PartsTable
Technical Data Sheet
645-A2 ✓ 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 NUT,PLAIN,WING is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, blade_shape: LIGHT CURVED AND TAPERED, overall_length: 8.000 INCHES NOMINAL IN, surface_treatment: PASSIVATE OVERALL, design_designation: METZENBAUM, part_name_assigned_by_controlling_agency: VASCULAR METZ SCISSORS CURVED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 5310-01-152-0594, 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
645-A2
NSN: 5310-01-152-0594
FSC: 5310
CAGE: 78940 — UNITED AIR FILTER, INC. (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
blade_shapeLIGHT CURVED AND TAPERED
overall_length8.000 INCHES NOMINAL IN
special_featuresDELICATE PATTERN; 20.3 CM LONG; BLADES ARE SLIGHTLY CURVED AND TAPERED TO A BLUNT POINT; HARDENED TO PRODUCE EFFICIENT SHEAR ACTION CM
surface_treatmentPASSIVATE OVERALL
design_designationMETZENBAUM
part_name_assigned_by_controlling_agencyVASCULAR METZ SCISSORS CURVED
NSN5310-01-152-0594
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 645-A2 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 3
35-2237Interchangeable
interchangeable cross-reference
interchangeable
645-A2Interchangeable
interchangeable cross-reference
interchangeable
0-645A2Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 645-A2?
645-A2 is a NUT,PLAIN,WING.
What parts can replace 645-A2?
There are 3 known substitutes for 645-A2: 35-2237, 645-A2, 0-645A2. Substitute compatibility should be verified for your specific system.
Is 645-A2 still available?
645-A2 is currently cancelled.
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