PartsTable
Technical Data Sheet
56494-031IN THK ✓ Verified by PartsTable
· NUT WASHER
WHAT YOU NEED TO KNOW
Match nut grade to bolt grade for full strength Lock nuts prevent loosening under vibration
Don't mix grades — weakens the joint
PRODUCT OVERVIEW

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include material: NICKEL OR NICKEL ALLOY 400 OVERALL, thickness: 0.031 INCHES NOMINAL IN, hole_diameter: 1.280 INCHES NOMINAL IN, overall_diameter: 2.250 INCHES NOMINAL IN, peripheral_shape_style: ROUND, center_hole_shape_style: ROUND. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-00-571-9709, 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
56494-031IN THK
NSN: 5310-00-571-9709
FSC: 5310
CAGE: 96046 — CRANE PUMPS & SYSTEMS PFT CORP DIV CRANE PUMPS & SYSTEM PFT CORP. (USA)
SPECIFICATIONS
materialNICKEL OR NICKEL ALLOY 400 OVERALL
thickness0.031 INCHES NOMINAL IN
hole_diameter1.280 INCHES NOMINAL IN
overall_diameter2.250 INCHES NOMINAL IN
peripheral_shape_styleROUND
center_hole_shape_styleROUND
cross-sectional_shape_styleRECTANGULAR
material_document_and_classificationASTM B164 ASSN STD ALL MATERIAL RESPONSES OR QQ-N-281 ASSN STD 1ST MATERIAL RESPONSE OVERALL
NSN5310-00-571-9709
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 56494-031IN THK · 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
THICKNESS: 0.031 INCHES NOMINAL IN
MATERIAL: NICKEL OR NICKEL ALLOY 400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM B164 ASSN STD ALL MATERIAL RESPONSES OR QQ-N-281 ASSN STD 1ST MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLE: ROUND
HOLE DIAMETER: 1.280 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLE: ROUND
CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
OVERALL DIAMETER: 2.250 INCHES NOMINAL IN
TECHNICAL CHARACTERISTICS (FLIS)
THICKNESS0.031 INCHES NOMINAL IN
MATERIALNICKEL OR NICKEL ALLOY 400 OVERALL
MATERIAL DOCUMENT AND CLASSIFICATIONASTM B164 ASSN STD ALL MATERIAL RESPONSES OR QQ-N-281 ASSN STD 1ST MATERIAL RESPONSE OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER1.280 INCHES NOMINAL IN
PERIPHERAL SHAPE STYLEROUND
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
OVERALL DIAMETER2.250 INCHES NOMINAL IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 12
B56494Interchangeable
interchangeable cross-reference
interchangeable
293858PC1Interchangeable
interchangeable cross-reference
interchangeable
56494Interchangeable
interchangeable cross-reference
interchangeable
8617628Interchangeable
interchangeable cross-reference
interchangeable
56495-2Interchangeable
interchangeable cross-reference
interchangeable
40334-24Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 56494-031IN THK?
56494-031IN THK is a WASHER,FLAT.
What parts can replace 56494-031IN THK?
There are 12 known substitutes for 56494-031IN THK: B56494, 293858PC1, 56494 and 9 more. Substitute compatibility should be verified for your specific system.
Is 56494-031IN THK still available?
56494-031IN THK is currently cancelled.
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