENTATIVE
style_designatorPLAIN
nominal_thread_size11.500 INCHES ALL ENDS IN
nominal_overall_length2.000 INCHES IN
end_item_identification3990-01-444-6174; DISTRIBUTOR, BITUM
thread_series_designatorNPS ALL ENDS
part_name_assigned_by_controlling_agencySTANDARD STEEL MERCHANT COUPLINGS
NSN4730-01-541-5297
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4HB853 · 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: NPS ALL ENDS
•
MATERIAL: STEEL OVERALL
•
NOMINAL OVERALL LENGTH: 2.000 INCHES IN
•
STYLE DESIGNATOR: PLAIN
•
NOMINAL THREAD SIZE: 11.500 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPS ALL ENDS
MATERIALSTEEL OVERALL
NOMINAL OVERALL LENGTH2.000 INCHES IN
STYLE DESIGNATORPLAIN
PART NAME ASSIGNED BY CONTROLLING AGENCYSTANDARD STEEL MERCHANT COUPLINGS
SPECIAL FEATURESDIPPED IN RUST PREVENTATIVE
NOMINAL THREAD SIZE11.500 INCHES ALL ENDS IN
END ITEM IDENTIFICATION3990-01-444-6174; DISTRIBUTOR, BITUM
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
33612Interchangeable
interchangeable cross-reference
interchangeable
33612BInterchangeable
interchangeable cross-reference
interchangeable
1119832Interchangeable
interchangeable cross-reference
interchangeable
73130580Interchangeable
interchangeable cross-reference
interchangeable
8737877Interchangeable
interchangeable cross-reference
interchangeable
GGG-T-70 TY1SECSTAInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 4HB853?
4HB853 is a COUPLING,PIPE.
What parts can replace 4HB853?
There are 9 known substitutes for 4HB853: 33612, 33612B, 1119832 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 4HB853?
4HB853 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-541-5297. 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