PartsTable
Technical Data Sheet
170-28955 ITEM 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

ADAPTER,STRAIGHT,FLANGE TO TUBE. Key specifications include material: COPPER ALLOY OVERALLUNABLE TO DECODE, flange_shape: RECTANGULAR WITH HOLES SECOND END, thread_class: 2A FIRST END A, nominal_width: 2.500 INCHES SECOND END IN, nominal_length: 2.500 INCHES SECOND END IN, connection_type: FLANGE SECOND END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-153-1421, 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
170-28955 ITEM 7
NSN: 4730-01-153-1421
FSC: 4730
CAGE: 07270 — MOOG INC. DBA AMPAC-ISP CORP (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALLUNABLE TO DECODE
flange_shapeRECTANGULAR WITH HOLES SECOND END
thread_class2A FIRST END A
nominal_width2.500 INCHES SECOND END IN
nominal_length2.500 INCHES SECOND END IN
connection_typeFLANGE SECOND END
connection_stylePLAIN (TUBE) FIRST END
nominal_thickness0.882 INCHES SECOND END IN
bolt_hole_quantity4 SECOND END
flange_face_designRAISED STRAIGHT SECOND END
nominal_thread_size2.250 INCHES FIRST END IN
nominal_overall_length2.884 INCHES IN
NSN4730-01-153-1421
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 170-28955 ITEM 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
KEY FEATURES
MATERIAL: COPPER ALLOY OVERALLUNABLE TO DECODE
FLANGE FACE DESIGN: RAISED STRAIGHT SECOND END
THREAD SERIES DESIGNATOR: UN FIRST END
MATERIAL DOCUMENT AND CLASSIFICATION: MIL-B-24059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH: 2.884 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.750 INCHES SECOND END IN
NOMINAL THREAD SIZE: 2.250 INCHES FIRST END IN
CONNECTION STYLE: PLAIN (TUBE) FIRST END
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY OVERALLUNABLE TO DECODE
FLANGE FACE DESIGNRAISED STRAIGHT SECOND END
THREAD SERIES DESIGNATORUN FIRST END
MATERIAL DOCUMENT AND CLASSIFICATIONMIL-B-24059 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OVERALL LENGTH2.884 INCHES IN
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.750 INCHES SECOND END IN
NOMINAL THREAD SIZE2.250 INCHES FIRST END IN
CONNECTION STYLEPLAIN (TUBE) FIRST END
FLANGE SHAPERECTANGULAR WITH HOLES SECOND END
BOLT HOLE NOMINAL DIAMETER0.376 INCHES SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
28962C5Interchangeable
interchangeable cross-reference
interchangeable
28962Interchangeable
interchangeable cross-reference
interchangeable
170-28955Interchangeable
interchangeable cross-reference
interchangeable
170-28955TRInterchangeable
interchangeable cross-reference
interchangeable
170-CTRInterchangeable
interchangeable cross-reference
interchangeable
28954Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 170-28955 ITEM 7?
170-28955 ITEM 7 is a ADAPTER,STRAIGHT,FLANGE TO TUBE.
What parts can replace 170-28955 ITEM 7?
There are 13 known substitutes for 170-28955 ITEM 7: 28962C5, 28962, 170-28955 and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 170-28955 ITEM 7?
170-28955 ITEM 7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-153-1421. This indicates validated use in U.S. government and defense supply chains.
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