PartsTable
Technical Data Sheet
BM581-1-7 ✓ 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

COVER,ELECTRONIC COMMUNICATION E. Key specifications include material: STEEL OR IRON OVERALL, head_type: SOLID, seat_type: BEVELED, flow_angle: 90.0 DEGREES, leg_length: 0.875 INCHES NOMINAL ALL ENDS IN, sweep_type: SHORT. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-255-8254, 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
BM581-1-7
NSN: 4730-00-255-8254
FSC: 4730
CAGE: 83179 — JOY MFG CO AIR POWER GROUP MICHIGAN CITY PLANT (USA)
SPECIFICATIONS
materialSTEEL OR IRON OVERALL
head_typeSOLID
seat_typeBEVELED
flow_angle90.0 DEGREES
leg_length0.875 INCHES NOMINAL ALL ENDS IN
sweep_typeSHORT
reducer_typeCONCENTRIC
inlet_locationRIGHT-HAND SIDE SINGLE INLET
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_features45 DEG BEND;2.000 IN. PIPE, 11 1/2 NPT IN
style_designatorPLAIN W/CONCAVE SIDES
NSN4730-00-255-8254
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: BM581-1-7 · 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
WWP521TYPE2Interchangeable
interchangeable cross-reference
interchangeable
ASME B16.3 CL 150 3/4X1 INCHInterchangeable
interchangeable cross-reference
interchangeable
MS39232-9Interchangeable
interchangeable cross-reference
interchangeable
WWP521Interchangeable
interchangeable cross-reference
interchangeable
7534Interchangeable
interchangeable cross-reference
interchangeable
MS39232-15Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is BM581-1-7?
BM581-1-7 is a COVER,ELECTRONIC COMMUNICATION E.
What parts can replace BM581-1-7?
There are 21 known substitutes for BM581-1-7: WWP521TYPE2, ASME B16.3 CL 150 3/4X1 INCH, MS39232-9 and 18 more. Substitute compatibility should be verified for your specific system.
Is BM581-1-7 still available?
BM581-1-7 is currently cancelled.
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