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56490 — ARRESTER,ELECTRICAL SURGE

✓ Government record, cited
— · MRO · MRO_GENERAL
PRODUCT OVERVIEW

56490: ARRESTER,ELECTRICAL SURGE.

The ARRESTER,ELECTRICAL SURGE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, usage_design: INDOOR, overall_diameter: 2.000 INCHES NOMINAL IN, special_features: MFG NAME: CURRENT PROTECTOR, peripheral_shape_style: ROUND, end_item_identification: STEAMER/OVEN MDL COS5HD. This part is cataloged in the U.S.

Government catalog under NSN 5310-01-074-2099, 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
MRO→ MRO_GENERAL→ 56490
NSN: 5310-01-074-2099
NIINs: 010742099, 015330589
FSC: 5310 — Nuts and Washers
CAGE: 96046 — CRANE PUMPS & SYSTEMS PFT CORP DIV CRANE PUMPS & SYSTEM PFT CORP. (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
usage_designINDOOR
overall_diameter2.000 INCHES NOMINAL IN
special_featuresMFG NAME: CURRENT PROTECTOR
peripheral_shape_styleROUND
end_item_identificationSTEAMER/OVEN MDL COS5HD
material_document_and_classificationQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
NSN5310-01-074-2099
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 56490 · 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
•
OVERALL DIAMETER: 2.000 INCHES NOMINAL IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
•
PERIPHERAL SHAPE STYLE: ROUND
•
MATERIAL: NICKEL ALLOY OVERALL
TECHNICAL CHARACTERISTICS
OVERALL DIAMETER2.000 INCHES NOMINAL IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-N-281 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALNICKEL ALLOY OVERALL
SUBSTITUTES & CROSS-REFERENCES 3
56466ITEM23Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
056490Reference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
5310PL1258400Reference document
Same NSN cross-reference
Reference document — Informative reference only
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 56490?
56490 is a ARRESTER,ELECTRICAL SURGE. It is classified as a MRO (MRO_GENERAL).
What parts can replace 56490?
There are 3 known substitutes for 56490: 56466ITEM23, 056490, 5310PL1258400. Substitute compatibility should be verified for your specific system.
What is the NSN for 56490?
56490 is cataloged in the U.S. Government catalog under NSN 5310-01-074-2099. 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.