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PartsTable / COMPONENT / GC601-8
GC601-8 ✓ 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 ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 1137 OR STEEL COMP 1141 OVERALL, body_type: SOLID, head_type: SOLID, drive_end_style: RECESSED HEXAGON, connection_style: PLAIN, thread_direction: RIGHT-HAND EXTERNAL. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-277-6352, 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
GC601-8
NSN: 4730-00-277-6352
FSC: 4730
CAGE: 03473 — ROTHENBERGER USA INC (USA)
SPECIFICATIONS
materialSTEEL COMP 1137 OR STEEL COMP 1141 OVERALL
body_typeSOLID
head_typeSOLID
drive_end_styleRECESSED HEXAGON
connection_stylePLAIN
thread_directionRIGHT-HAND EXTERNAL
surface_treatmentCADMIUM OVERALL
nominal_thread_size0.062 INCHES EXTERNAL IN
end_item_identificationCATERPILLER TRACTOR MODEL D-7E,TRUCKS 4X4 MODEL M553,M520,M559,M877
thread_series_designatorANPT EXTERNAL
material_document_and_classificationQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_pipe_size_for_which_designed0.062 INCHES IN
NSN4730-00-277-6352
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: GC601-8 · 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: CADMIUM OVERALL
•
BODY TYPE: SOLID
•
THREAD SERIES DESIGNATOR: ANPT EXTERNAL
•
THREAD DIRECTION: RIGHT-HAND EXTERNAL
•
DRIVE END STYLE: RECESSED HEXAGON
•
MATERIAL: STEEL COMP 1137 OR STEEL COMP 1141 OVERALL
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONCATERPILLER TRACTOR MODEL D-7E,TRUCKS 4X4 MODEL M553,M520,M559,M877
SURFACE TREATMENTCADMIUM OVERALL
BODY TYPESOLID
THREAD SERIES DESIGNATORANPT EXTERNAL
THREAD DIRECTIONRIGHT-HAND EXTERNAL
DRIVE END STYLERECESSED HEXAGON
MATERIALSTEEL COMP 1137 OR STEEL COMP 1141 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NOMINAL PIPE SIZE FOR WHICH DESIGNED0.062 INCHES IN
NOMINAL THREAD SIZE0.062 INCHES EXTERNAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 20
1866098Interchangeable
interchangeable cross-reference
interchangeable
38290Interchangeable
interchangeable cross-reference
interchangeable
MMP92368Interchangeable
interchangeable cross-reference
interchangeable
AR48236Interchangeable
interchangeable cross-reference
interchangeable
15961Interchangeable
interchangeable cross-reference
interchangeable
712073-1Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is GC601-8?
GC601-8 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace GC601-8?
There are 20 known substitutes for GC601-8: 1866098, 38290, MMP92368 and 17 more. Substitute compatibility should be verified for your specific system.
Is GC601-8 still available?
GC601-8 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026