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10503 ITEM 51 ✓ 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 ORIFICE,VALVE is a the manufacturer industrial component. Key specifications include width: 108.000 INCHES NOMINAL IN, mesh_size: 0.16IN IN, cloth_weight: 11.100 OUNCES PER SQUARE YARD NOMINAL OZ, fiber_material: NYLON BASIC, special_features: 200/840 DENIER; BURSTING STRENGTH APPROXIMATELY 280 LBS LBS, end_item_identification: 1905-01-284-2647. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-175-7100, 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
10503 ITEM 51
NSN: 4730-01-175-7100
FSC: 4730
CAGE: 99447 — COOPER INTERCONNECT, INC. DBA COOPER INTERCONNECT DIV INTERCONNECT (USA)
SPECIFICATIONS
width108.000 INCHES NOMINAL IN
mesh_size0.16IN IN
cloth_weight11.100 OUNCES PER SQUARE YARD NOMINAL OZ
fiber_materialNYLON BASIC
special_features200/840 DENIER; BURSTING STRENGTH APPROXIMATELY 280 LBS LBS
end_item_identification1905-01-284-2647
part_name_assigned_by_controlling_agencyPIN, DOWEL
NSN4730-01-175-7100
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 10503 ITEM 51 · 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 10
8885Interchangeable
interchangeable cross-reference
interchangeable
7220Interchangeable
interchangeable cross-reference
interchangeable
6096978-1Interchangeable
interchangeable cross-reference
interchangeable
W8885Interchangeable
interchangeable cross-reference
interchangeable
199951-022Interchangeable
interchangeable cross-reference
interchangeable
PS60018-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 10503 ITEM 51?
10503 ITEM 51 is a ORIFICE,VALVE.
What parts can replace 10503 ITEM 51?
There are 10 known substitutes for 10503 ITEM 51: 8885, 7220, 6096978-1 and 7 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 10503 ITEM 51?
10503 ITEM 51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-175-7100. 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