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Technical Data Sheet
PartsTable / COMPONENT / 66F1
66F1 ✓ Verified by PartsTable
— · GATE VALVE
WHAT YOU NEED TO KNOW
Full open or full close only — never throttle Rising stem shows position visually
Throttling a gate valve erodes seats
PRODUCT OVERVIEW

The COCK,SHUTOFF,SCREW STEM is a the manufacturer industrial component. Key specifications include material: COPPER ALLOY OVERALL, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: STRAIGHT THRU, thread_direction: RIGHT-HAND ALL ENDS, flow_control_device: NEEDLE. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4820-00-427-0949, 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
66F1
NSN: 4820-00-427-0949
FSC: 4820
CAGE: 12603 — CLARK EQUIPMENT CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY OVERALL
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorSTRAIGHT THRU
thread_directionRIGHT-HAND ALL ENDS
flow_control_deviceNEEDLE
nominal_thread_size0.125 INCHES ALL ENDS IN
valve_operation_methodMANUAL
end_item_identificationGRUMMIN AEROSPACE A10 AIRCRAFT
thread_quantity_per_inch27 ALL ENDS
thread_series_designatorNPTF ALL ENDS
nominal_pipe_size_accommodated0.125 INCHES FIRST END IN
NSN4820-00-427-0949
COMPONENT DIAGRAM
GATE VALVE — FULL OPEN OR FULL CLOSE ONLY Rising STEM BONNET FLOW → → FLOW SEATS — — SIZE: — · — · — PN: 66F1 · OEM ⚠ VERIFY BEFORE ORDERING Gate valves = FULL OPEN or FULL CLOSE only — never throttle. Partial opening causes seat erosion and vibration. ✓ BROKER TIP Rising stem shows valve position visually — easier maintenance. Non-rising stem saves headroom. PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
THREAD SERIES DESIGNATOR: NPTF ALL ENDS
•
CONNECTION STYLE: PLAIN (PIPE) ALL ENDS
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
THREAD QUANTITY PER INCH: 27 ALL ENDS
•
VALVE OPERATION METHOD: MANUAL
•
NOMINAL THREAD SIZE: 0.125 INCHES ALL ENDS IN
•
STYLE DESIGNATOR: STRAIGHT THRU
TECHNICAL CHARACTERISTICS (FLIS)
THREAD SERIES DESIGNATORNPTF ALL ENDS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
THREAD QUANTITY PER INCH27 ALL ENDS
VALVE OPERATION METHODMANUAL
END ITEM IDENTIFICATIONGRUMMIN AEROSPACE A10 AIRCRAFT
NOMINAL THREAD SIZE0.125 INCHES ALL ENDS IN
STYLE DESIGNATORSTRAIGHT THRU
NOMINAL PIPE SIZE ACCOMMODATED0.125 INCHES FIRST END IN
MATERIALCOPPER ALLOY OVERALL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
06810Interchangeable
interchangeable cross-reference
interchangeable
6810Interchangeable
interchangeable cross-reference
interchangeable
SAE J512 4-4 040202BInterchangeable
interchangeable cross-reference
interchangeable
705BP1Interchangeable
interchangeable cross-reference
interchangeable
49W1-4X1-4INInterchangeable
interchangeable cross-reference
interchangeable
7059Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 66F1?
66F1 is a COCK,SHUTOFF,SCREW STEM.
What parts can replace 66F1?
There are 13 known substitutes for 66F1: 06810, 6810, SAE J512 4-4 040202B and 10 more. Substitute compatibility should be verified for your specific system.
Is 66F1 still available?
66F1 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