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63B52570-7 — WASHER,FLAT

✓ Government record, cited
— · NUT WASHER
PRODUCT OVERVIEW

63B52570-7: WASHER,FLAT.

The WASHER,FLAT is a the manufacturer industrial component. Key specifications include part_name_assigned_by_controlling_agency: WASHER. This part is cataloged in the U.S.

Government catalog under NSN 5310-00-680-5647, 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
63B52570-7
NSN: 5310-00-680-5647
NIINs: 006805647, 016820459
FSC: 5310 — Nuts and Washers
CAGE: 98296 — STANDARD MFG CO INC (USA)
SPECIFICATIONS
part_name_assigned_by_controlling_agencyWASHER
NSN5310-00-680-5647
COMPONENT DIAGRAM
NUT & WASHER — GRADE MATCHING REQUIRED Hex NUT CROSS-SECTION WASHER OD: — SIZE: — MATERIAL: — PN: 63B52570-7 · 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
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SURFACE FINISH: 63.0 MICROINCHES INNER
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SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: QQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
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OVERALL DIAMETER: 1.373 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN
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MATERIAL DOCUMENT AND CLASSIFICATION: AISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
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CROSS-SECTIONAL SHAPE STYLE: RECTANGULAR
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SURFACE TREATMENT: CADMIUM OVERALL
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PERIPHERAL SHAPE STYLE: ROUND
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MATERIAL: STEEL COMP 1213 OVERALL
TECHNICAL CHARACTERISTICS
SURFACE FINISH63.0 MICROINCHES INNER
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONQQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL
OVERALL DIAMETER1.373 INCHES MINIMUM AND 1.377 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONAISI ASSN STD SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLERECTANGULAR
SURFACE TREATMENTCADMIUM OVERALL
PERIPHERAL SHAPE STYLEROUND
MATERIALSTEEL COMP 1213 OVERALL
CENTER HOLE SHAPE STYLEROUND
HOLE DIAMETER0.875 INCHES MINIMUM AND 0.877 INCHES MAXIMUM IN
SUBSTITUTES & CROSS-REFERENCES 1
56A23568Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
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 63B52570-7?
63B52570-7 is a WASHER,FLAT.
What parts can replace 63B52570-7?
There is 1 known substitute for 63B52570-7: 56A23568. Substitute compatibility should be verified for your specific system.
What is the NSN for 63B52570-7?
63B52570-7 is cataloged in the U.S. Government catalog under NSN 5310-00-680-5647. 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.