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601657 — INSULATOR,SPACER

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

601657: INSULATOR,SPACER.

The INSULATOR,SPACER is a the manufacturer industrial component. Key specifications include material: OVERALL GLASS,EPOXY,G-10, thread_class: 2A SECOND END A, overall_width: 0.640 INCHES NOMINAL IN, overall_height: 0.700 INCHES NOMINAL IN, overall_length: 9.165 INCHES NOMINAL IN, connection_type: UNTHREADED INTERNAL TUBE FIRST END. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-970-3821, 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
601657
NSN: 4730-00-970-3821
NIINs: 009703821, 013545749, 013630439
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 62983 — EATON AEROSPACE, LLC DBA JACKSON SOUTH (USA)
SPECIFICATIONS
materialOVERALL GLASS,EPOXY,G-10
thread_class2A SECOND END A
overall_width0.640 INCHES NOMINAL IN
overall_height0.700 INCHES NOMINAL IN
overall_length9.165 INCHES NOMINAL IN
connection_typeUNTHREADED INTERNAL TUBE FIRST END
connection_stylePLAIN (TUBE) FIRST END
special_features60 HOLES 0.158 IN. DIA IN
surface_treatmentANODIZE OUTSIDE
nominal_thread_size0.938 INCHES SECOND END IN
nominal_overall_length0.453 INCHES IN
thread_series_designatorUNEF SECOND END
NSN4730-00-970-3821
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 601657 · 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
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
•
CONNECTION STYLE: EXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
•
NOMINAL OVERALL LENGTH: 0.453 INCHES IN
•
CONNECTION TYPE: UNTHREADED INTERNAL TUBE FIRST END
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-268,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE INSIDE
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TYPE 2 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) SECOND END
CONNECTION STYLEPLAIN (TUBE) FIRST END
NOMINAL OVERALL LENGTH0.453 INCHES IN
CONNECTION TYPEUNTHREADED INTERNAL TUBE FIRST END
CONNECTION TYPETHREADED EXTERNAL BOSS SECOND END
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-268,T4 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED0.756 INCHES FIRST END IN
NOMINAL THREAD SIZE0.938 INCHES SECOND END IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 601657?
601657 is a INSULATOR,SPACER.
What is the NSN for 601657?
601657 is cataloged in the U.S. Government catalog under NSN 4730-00-970-3821. This indicates validated use in U.S. government and defense supply chains.
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