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90603 — PUSH ROD,ENGINE POPPET VALVE

✓ Government record, cited
Trefl · NUT WASHER
PRODUCT OVERVIEW

90603: PUSH ROD,ENGINE POPPET VALVE.

The PUSH ROD,ENGINE POPPET VALVE is a Trefl industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 0.515 INCHES NOMINAL IN, outside_diameter: 0.859 INCHES NOMINAL IN, style_designator: SPLIT HELICAL-RIGHT HAND, surface_treatment: CADMIUM OR ZINC OVERALL, material_thickness: 0.125 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-641-9297, 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
90603
NSN: 5310-00-641-9297
NIINs: 006419297, 013033279, 013433563
FSC: 5310 — Nuts and Washers
CAGE: 08645 — BRIGGS AND STRATTON CORP (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter0.515 INCHES NOMINAL IN
outside_diameter0.859 INCHES NOMINAL IN
style_designatorSPLIT HELICAL-RIGHT HAND
surface_treatmentCADMIUM OR ZINC OVERALL
material_thickness0.125 INCHES NOMINAL IN
NSN5310-00-641-9297
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 90603 · Trefl ⚠ VERIFY BEFORE ORDERING Grade matters for torque spec — don't mix grades. A Grade 5 nut on a Grade 8 bolt weakens the joint. Lock nuts, wing nuts, and castle nuts are NOT interchangeable with standard hex ✓ BROKER TIP Match nut to bolt thread class and material. Stainless bolt + zinc nut = galvanic corrosion. Always verify finish matches (plain, zinc, hot-dip galvanized) PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
STYLE DESIGNATOR: SPLIT HELICAL-RIGHT HAND
•
OUTSIDE DIAMETER: 0.859 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.125 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM OR ZINC OVERALL
•
MATERIAL: STEEL OVERALL
•
HOLE DIAMETER: 0.515 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
STYLE DESIGNATORSPLIT HELICAL-RIGHT HAND
OUTSIDE DIAMETER0.859 INCHES NOMINAL IN
MATERIAL THICKNESS0.125 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM OR ZINC OVERALL
MATERIALSTEEL OVERALL
HOLE DIAMETER0.515 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES 1
FF-W-84Reference document
Same NSN cross-reference
Reference document — Identification 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 90603?
90603 is a PUSH ROD,ENGINE POPPET VALVE manufactured by Trefl.
What parts can replace 90603?
There is 1 known substitute for 90603: FF-W-84. Substitute compatibility should be verified for your specific system.
What is the NSN for 90603?
90603 is cataloged in the U.S. Government catalog under NSN 5310-00-641-9297. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.