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PartsTable / COMPONENT / N-375 PIECE 77
N-375 PIECE 77 ✓ 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 COVER,HYDRAULIC VALVE is a the manufacturer industrial component. Key specifications include material: STEEL, flange_length: 0.438 INCHES NOMINAL IN, flange_diameter: 3.500 INCHES NOMINAL IN, material_document_and_classification: MIL-S890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-185-8137, 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
N-375 PIECE 77
NSN: 4730-01-185-8137
FSC: 4730
CAGE: 35795 — LESLIE CONTROLS, INC. DBA LESLIE CONTROLS INC (USA)
SPECIFICATIONS
materialSTEEL
flange_length0.438 INCHES NOMINAL IN
flange_diameter3.500 INCHES NOMINAL IN
material_document_and_classificationMIL-S890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE
NSN4730-01-185-8137
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: N-375 PIECE 77 · 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
•
MATERIAL: STEEL
•
FLANGE LENGTH: 0.438 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-S890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE
•
FLANGE DIAMETER: 3.500 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL
FLANGE LENGTH0.438 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-S890,CLASS B MIL SPEC SINGLE MATERIAL RESPONSE
FLANGE DIAMETER3.500 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 15
N375Interchangeable
interchangeable cross-reference
interchangeable
21499Interchangeable
interchangeable cross-reference
interchangeable
N-375-67Interchangeable
interchangeable cross-reference
interchangeable
N375PC67Interchangeable
interchangeable cross-reference
interchangeable
N375PC68Interchangeable
interchangeable cross-reference
interchangeable
N375-68Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is N-375 PIECE 77?
N-375 PIECE 77 is a COVER,HYDRAULIC VALVE.
What parts can replace N-375 PIECE 77?
There are 15 known substitutes for N-375 PIECE 77: N375, 21499, N-375-67 and 12 more. Substitute compatibility should be verified for your specific system.
What is the NSN for N-375 PIECE 77?
N-375 PIECE 77 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-185-8137. This indicates validated use in U.S. government and defense supply chains.
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PartsTable Design LLC · partstable.com
Last verified: July 2026