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2578201 — TENSIONER PULLEY ASSEMBLY

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

2578201: TENSIONER PULLEY ASSEMBLY.

The TENSIONER PULLEY ASSEMBLY is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, hole_diameter: 1.267 INCHES NOMINAL IN, outside_diameter: 2.616 INCHES NOMINAL IN, material_thickness: 0.120 INCHES NOMINAL IN, wire_hole_diameter: 0.272 INCHES NOMINAL IN, internal_straight_key_width: 0.248 INCHES NOMINAL IN. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-006-2176, 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
2578201
NSN: 5310-00-006-2176
NIINs: 000062176, 016769094
FSC: 5310 — Nuts and Washers
CAGE: 45934 — ONTIC ENGINEERING & MANUFACTURING, INC DBA ONTIC US (USA)
SPECIFICATIONS
materialSTEEL OVERALL
hole_diameter1.267 INCHES NOMINAL IN
outside_diameter2.616 INCHES NOMINAL IN
material_thickness0.120 INCHES NOMINAL IN
wire_hole_diameter0.272 INCHES NOMINAL IN
internal_key_quantity1
internal_straight_key_width0.248 INCHES NOMINAL IN
NSN5310-00-006-2176
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 2578201 · OEM ⚠ 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
•
INTERNAL STRAIGHT KEY WIDTH: 0.248 INCHES NOMINAL IN
•
WIRE HOLE DIAMETER: 0.272 INCHES NOMINAL IN
•
OUTSIDE DIAMETER: 2.616 INCHES NOMINAL IN
•
MATERIAL THICKNESS: 0.120 INCHES NOMINAL IN
•
MATERIAL: STEEL OVERALL
•
INTERNAL KEY QUANTITY: 1
•
HOLE DIAMETER: 1.267 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS
INTERNAL STRAIGHT KEY WIDTH0.248 INCHES NOMINAL IN
WIRE HOLE DIAMETER0.272 INCHES NOMINAL IN
OUTSIDE DIAMETER2.616 INCHES NOMINAL IN
MATERIAL THICKNESS0.120 INCHES NOMINAL IN
MATERIALSTEEL OVERALL
INTERNAL KEY QUANTITY1
HOLE DIAMETER1.267 INCHES NOMINAL IN
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 2578201?
2578201 is a TENSIONER PULLEY ASSEMBLY.
What is the NSN for 2578201?
2578201 is cataloged in the U.S. Government catalog under NSN 5310-00-006-2176. 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.