PartsTable
Technical Data Sheet
81-1000-4 ✓ 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

CUTOFF MACHINE,ABRASIVE DISK,MET. Key specifications include material: PLASTIC OVERALL, flow_angle: 90.0 DEGREES, leg_length: 1.094 INCHES NOMINAL ALL ENDS IN, connection_type: THREADED EXTERNAL PIPE FIRST END, connection_style: PLAIN (PIPE) FIRST END, nominal_thread_size: 0.250 INCHES FIRST END 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 4730-01-197-7724, 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
81-1000-4
NSN: 4730-01-197-7724
FSC: 4730
CAGE: 30554 — DEPARTMENT OF DEFENSE PROJECT MANAGER-MOBILE ELECTRIC POWER (USA)
SPECIFICATIONS
materialPLASTIC OVERALL
flow_angle90.0 DEGREES
leg_length1.094 INCHES NOMINAL ALL ENDS IN
connection_typeTHREADED EXTERNAL PIPE FIRST END
connection_stylePLAIN (PIPE) FIRST END
nominal_thread_size0.250 INCHES FIRST END IN
thread_series_designatorNPT FIRST END
nominal_inside_diameter_hose_accommodated0.250 INCHES SECOND END IN
NSN4730-01-197-7724
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 81-1000-4 · 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 FIRST END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.250 INCHES SECOND END IN
FLOW ANGLE: 90.0 DEGREES
CONNECTION TYPE: THREADED EXTERNAL PIPE FIRST END
CONNECTION STYLE: BARBED OR BEADED (HOSE) SECOND END
MATERIAL: PLASTIC OVERALL
LEG LENGTH: 1.094 INCHES NOMINAL ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPT FIRST END
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.250 INCHES SECOND END IN
FLOW ANGLE90.0 DEGREES
CONNECTION TYPETHREADED EXTERNAL PIPE FIRST END
CONNECTION STYLEBARBED OR BEADED (HOSE) SECOND END
MATERIALPLASTIC OVERALL
CONNECTION STYLEPLAIN (PIPE) FIRST END
LEG LENGTH1.094 INCHES NOMINAL ALL ENDS IN
NOMINAL THREAD SIZE0.250 INCHES FIRST END IN
CONNECTION TYPEUNTHREADED EXTERNAL HOSE SECOND END
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
811000Interchangeable
interchangeable cross-reference
interchangeable
CINE 4 REVERSAL REDEVELOPERInterchangeable
interchangeable cross-reference
interchangeable
814285Interchangeable
interchangeable cross-reference
interchangeable
3405-0000-0000Interchangeable
interchangeable cross-reference
interchangeable
N4MEB-4Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 81-1000-4?
81-1000-4 is a CUTOFF MACHINE,ABRASIVE DISK,MET.
What parts can replace 81-1000-4?
There are 5 known substitutes for 81-1000-4: 811000, CINE 4 REVERSAL REDEVELOPER, 814285 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 81-1000-4?
81-1000-4 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-197-7724. This indicates validated use in U.S. government and defense supply chains.
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