PartsTable
Technical Data Sheet
PartsTable / COMPONENT / B1859
B1859 ✓ 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 CUP,GREASE is a the manufacturer industrial component. Key specifications include height: 2.062 INCHES NOMINAL IN, material: COPPER ALLOY OVERALL, head_style: FILLISTER, head_height: 0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN, thread_class: 2A A, head_diameter: 0.166 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-223-6398, 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
B1859
NSN: 4730-00-223-6398
FSC: 4730
CAGE: 64104 — DRESSER, LLC (USA)
SPECIFICATIONS
height2.062 INCHES NOMINAL IN
materialCOPPER ALLOY OVERALL
head_styleFILLISTER
head_height0.069 INCHES MINIMUM AND 0.079 INCHES MAXIMUM IN
thread_class2A A
head_diameter0.166 INCHES MINIMUM AND 0.183 INCHES MAXIMUM IN
thread_length0.200 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
screw_materialSTEEL
fastener_length0.219 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN
grease_capacity0.500 OUNCES OZ
special_featuresCAP HAS WING ON TOP FOR TURNING
style_designatorSTRAIGHT, CAP FEED, W/BALL CHECK
NSN4730-00-223-6398
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: B1859 · 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
•
GREASE CAPACITY: 0.500 OUNCES OZ
•
SCREW THREAD SERIES DESIGNATOR: NPT
•
ASSEMBLY CLEARANCE RADIUS: 0.547 INCHES NOMINAL IN
•
NOMINAL THREAD SIZE: 0.125 INCHES IN
•
HEIGHT: 2.062 INCHES NOMINAL IN
•
THREAD QUANTITY PER INCH: 27
•
MATERIAL: COPPER ALLOY OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
GREASE CAPACITY0.500 OUNCES OZ
SCREW THREAD SERIES DESIGNATORNPT
ASSEMBLY CLEARANCE RADIUS0.547 INCHES NOMINAL IN
NOMINAL THREAD SIZE0.125 INCHES IN
HEIGHT2.062 INCHES NOMINAL IN
THREAD QUANTITY PER INCH27
SPECIAL FEATURESCAP HAS WING ON TOP FOR TURNING
MATERIALCOPPER ALLOY OVERALL
STYLE DESIGNATORSTRAIGHT, CAP FEED, W/BALL CHECK
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
FFS92TYPEISTYLE4SInterchangeable
interchangeable cross-reference
interchangeable
B1859Interchangeable
interchangeable cross-reference
interchangeable
STYLE207SIZE00Interchangeable
Same NIIN cross-reference
interchangeable
IX359Interchangeable
Same NIIN cross-reference
interchangeable
208B00Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
Ready to buy B1859?
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 B1859?
B1859 is a CUP,GREASE.
What parts can replace B1859?
There are 5 known substitutes for B1859: FFS92TYPEISTYLE4S, B1859, STYLE207SIZE00 and 2 more. Substitute compatibility should be verified for your specific system.
Is B1859 still available?
B1859 is currently cancelled.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — B1859

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