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680R3 — Technical Data Sheet

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— · 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 COUPLING,PIPE is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY 954 OVERALL, connection_type: THREADED INTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, special_features: RD MTG FLANGE 1-3/4 IN. OD,3 MTG HOLES 7/32 IN.

DIA EQUALLY SPACED ON 1-1/4 IN. DIA CIRCLE IN, style_designator: PLAIN, surface_treatment: ENAMEL OUTSIDE. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System under NSN 4730-00-523-2273, 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
680R3
NSN: 4730-00-523-2273
FSC: 4730
CAGE: 56442 — DIAMOND REO TRUCK CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY 954 OVERALL
connection_typeTHREADED INTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
special_featuresRD MTG FLANGE 1-3/4 IN. OD,3 MTG HOLES 7/32 IN. DIA EQUALLY SPACED ON 1-1/4 IN. DIA CIRCLE IN
style_designatorPLAIN
surface_treatmentENAMEL OUTSIDE
nominal_thread_size0.125 INCHES ALL ENDS IN
nominal_overall_length2.438 INCHES IN
end_item_identificationRLM TRUCK, VAN, SHOP, 2 1/2 TON, 6X6 (M109A3)
thread_series_designatorNPT ALL ENDS
nominal_pipe_size_accommodated0.125 INCHES ALL ENDS IN
material_document_and_classificationQQ-B-671 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN4730-00-523-2273
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 680R3 · 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
•
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
•
THREAD SERIES DESIGNATOR: NPT ALL ENDS
•
NOMINAL PIPE SIZE ACCOMMODATED: 0.125 INCHES ALL ENDS IN
•
NOMINAL OVERALL LENGTH: 2.438 INCHES IN
•
STYLE DESIGNATOR: PLAIN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-B-671 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
END ITEM IDENTIFICATIONRLM TRUCK, VAN, SHOP, 2 1/2 TON, 6X6 (M109A3)
THREAD SERIES DESIGNATORNPT ALL ENDS
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES ALL ENDS IN
SPECIAL FEATURESRD MTG FLANGE 1-3/4 IN. OD,3 MTG HOLES 7/32 IN. DIA EQUALLY SPACED ON 1-1/4 IN. DIA CIRCLE IN
NOMINAL OVERALL LENGTH2.438 INCHES IN
STYLE DESIGNATORPLAIN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-B-671 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
CONNECTION TYPETHREADED INTERNAL PIPE ALL ENDS
MATERIALCOPPER ALLOY 954 OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
Y2566200-2InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
7102706P001InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
AA332-06InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
67053InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
68065 PIECE 7InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
84867 PIECE 10InterchangeableGOVERNMENT REGISTRY
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVEGOVERNMENT REGISTRY
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 680R3?
680R3 is a COUPLING,PIPE.
What parts can replace 680R3?
There are 9 known substitutes for 680R3: Y2566200-2, 7102706P001, AA332-06 and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 680R3?
680R3 is cataloged in the Federal Logistics Information System under NSN 4730-00-523-2273. This indicates validated use in U.S. government and defense supply chains.
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Last verified: September 2026