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43866 — GEAR,HELICAL

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

43866: GEAR,HELICAL.

The GEAR,HELICAL is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, overall_length: 4.750 INCHES NOMINAL IN, style_designator: SHALLOW ANGULAR OFFSET DOUBLE HEAD, surface_treatment: CHROMIUM OVERALL, wrenching_surface_size: 0.375 INCHES NOMINAL FIRST END IN, wrenching_surface_shape: 12 POINT BOTH ENDS INTERNAL. This part is cataloged in the U.S.

Government catalog under NSN 5340-00-071-9233, 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
43866
NSN: 5340-00-071-9233
NIINs: 000719233, 007027560, 013989147
FSC: 5340 — Hardware, Commercial
CAGE: 00624 — EATON AEROQUIP LLC DBA JACKSON NORTH 1 DIV FLUID AND ELECTRICAL DISTRIBUTION (USA)
SPECIFICATIONS
materialSTEEL OVERALL
overall_length4.750 INCHES NOMINAL IN
style_designatorSHALLOW ANGULAR OFFSET DOUBLE HEAD
surface_treatmentCHROMIUM OVERALL
wrenching_surface_size0.375 INCHES NOMINAL FIRST END IN
wrenching_surface_shape12 POINT BOTH ENDS INTERNAL
wrenching_end_offset_angle15.0 DEGREES NOMINAL
nondefinitive_spec/std_data2 TYPE AND 1 CLASS AND A STYLE
specification/standard_data0U583-SAE AS954 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD
NSN5340-00-071-9233
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: 43866 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
LENGTH: 1.312 INCHES NOMINAL IN
•
END STYLE: SPLIT LOOP
•
LOOP RADIUS: 0.125 INCHES NOMINAL IN
•
BASIC SHAPE STYLE: FLAT
•
THREAD SIZE: 1/4-28
•
WIDTH: 0.875 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
LENGTH1.312 INCHES NOMINAL IN
END STYLESPLIT LOOP
END STYLEEXTENDED TONGUE W/T-BOLT
LOOP RADIUS0.125 INCHES NOMINAL IN
BASIC SHAPE STYLEFLAT
THREAD SIZE1/4-28
SPECIAL FEATURESADDITIONAL BAND WITH TRUNION END REQUIRED
WIDTH0.875 INCHES NOMINAL IN
MATERIALSTEEL CORROSION RESISTING
SLOT WIDTH0.281 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 2
7766720Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
4088ABSame NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 43866?
43866 is a GEAR,HELICAL.
What parts can replace 43866?
There are 2 known substitutes for 43866: 7766720, 4088AB. Substitute compatibility should be verified for your specific system.
What is the NSN for 43866?
43866 is cataloged in the U.S. Government catalog under NSN 5340-00-071-9233. This indicates validated use in U.S. government and defense supply chains.
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