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H21-144 — GEAR,SPUR

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

H21-144: GEAR,SPUR.

The GEAR,SPUR is a the manufacturer industrial component. Key specifications include material: STEEL COMP 303 OVERALL, body_style: PLAIN, SOLID, bore_style: PLAIN BOTH ENDS, tooth_form: STANDARD, pitch_diameter: 3.0000 INCHES NOMINAL IN, pressure_angle: 20.0000 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 5330-00-986-1785, 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
H21-144
NSN: 5330-00-986-1785
NIINs: 009861785, 011078277
FSC: 5330 — Packing and Gasket Materials
CAGE: 23926 — KOMATSU AMERICA CORPORATION (USA)
SPECIFICATIONS
materialSTEEL COMP 303 OVERALL
body_stylePLAIN, SOLID
bore_stylePLAIN BOTH ENDS
tooth_formSTANDARD
pitch_diameter3.0000 INCHES NOMINAL IN
pressure_angle20.0000 DEGREES
teeth_quantity144
style_designatorPROTRUDING HUB
surface_treatmentPASSIVATE OVERALL
face_nominal_width0.125 INCHES IN
hub_nominal_diameter0.500 INCHES FIRST END IN
hub_style_designatorPINNED FIRST END
NSN5330-00-986-1785
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: H21-144 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
SUBSTITUTES & CROSS-REFERENCES 1
1KE6288Reference document
Same NSN cross-reference
Reference document — Secondary reference
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 H21-144?
H21-144 is a GEAR,SPUR.
What parts can replace H21-144?
There is 1 known substitute for H21-144: 1KE6288. Substitute compatibility should be verified for your specific system.
What is the NSN for H21-144?
H21-144 is cataloged in the U.S. Government catalog under NSN 5330-00-986-1785. This indicates validated use in U.S. government and defense supply chains.
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